第一篇：情态动词语法讲稿及随堂练习
情态动词详解
情态动词
1.情态动词的推测表达 2.情态动词表达虚拟语气 3.某些情态动词的特殊用法
情态动词表达虚拟语气：表达“本来…”，“不然早就…”。这是情态动词的一种虚拟语气用法。表示说话人所讲的与所发生的事实相反。表达了说话人的埋怨，后悔的语气。其结构是在一些情态动词后面加 have done 结构。根据要表达的意思，有如下结构：
should have done / ought to have done：本应该…… shouldn’t have done / oughtn’t to have done：本不该…… could have done：本来可以…… needn’t have done：本来没必要…… would like to have done：本来很想…… would rather not have done: 本来不愿意…… could / might / have done: 不然早就
情态动词讲解与训练
高考重点要求：1．掌握情态动词的基本含义和用法，并能根据语境准确使用表达情感的情态动词。2．注意情态动词表示推测的语义差别。3．掌握情态动词后接不定式完成体的不同意义。
复习中需要注意的几点：1.情态动词表推测时语气的差异
肯定句中可用:must , may ,might,should etc.must语气最强 否定句式中可用can not , could not , may not ,might not , can not 语气最强，不可能
1、情态动词的完成式： ⑴ 情态动词的完成式即“情态动词+ have + v-ed分词”，表示对过去行为或动作进行推测、评论或判断。如：
Since the ditch is full of water, it must have rained last night.沟渠里的水都满了，想必昨晚一定下雨了。
You couldn’t have met my grandmother.She died before you were born.你不可能遇到我奶奶，因为她早在你出生前就死了。
I can’t find my keys.I may / might have left them at the school yesterday.我找不到钥匙了，也许昨天丢到学校了吧。
⑵ 当情态动词完成式是由ought to / should加完成式或否定式ought not to / shouldn’t加完成式时，是表示对已发生的情况表示“责备”、“不满”，分别表示“本应该…”和“本不应该…”。例如：
You ought not to make fun of him.He is not the one you laugh at but learn from.你本不应该取笑他的。他不是你嘲笑是热恰恰是你应该学习的一个人。
You should have finished your compositon by yesterday.你本应该昨天前就把作文写完的。
⑶ needn’t have v-ed needn’t have v-ed 表示过去做了某事，但没有做的必要，意为“本没必要…”。例如： You needn’t have wakened me up;I don’t have to go to work today.你本没必要把我叫醒，因为我今天不上班。注：表示推测过去某动作发生的可能性时，就表示的可能性程度而言，must最大，could其次，may更次之，might最小。must表示推测
1)must用在肯定句中表示较有把握的推测，意为“一定”。
2)must表对现在的状态或现在正发生的事情的推测时，must 后面通常接系动词be 的原形或行为动词的进行式。
You have worked hard all day.You must be tired.你辛苦干一整天，一定累了。（对现在情况的推测判断）
He must be working in his office.他一定在办公室工作呢。
比较：
He must be staying there.他现在肯定呆在那里。
He must stay there.他必须呆在那。
3)must 表示对已发生的事情的推测时，must 要接完成式。
I didn't hear the phone.I must have been asleep.我刚才没有听到电话，我想必是睡着了。
否定推测用can't。
If Tom didn't leave here until five o'clock, he can't be home yet.如果汤姆五点才离开这儿，他此时一定还未到家。
表示推测的用法
对不同时间段发生的事情的推测
对现在（一般现在）的推测
情态动词＋V原 对过去的推测
情态动词＋have + Vp.p 对现在进行的动作的推测
情态动词＋be + Ving
can, could, may, might, must 皆可表示推测，其用法如下：
1）情态动词+动词原形。
表示对现在或将来的情况的推测，此时动词通常为系动词。
I don't know where she is, she may be in Wuhan.2）情态动词+动词现在进行时。
表示对现在或将来正在进行的情况进行推测。
At this moment, our teacher must be correcting our exam papers.这时，我们老师想必在批改试卷。
3）情态动词+动词完成时。
表示对过去情况的推测。
We would have finished this work by the end of next December.明年十二月底前我们很可能已完成这项工作了。
The road is wet.It must have rained last night.地是湿的，昨天晚上一定下雨了。
4）情态动词+动词的现在完成进行时。
表示对过去正在发生事情的推测。
Your mother must have been looking for you.你妈妈一定一直在找你。
5）推测的否定形式，疑问形式用can't, couldn't表示。
Mike can't have found his car, for he came to work by bus this morning.迈克一定还没有找回他的车，因为早上他是坐公共汽车来上班的。
注意：could, might表示推测时不表示时态，其推测的程度不如can, may。
三、推测
1.表肯定推测的情态助动词按可能性从小到大排列：might, may, could, should, ought to, will, must;其中might, may, could表示“可能”，should, ought to表示“料想/按常理说应该”，will, must表示“肯定，一定”（must的推测把握最大，它表示没有其它的可能性了，肯定是某种情况；而will是一种主观感觉，并没有排除所有其它可能性）。
2.否定推测可能性从小到大排列为：might not, may not, should not / ought not to, won’t, couldn’t / can’t。其中might not / may not意思是 “可能不”，should not / ought not to意思是“料想/按常理不会 ”，won’t意思是“肯定不”，“ couldn’t / can’t”表示“不可能”。3.这些表事实推测的情态动词都可以表示对各种时间的事实推测，是哪种时间取决于情态助动词后面的主动词形式，分别表述于下：
1)情态助动词+do：对现在的一般情况或将来进行推测
That man smiled at you.He may know you.(= Maybe he knows you.)那个男的朝你笑了。他可能认识你。
Usually Lucy arrives very early, so she shouldn’t / oughtn’t to be late this time.(= It’s reasonable to assume that she won’t be late this time.)通常Lucy到得很早，所以她这次不应该会迟到。
2)情态助动词+ be doing： 对说话时的行为进行推测(但will be doing还可以表示对将来某个时候正发生的行为进行推测)It’s already midnight and all lights are off now.The students must be sleeping.(= There can’t be another possibility.)已经半夜了，所有的灯也都熄了。学生们肯定在睡觉。It’s already midnight.The students will be sleeping now.(对说话时的行为推测)(= I’m quite sure the students are sleeping now.)已经半夜了。学生们会是在睡觉。
Our airplane flies very fast.Perhaps we will be flying over the Pacific when we wake up tomorrow morning.(对将来某个时候正发生的行为进行推测)我们的飞机飞得很快。可能我们明天早晨醒来的时候会在飞越太平洋。
3)情态助动词+ have done：对发生过的动作行为进行推测
We can’t find Tom anywhere.He might / may / could have left town.(= Maybe he has left town.)我们到处都找不到Tom。他可能已经离开镇子了。
The girl in red must have been Lucy.She said she would wear a red blouse and no other girls were in red then.(= There can’t be another possibility.)那个穿红衣的女子一定是Lucy。她当时说她会穿一件红色的衬衫而且当时没有其他的女孩穿红色的衣服。4)情态助动词+have been doing: 对过去某时候正在发生的行为进行推测(也可以表示一直持续到现在的行为)I heard a lot of people singing.They may have been having a party.(=Maybe they were having a party.)我当时听到很多人唱歌。他们可能在聚会。
The girl doesn’t want to talk to his boyfriend.They must have been quarreling.(= I’m sure they have been quarreling.)这个女孩不想和她男朋友说话。他们肯定一直在吵架来着。▲注意：
1)mustn’t不能表示推测，而表示禁止；表示不可能是couldn’t / can’t；can只能在否定句（即“不可能”）和疑问句中（＂可能．．．．．．吗＂）表示推测。
2)can不能用于肯定句中表示对任何时间的事实进行推测(即不能用can do / can have done / can be doing / can have been doing表示对事实进行推测)，如不能说She can be Lucy.来表示“她可能是Lucy。”只能说“She could / may / might be Lucy.” Can可以用在否定句中和疑问句中表示对事实推测，can’t表示不可能，和couldn’t 同义，如前所述；用在一般疑问句中，如Can that be Tom?表示“可能......吗？”用在特殊疑问句中，如What can it be?” 表示“可能是什么/为什么/在哪儿............呢？”
3)但是can可以用在肯定句中，表示理论可能上的或泛泛而谈的可能性，可翻译为“(有时)可能”，它不是表示对具体事实的推测。如：
The temperature on the mountain top can be as low as minus 15 degress.山顶的气温有时可能低达零下15度。
The road is always busy.It can be blocked at any time.这条路总是很繁忙。随时都有可能堵上。对比：
It’s very cold now.It could /may / might be as low as minus 15 degrees.现在好冷。现在的气温可能低达零下15度。（对事实推测）
The traffic ahead is not moving.The road could / may / might be blocked now.前面的车没有动了。可能路堵上了。(对事实推测)
情态动词+ have +过去分词
1)may(might)have + done sth, can(could)have + done sth 表示过去，推测过去时间里可能发生的事情。
Philip may(might)have been hurt seriously in the car accident.Philip can(could)have been hurt seriously in the car accident.2)must have +done sth，对过去时间里可能发生的事情的推测，语气较强，具有“肯定”，“谅必”的意思。
---Linda has gone to work, but her bicycle is still here.---She must have gone by bus.3)ought to have done sth, should have done sth
本应该做某事，而事实上并没有做。否定句表示“不该做某事而做了”。
You ought to(should)have been more careful in this experiment.He ought not to have thrown the old clothes away.（事实上已扔了。）
ought to 在语气上比should 要强。
4)needn't have done sth
本没必要做某事
I dressed very warmly for the trip, but I needn't have done so.The weather was hot.5)would like to have done sth
本打算做某事
I would like to have read the article, but I was very busy then.情态动词中应特别注意的典的型结构
They must be in the library, aren’t they? 他们一定还在图书馆，对吧？
They must have gone to the library, haven’t they? 他们一定去图书馆了，对吧？ They must have been to the library yesterday, didn’t they? 他们昨天一定去了图书馆，是不是？ Let me do it, will you? 让我来做，好么？ Let me help you, may I? 请让我帮你，可以吗？ Don’t move, will you? 请你别动！Go quickly, can you? 你能不能快点？
Let’s go for a walk, shall we? 咱们去散步，好么？
He used to live in the countryside, didn’t/usedn’t he? 他过去住在农村，对吧？
情态动词，在英文中主要用来表示说话人的看法、态度等。它很接近中文里的能愿动词。从用法上来说，它有这样几个特点：
1）各个情态动词自身都有一定的词义。
2）情态动词不能在句中独立担当谓语。
3）情态动词在句中不受任何人称,性,数变化的影响。
4)情态动词后接的不定式（除ought外）都不带to，即接动词原形。
英文中的情态动词主要有：can , could;may , might;must;ought;need;dare , dared，另外，shall , will , should , would在一定的场合也可用作情态动词。例如：
He can speak five languages.他会说五种语言。
She must have arrived home by now.现在她准到家了。
We should study hard for our motherland.我们应该为祖国而努力学习。
They needn't be in such a hurry for there is enough time
for them.他们还有足够的时间，用不着这么慌张。
1.常用情态动词的基本用法
can , could 能，会
（could可以看作是can的过去式，这两个词除了时态不相同外，在表达意思的许多方面是相同的。当然could也有自己独特的用法。）表示成功地做了某事时，只能用was/were able to，不能用could。但是were / was able to的肯定形式也可以表示过去实现了的具体能力（即表示过去某个时候某人成功地做成某事），此时不能用could替代
He was able to flee Europe before the war broke out.= He managed to flee Europe before the war broke out Although the pilot was badly hurt, he was able to explain what had happened.尽管这个飞行员当时受了重伤，他还是将事情的经过解释清楚了（而不是“他有能力解释清楚”）。
1）表示脑力或体力上的能力
Nobody can stop the development of science.谁也无法阻止科学的发展。
She can sing that song in English.她能用英文唱那歌。
He can submerge to a depth of about twenty meters.他能潜入约二十米深的水中。
He could hardly support his family before he found the new job.他在找到那份新工作前几乎无 法养家。
I could not understand the lecture on the computer given by Mr.Smith.我听不懂史密斯先生作的那个关于计算机的讲座。2)表示可能（理论上或逻辑判断上）表示客观上的可能性
The temperature can fall to-60c, You mustn’t smoke while you’re walking around in the wood.You can start a fire.You can borrow this useful book from the library.你可以从图书馆借到这种有用的书。
A more suitable person than him for the job can not be found.不可能找到比他更适合这份工作的人了。
Now people can skate on the lake.现在人们可以在湖上滑冰了。
When the storm stopped , the plane could take off.当风暴停下来时，飞机可以起飞了不得。
3)表示主观上的允许
Can I ask you some questions about it ?
我可以问你有关这件事的几个问题吗？
You can not leave here till I come back.直到我回来你才能离开。
Such kind of thing can't happen any more later.这类事以后不准再发生了。
Can you tell me how to get to the airport ? 你能告诉我怎么去机场吗？
Could you tell me how to get to the airport ?
您能告诉我怎么去机场吗？
Could I be forgiven my negligence ? 请原谅我的疏忽，行吗？
4）（用于否定句、疑问句或感叹句中）表示猜测、怀疑或惊诧
How can / could you be here ? 你怎么会在这儿？
She couldn't / can't be so stupid to do that.她不可能蠢得去做那种事吧。
He couldn't / can't be over seventy.他不可能有七十多岁了。
Where could / can the boy be now ? 那孩子现在能在哪儿呢？
另外，could还常用于表示较客气委婉的看法、提问及用于虚拟语气的结构中。这时候，could就不可以看作是can的过去式了。而是could自己独特的用法。如：
Could you speak a little slowly ?
您能稍微说慢一点儿吗？
I'm afraid that we couldn't give you any definite answer at this moment.恐怕我们这时候还无法给予您任何确切的答复。
I could come earlier if asked.如果要让我早一点来，我可以来早一点。
We would appreciate it if you could offer us any help.如果您能为我们提供帮助的话，我们将不甚感激。
You could have done better if you had worked harder at it.如果你再加把劲，本来可以干得更好一些的。
（二）情态动词
情态动词表示说话人对某一动作或状态的态度，可以表示“可能”、“可以”、“需要”、“必须”或“应当”等之意。情态动词没有人称和数的变化。但不能单独作谓语动词用，必须和不带to的不定式连用构成谓语动词。只有情态动词ought要和带to的动词不定式连用，在句中作谓语用。
将情态动词置于主语之前即构成其疑问式，在情态动词之后加not既构成其否定式。现将各情态动词的基本用法分述如下：
1、can和could(could为can的过去式)的基本用法
(1)表示能力，如：He can speak English better than you.(2)在疑问句和否定句中表示“怀疑”、“猜测”或“可能性”，如：Can this green bike be Liu Dong's?(3)表示“许可”时can可以和may换用，如：You can(may)go home now.(4)如果要表示语气婉转，可用could代替can，这时could不再是can的过去式，如：Could you come again tomorrow?(5)can和be able to都可表示能力，两者在意思上没有什么区别。但是can只能有现在式和过去式，而be able to则有更多的形式，如：He will be able to do the work better.当表示“经过努力才得以做成功某事”时应用be able to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.2、may和might(might为may的过去式)的基本用法
may , might 或许，可能，可以
（might可以看作是may的过去式，这两个词除了时态不相同外，在表达意思的许多方面是相近的。当然may 和might又都有一些各自不同的独特用法。）
成语： may/might as well，后面接不带to 的不定式，意为“不妨”。
If that is the case, we may as well try.表示希望、祈求、祝愿，常可译为祝愿。如： May you have a good time.祝你过得愉快。May you be happy！祝你幸福！
(1)表示允许或征询对方许可，有“可以”之意，如：You may use my dictionary.在回答对方说“可以做某事”或“不可以做某事”时，一般多不用may或 may not，以避免语气生硬或不容气。而用比较婉转的说法进行回答。如：----May I use this dictionary?----Yes, please.或----Certainly.在请求对方许可时，如果Might I…? 就比用May I…? 语气更婉转些，如：May I have a look at your new computer? 但是表示“阻止”或“禁止”对方做某事时，要用must not代替may not，如：----May we swim in this lake?----No, you mustn’t.It’s too dangerous.(2)may或 might都可以表示可能性，表示“或许”、“可能”之意，如果用might表示可能性，则语气更加不肯定，如：They may(might)be in the library now.3、must的基本用法
(1)must表示“必须”、“应该”之意，其否定式 must not，缩写形式为 mustn't，表示“不应该”，“不准”、“不许可”或“禁止”之意，如：We must study hard and make progress every day.You mustn't touch the fire.(2)对以must提出的疑问句，如作否定回答时，要用needn't或用don't(doesn't)have to(不
必)来回答，而不用mustn't，因为mustn't表示的是“禁止”或“不许可”之意，如：----Must we finish the work tomorrow?----No, you needn't(don't have to), but you must finish it in three days.(3)在肯定句中must可以表示推测，表示“一定”或“必定”之意，如：----Whose new bike can it be?----It must be Liu Dong's.I know his father has just bought him a new one.4、can, could, may, must后接完成式的用法
(1)can, could后接完成式的用法：①在否定句或疑问句中表示对过去发生过的事情的“怀疑”或“不肯定”的态度，Could he have said so? ②在肯定句中，可以表示过去可能做到而实际并没做到的事情，有“劝告”或“责备”的语气。如：----When did you answer her letter?----Only yesterday.----It's too late.You could have answered it earlier, I am sure.(2)may, might后接完成式的用法
①表示对过去某事的推测，认为某一件事情在过去可能发生了。如果使用might，语气就比较婉转或更加不肯定，如：Mary might have learned some Chinese before.②可以表示过去本来可以做到而实
际没有做到的事情，有“劝告”或“责备”的语气，如：You didn't do the work well that day.You might have done it better.(3)must后接完成式的用法：表示对过去某事的推测，认为某事在过去一定做到
了，如：Liu Dong isn’t in the classroom.He must have gone to the library.5、have to 的基本用法：have to和must的意义相近，只是 must侧重表示说话人的主观看法，而have to 则表示客观需要注意：
在这种用法中，回答以must引导的问句时，若是否定答复，不可以用mustn't 而需要用needn't 或是don't have to，因为mustn't意思是“绝不能、一定不要”，而没有“不必”的意思。例如：
--Must we hand in our exercises today ? 我们今天必须交作业吗？--Yes , you must.是的，必须交。
--No , you needn't(or , you don't have to).不，不必今天交。
6、ought to的基本用法
(l)表示根据某种义务或必要“应当”做某事，语气比should强，例如：Everyone ought to obey the traffic regulations.(2)表示推测，注意与must表示推测时的区别：He must be home by now.(断定他已到家)，He ought to be home by now.(不十分肯定)，This is where the oil must be.(比较直率)，This is where the oil ought to be.(比较含蓄)；(3)“ought + have+ 过去分词”表示过去应做某事而
实际未做。例如：You ought to have helped him.(but you didn’t)这时，ought与 should可以互相换用。注意，在美国英语中ought to 用于否定和疑问句时to可以省略。例如：Ought you smoke so much? You oughtn’t smoke so much.7、dare的基本用法
(l)dare(dared为其过去式)作情态动词用时，主要用于否定句，疑问句和条件从句中，如：Dared he bread the traffic regulations again?(2)在现代英语中dare常用作行为动词，其变化与一般行为动词相同，如：She dares to stay at home alone at night.8、need的基本用法
(1)need作情态动词用时，主要用于否定句和疑问句中，如：He needn't worry about us now.(2)need也可作为行为动词用，可用于肯定句，否定句和疑问句中，其后可接名词、代词、动名词或带 to 的动词不定式为其宾语。(3)needn't后接完成式可以表示过去做了一件本来不必要做的事情
9、shall的基本用法
(1)shall用作情态动词时，用于第二、三人称，表示说活人的意愿，可表示“命令”、“警告”、“强制”、“威胁”或“允诺”等意，如：He shall go first, whether he wants to or not.(2)在疑问句中，shall用于第一、三人称，表示说话人的征询对方意见或请求指示，Shall用于第一人称和第三人称的疑问句中是向听话人征求意见或命令;用于第二，三人称的陈述句是表示说话人(并非主语)的意志或愿意，含命令，许诺，威胁等含义。Example dialogues: ① Martin: Shall I bring my pen to the meeting tomorrow, sir? = Do you want me to… 我要不要明天把笔带来开会，老师？
Teacher: Yes, you shall.And you shall tell other students to do the same and that they shan’t be late.= I demand that you tell… and that they shouldn’t be late.要。你还要告诉其他学生要带笔，还有他们不能迟到。
10、should的基本用法
用于表示“建议、命令、要求、主张、指示”类含义的名词性从句中的谓语部分should do,但should可以省略；
6)用在虚拟语气句子中，表示发生的可能性不大，但也并非全无可能性，可译为“万一”，如：If it should rain, buy an umbrella.= Should it rain, buy… 万一下雨就买一把伞。Stay at home in case he should come to visit you.呆在家里以防万一他来访。
7）还可以表示兴奋或吃惊，可译为“竟然”，如: Guess who that man is.He should be my favorite actor.猜猜那个男的是谁。他竟然是我最喜爱的演员。
It’s amazing that she should be the only student who has won the award.她竟然是唯一赢得这个奖的学生，真是神了。
(1)should作为情态动词可以表示“建议”或“劝告”，有“应该”之意，如：You should learn from each other.(2)should后接完成式表示过去没有做到本来应该做的事情，或是做了本来不应该做的事情。
Should 表推测，想必一定，照说应该、估计。竟然
They should be home by now.11、will的基本用法
(1)表意愿，用于各人称陈述句，可以表示“意志”或“决心”，如：I have told him again and again to stop smoking, but he will not listen.If you will read the book, I will lend it to you.(2)在疑问句中用于第二人称，表示说话人向对方提出请求或询问对方的意愿，如：Will you please tell me how to get to the Capital Gymnasium?(3)will表示某种倾向或习惯性动作，可以表示一种习惯性的动作，有“总是”或“会要”之意 Fish will die out of water.The door won’t open.would表示过去反复发生的动作或过去的一种倾向。Used to 表示过去的习惯动作或状态，现在不复发生或存在，疑问式和否定式有两种。
Every time she was in trouble, she would go to him for help.shall 用作情态动词时,适用于第二人称和第三人称。主要表示下面几层意思： 1）许诺
You shall hear everything directly you come.你一来就可以听到一切了。“Whatever you want you shall have , ”said the Fairy.仙女说：“你想得到什么，你就可以有什么。” I don't want to be hard on your daughter;she shan't be pressed.我不想对你女儿太严厉，她不会太受压的。
I promise that you shall see her again before long.我保证你不久就能再见到她。2）命令
You shall come to my office immediately.你必须马上来我的办公室。She shall not stay in my garden.她不可以呆在我的花园里。He shall not come into my study.不许他进我的书房。You shall do as you are told.按告诉你的那么做。3）决心（表示某事一定会发生）
That day shall come.那一天一定会到来。
It has been decided that he shall be given the job.肯定给他那份工作的事已经定下来了。
This law shall come into effect on January 1st 2001 这个法律于2001年元月1日生效。4）规定
Each competitor shall wear a number.每个参赛者要佩戴一个数字标。The renter shall keep the house in a neat and orderly state.租赁者要保持房屋整洁有序。
The supplier shall make shipment before October and the purchaser shall make payment within 15 days after receipt of the goods.卖方十月以前装运，买方在收到货物后十五天内付款。
should（用作情态动词时，有时表示具体的意思，有时却没有意义。主要用于下面几个方面。）1）表示出于职责、义务该做某事
You shouldn't come to such a decision hastily.你不应该匆匆忙忙地作出这么一个决定。
You should write to your parents at least once a month.你应该至少每月给你父母亲写一封信。
We should read English aloud every morning.我们应该每天早晨朗读英文。
They should do it for their own good.为了他们自己利益他们应该做这件事。2）表示对某种情况的估计
She shouldn't be out in such an early morning.她不会这么一大早就出去了吧。
The effect of the tax should be felt in higher prices.人们可能会从各种上涨的物价中感觉到这种税的影响的。
The event should lead them to a even worse economic crisis.这次事件可能会将他们引向更严重的经济危机。
This book should be published in two months at most.这本书最多两个月后就会出版的。3）表示惊讶、失望等情绪
I think it is dreadful that anyone should be so miserable.我认为，竟然每个人都如此伤心就太糟糕了。
Why should I pay him for nothing ? 我干吗要无为地付给他钱？ It seems so unfair that this should happen to me.这件事竟然发生在我身上似乎太不公平了。
It's strange that it should be so cold today.奇怪，今天怎么会这么冷。4）用于某些从句中表示虚拟语气
The doctor insisted that the girl should be hospitalized.大夫坚持认为那个女孩要住院治疗。
If it had not been for the doctor's care the girl should not be speaking to you now.要不是由于大夫的精心照料，这个女孩现在就不能与你说话了。She stood away so that he should enter the room first.她让到一边，好让他第一个进入房间。
I'll write it down lest I should forget it 我将它记下以免遗忘。Take an umbrella with you in case it should rain.带上雨伞，以防万一下雨。用于表示一种惊讶的语气，should的这一用法也是考试中常常出现的考点之一：
例：It is unthinkable that a strong character like Nancy should find a weak-willed man acceptable.（象南希这样很有主见的女子竟然觉得一个意志软弱的男子也可以接受，真让人不可想象。）
I was shocked that she should have said such a thing to you.（她竟然对你说这种话，真让我吃惊。）
will , would（would可以看作是will的过去式，这两个词除了时态不相同外，在表达意思的许多方面是相近的。当然will 和would又都有一些各自不同的独特用法。）
1）用于第二人称疑问句，表示请求（在这种用法中would使语气更为客气、委婉）Will you tell her that I'll be back in twenty minutes ? 请告诉她我二十分钟后回来，好吗？
If you want help, just let me know , will you ? 你需要帮助就告诉我，好吗？
Won't you come in and have a little whisky ? 你要不要进来喝一点儿威士忌？（或是：你进来喝一点儿威士忌，好吗？）Would you tell me how to get to the shopping center ? 您能告诉我怎么去购物中心吗？ 2）用于表示愿望
Go where you will.去你想去的地方吧。
I will pay you at the rate you ask.我会按你要的利率付给你钱的。
He wouldn't let the doctor take his blood pressure.他不愿意让大夫给他量血压。They had to obey whether they would or not.他们不得不遵从他们的意愿。3）表示习惯、倾向（可译成“总是会、老是，等”）Sometimes the cat will lie there all afternoon.有时侯，那只猫总是整个下午都躺在那儿。Oil and water will not mix.油和水决不能调和。He would sit there for hours, doing nothing at all.他总是在那儿一坐就是几个小时，什么都不干。4）表示猜测（可译成“一定是……、想必……，等”）
This will be the house you're looking for.这想必就是你要找的房子吧。He will have gone back to New Zealand.他一定是回新西兰去了。The person you mentioned would be the father , is that right ? 你说的那个人一定是爸爸了，对吗？
That would be in 1999 , I think.那大概是在1999年吧。5）will用于表示决心（可译成“一定要,决心，等”）We will never talk about that subject again.我们决不会再谈论这个话题了。
I will make this computer work even if I have to stay up all night.我即使整晚不睡觉也一定要让这台计算机工作起来。
6）would常用于虚拟条件句，表示与事实相反或不太可能实现的情况
But for your help we would have been late.要不是你帮忙我们就迟到了。Well, I wouldn't worry about it.It won't do me any good.好了，我不会担心那件事的，因为它不会给我带来什么好处。
表示猜测、推测must常用于肯定句中表示猜测。对现在或未来的事进行猜测时，后接动词原形；对已经发生的事进行猜测时，后接have + 过去分词。例如：
You must be tired after working so long.你工作这么久以后，肯定累了吧。It must be that naughty boy crying outside.肯定是那个调皮的孩子在外面大叫。The idea must be accepted by the society sooner or later.这种想法肯定或迟或早会被社会所接受的。
It must have rained last night for it is so wet outside.外面这么湿，昨晚肯定下雨了。
I didn't see you in class yesterday.You must have been absent.我昨天上课没见着你，你肯定没有来。
情态动词详解
关键字： 师生交流 作者：林建华 更新时间：2008-12-20 08:42:00
一、情态动词的定义
情态动词是一种本身有一定的词义，表示说话人的情绪、态度或语气的动词，但不能单独作谓语，只能和其他动词原形构成谓语。
We can be there on time tomorrow.我们明天能按时去那儿。
May I have your name? 我能知道你的名字吗？
Shall we begin now? 我们现在就开始吗？
You must obey the school rules.你必须遵守校规。
情态动词数量不多，但用途广泛，主要有下列： can(could), may(might), must, need, ought to, dare(dared), shall(should), will(would).二、情态动词的位置
情态动词在句中放在谓语动词之前，谓语动词前若有助动词，则在助动词之前，疑问句中，情态动词放在主语之前。
I can see you.Come here.我能看见你，过来吧。
He must have been away.他一定走了。What can I do for you? 你要什么？
How dare you treat us like that!你怎么敢那样对待我们
三、情态动词的特点
情态动词无人称和数的变化，情态动词后面跟的动词需用原形，否定式构成是在情态动词后面加“not”。个别情态动词有现在式和过去式两种形式，过去式可以用来表达更加客气、委婉的语气，时态性不强，可用于过去，现在或将来。
He could be here soon.他很快就来。
We can't carry the heavy box.我们搬不动那箱子。
I'm sorry I can't help you.对不起，我帮不上你。
四、情态动词的用法
1.can(could)表示说话人能, 可以, 同意, 准许, 以及客观条件许可, could 为
can 的过去式。
Can you pass me the books? 你能给我递一下书吗 ? Could you help me, please? 请问, 你能帮助我吗? What can you do? 你能干点什么呢? Can you be sure? 你有把握吗?
can 和could 只能用于现在式和过去式两种时态，将来时态用be able to 来表示。
He could help us at all.他完全可以帮助我们。With the teacher‟s help, I shall be able to speak English correctly.有老师的帮助, 我将能准确地讲英语。
2.may(might)“可以”，表示说话人同意，许可或请求对方许可。
You may take the book home.你可以把书带回家去。
May I come in? 我可以进来吗?
May I use your dictionary? 我可以用你的词典吗? You may put on more clothes.你可以多穿点衣服。
He said he might lend us some money.他说他可以借给我们一些钱。
may 否定式为 may not, 缩写形式是 mayn‟t。might 是may 的过去式，有两种用法，一种表示过去式，一种表示虚拟语气，使语气更加委婉、客气或对可能性的怀疑。
He told me he might be here on time.他说他能按时间来。
Might I borrow some money now? 我可以借点钱吗? He might be alive.他可能还活着。
3.must “必须；应该；一定；准是”，表示说话人认为有必要做某事，命令、要求别人做某事以及对事物的推测。must 用来指一般现在时和一般将来时，过去式可用 have to 的过去式代替。
I must finish my work today.我今天必须完成我的工作。
You mustn't work all the time.你不能老是工作。
Must I return the book tomorrow? 我必须明天还书吗?
After such a long walk, you must be tired.走了这么长的路, 你一定累了。He must be the man I am looking for.他一定是我要找的人。
He had to go because of somebody‟s calling him that day.那天他要走，因为有人叫他。
值得注意的是：
（1）must + have + 过去分词，表示现在对过去事物的推测。
He must have told my parents about it.他一定把这件事情告诉我父母亲了。
He must have received my letter now.他现在一定收到我的信了。
It's six o'clock already, we must have been late again.已经六点钟了，我们一定又迟到了。
（2）must 和 have to 的区别: must 表示说话人的主观思想, have to “不得不,必须”，表示客观需要、客观条件只能如此。
You must do it now.你必需现在就干。(说话人认为必须现在干)
I have to go now.我得走了。(客观条件必须现在走)
You must be here on time next time.你下次一定要按时来。
I have to cook for my child.我得给孩子做饭。
4.need “需要”，多用在否定式或疑问句中.Need I attend the meeting tomorrow? 我需要明天参加会议吗? You need not hand in the paper this week.这一周你不必交论文。
need 是一个情态动词，他的用法完全和其他情态动词一样，但 need 还可当作实义动词使用，这时 need 就象其他动词一样，有第三人称，单复数，后面加带 to 的动词等特性。
I need a bike to go to school.我上学需要一辆自行车。
Do you need a dictionary? 你需要词典吗? She needs a necklace.她需要一条项链。
注意：“needn„t + have + 过去分词” 表示过去做了没必要做的事情。
You needn't have taken it seriously.这件事情你不必太认真。
5.dare “敢”，多用在否定或疑问句中。
The little girl dare not speak in public.小女孩不敢在公众面前说话。
Dare you catch the little cat? 你敢抓小猫吗?
dare 除用作情态动词外，更多的是当实义动词使用，用法同实义动词一样，要考虑人称，单复数，时态等。
Do you dare to walk in the dark? 你敢黑夜走路吗？
He doesn't dare to tell the teacher what happened that day.他不敢告诉老师那天发生的事。
6.ought “应当；应该”，后面跟带有 to 的动词不定式。
You ought to read these books if you want to know how to repair the motorcar.如果你想知道如何修理汽车,你应该读这些书。
You ought to bring the child here.你应该把孩子带来。7.will(would)表决心、愿望。would 为 will 的过去式, 可用于各人称。
I'll do my best to catch up with them.我要尽全力赶上他们。
I'll never do it again, that's the last time.我再不会做那件事情了,这是最后一次。
He said he would help me.他说他会帮助我。
will, would用于疑问句表示说话人向对方提出请求或询问,用 would 比 will 更婉转,客气。
It's hot.Will you open the windows? 天气太热了,你能打开窗户吗? Will you help me to work it out? 你能帮我解这道题吗? Would you like some coffee？ 给你来点咖啡怎样？
8.shall, should 表示命令, 警告, 允诺, 征求, 劝告, 建议, 惊奇。
You should hand in the exercise book.你应该交作业本儿了。
This should be no problem.这应该没问题。
Shall we go now? 我们现在可以走了吗? Why should I meet him？ 为什么我要见他?
四．练习
1.A computer ____ think for itself;it must be told what to do.A.can’t
B.couldn’t
C.may not
D.might not
2.---Could I borrow your dictionary?---Yes, of course you
.A.might
B.will
C.can
D.should
3.---There were already five people in the car but they managed to take me as well.---It _____ a comfortable journey.A.can’t be
B.shouldn’t be
C.mustn’t have been D.couldn’t have been 4.The fire spread through the hotel very quickly but everyone_____ get out.A.had to
B.would
C.could
D.was able to
5.---I heard they went skiing in the mountains last winter.---It _______ true because there was little snow there.A.may not be B.won’t be
C.couldn’t be
D.mustn’t be
6.I didn’t hear the phone.I _____ asleep.A.must be
B.must have been C.should be
D.should have been
7.---Could I call you by your first name?
---Yes, you______.A.will
B.could
C.may
D.might
8.---Write to me when you get home.---_____.A.I must
B.I should
C.I will
D.I can 9.I told Sally how to get here, but perhaps I _____ for her.A.had to write it out
B.must have written it out C.should have written it out
D.ought to write it out 10.You ____ your tooth pulled out before it rots completely.A.had better got
B.had to get better C.had better to get D.had better get
11.The plant is dead.I ________ it more water.A.will give C.must give
B.would have given
D.should have given
B.to not be punished
D.not be punished 12.You ought ________ for what you are unable to do.A.not to be punished C.to not punished
13.You _____ get off the bus when it is still moving.A.needn’t
B.dare not
C.mustn’t
D.may not
14.If you live in a town, you _____ worry about parking.A.must not
B.may not
C.don’t have to
D.should not
15.Jenny looks worried.You _____ have told her the news.A.can’t
B.shouldn’t
C.mustn’t
D.may not 16.Mary _____ have been here by now.I wonder what’s happened to her.A.must
B.needn’t
C.ought to
D.can’t
…”。而不能使用mustn’t或must等词。
【典型例题】
1.—Do you think he will do me a favor ?
—As far as I know, he is the last one to help others.He _____ be prepared to give you a hand, though.A.might B.must C.can D.should 分析：本题考查情态动词推测性用法。根据he is the last one to help others.（他是最不可能帮助别人的人），既然如此，那么“帮助你”的可能性也就最小了。答案为A
2.—Look, someone is coming.Guess who it ____ be ?
—I think it ___ be Tom.—I don’t think it ___ be ____.A.can;must;can;he B.may;can;must;him
C.must;can;must;his D.might;must;can;himself
分析：根据备选答案。can表示推测时用于疑问句或否定句中。本题首句就应该是Guess who can it be? 第二句应该是I think it must be Tom.（说话人十分肯定）。第三句表达了说话人对前一个人的否定。即：I don’t think it can be him/he.（不可能是他）。答案为A
3.—Do you know Ms.Wang likes walking after supper ?
—Sure.She ____ around the campus now.A.must be walking B.must walk C.may walk D.may be walking
分析：关键词Sure告诉我们说话人的口气十分肯定。根据句子语境：她此刻肯定正在校园散步呢。must be doing表示肯定正在做。答案为A 4.—I stayed at a hotel in New York.—Oh, did you ? You _____ with Barbara.A.could have stayed B.could stay C.would say D.must have stayed 分析：首句说：我在纽约住在一家宾馆里。在此a hotel是泛指。所以D选项不合题意。第二句在说：你本来可以和Barbara.住在一起的。Could have done表示：本来可以。答案为A
5.Why didn’t you tell me there was no meeting today ? I _____ all the way here through the heavy snow.A.needn’t have driven B.can’t have driven C.mustn’t have driven D.shouldn’t have driven 分析：根据句意：你为什么不告诉我今天没有会？我本来没必要冒着大雪开车跑这么多路。Needn’t have done表示本来没必要。答案为A 6.I was really anxious about you.You _____ home without a word.A.mustn’t leave B.shouldn’t have left C.couldn’t have left D.needn’t leave
分析：根据句意：我真的很担心你，你真不应该一句话都不说就离开家。“离开家”已经发生了。Should have done正好表达了本句的意思。答案为B 7.A：Are you coming to Jeff’s party ?
B：I’m not sure.I _____ go to the concert instead.A.must B.would C.should D.might
分析：根据B的回答：我不一定去，我有可能去听音乐会。Might表示推测：可能。答案为D
8.A：I promise that she ____ get a nice present on her birthday.B：Will it be a big surprise to her ?
A.should B.must C.would D.shall
分析：A说：“我答应她在生日聚会上她会得到一份生日礼物。shall表示许诺。答案为D
【模拟试题】
1.A：Is John coming by train ?
B：He should, but he _____ not.He likes driving his car.A.must B.can C.need D.may 2.Mr.White _____ at 8:30 for the meeting, but he didn’t show up.A.should have arrived B.should arrive C.should have had arrived D.should be arriving 3.Sorry, I’m late.I _____ have turned off the alarm and gone to sleep again.A.might B.should C.can D.will
4.You _____ be tired—You’ve only been working for an hour.A.must not B.won’t C.can’t D.may not
5.—I didn’t go to work yesterday afternoon because my car broke down.—You _____ mine.I wasn’t using it.A.might borrow B.could have borrowed C.can have borrowed D.ought to borrow 6.—A man answered the phone.I suppose it was her husband.—It _____ her husband.He has been dead for ages.A.mustn’t be
B.couldn’t have been C.may not have been D.mustn’t have been
【试题答案】
1.分析：根据B的回答“他应该（坐火车来），但是也不一定，他喜欢开自己的车。本题考查了情态动词的推测用法。may表示不十分有把握的推测。答案为D 2.分析：根据句意：White先生本应该在8:30到这里出席会议的，可他（在8:30）没有到场。Should have done表示：本应该。答案为A
3.分析：本句是说话人在解释迟到的原因：我或许是关掉闹钟又睡了。might have done 表示对过去的推测：可能已经……答案为A
4.分析：根据后半句You’ve only been working for an hour.（你才刚干了一个小时）说明
You _____ be tired（你不可能很累），can’t 表示“不可能”答案为C 5.分析：听到对方说“昨天车坏了而没去上班”，第二个人说“你本来可以借我的车去
上班。” 本来可以/能：could have done.答案为B
6.分析：第二个人是说：那个人不可能是她丈夫，因为她丈夫已经去世多年了。根据对
话的语境，是在谈论过去的事，表示过去不可能：could not have done 答案为：B
第二篇：情态动词语法经典练习
情态动词语法经典练习：
1.He ______ you more help, even though he was very busy.A.might have givenB.might giveC.may have givenD.may give
2.Jenny______ have kept her word.I wonder why she changed her mind.A.mustB.shouldC.needD.would
3..-Could I borrow your dictionary?
-Yes, of course you_________
A.mightB.will C.canD.should
4.I told Sally how to get here, but perhaps I ______ for her.A.had to write it outB.must have written it out
C.should have written it outD.ought to write it out
5.—Shall I tell John about it?
—No, you ______.I've told him already.A.needn'tB.wouldn't
C.mustn'tD.shouldn't
6.─There were already five people in the car but they managed to take me as well.─ It______ a comfortable journey.A.can't beB.shouldn't be
C.mustn't have beenD.couldn't have been
7.It's nearly seven o'clock.Jack______ be here at any moment.A.mustB.needC.shouldD.can
8..When he was there, he______ go to that coffee shop at the corner after workevery day.A.wouldB.shouldC.had betterD.might
9..Sir, you _____ be sitting in this waiting room.It is for women and children only.A.oughtn't toB.can't
C.won'tD.needn't
10.The fire spread through the hotel very quickly but everyone ______ get out.A.had toB.wouldC.couldD.was able to
11.--When can I come for the photos? I need them tomorrow afternoon.--They _____be ready by 12:00.A.canB.shouldC.mightD.need
12..--I stayed at a hotel while in New York.--Oh, did you? You_ ____with Barbara.A.could have stayedB.could stay
C.would stayD.must have stayed
13.－Will you stay for lunch?
－Sorry,＿＿＿＿＿ ,My brother is coming to see me.A.I mustn'tB.I can'tC.I needn'tD.I won't
14.Sorry I'm late.I ______ have turned off the alarm clock and gone back to sleep again.A.mightB.shouldC.canD.will
15.I should have been there, but I _______ not find the time.A.wouldB.couldC.mightD.should
16.My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture.A.couldn't have attendedB.needn't have attended
C.mustn't have attendedD.shouldn't have attended
17.---Are you coming to Jeff's party?
---I'm not sure.I ________go to the concert instead.A．mustB．wouldC．shouldD．might
18.Mr.Bush is on time for everything.How _________ it be that he was late for the opening ceremony?
A．canB．shouldC．mayD．mustHe hesitated for a moment before kicking the ball, otherwise he ________ a goal.A．had scoredB．scored
C．would scoreD．would have scored
20.—Write to me when you get home.—_________
A．I mustB．I shouldC．I willD．I can
21.I was really anxious about you.You _____ home without a word.A.mustn't leaveB.Shouldn't have left
C.Couldn't have leftD.needn't leave
22.Oh, I’m not feeling well in the stomach, I______so much fried chicken just now.A.shouldn’t cutB.mustn’t have eaten
C.shouldn’t have eatenD.mustn’t eat
23.--I heard they went skiing in the mountains last winter.--It _____ be true because there was little snow there.A may not beB won’t beC couldn’t beD mustn’t be
24.It has been announced that candidates_____ remain in their seats until all the papers have been
collected.A canB willC mayD shall
25.A left-luggage office is a place where bags ______ be lefe for a short time, especially in a
railway station.A.shouldB.canC.mustD.will
26.---I don't mind telling you what I know.A.mustn'tB.may notC.can'tD.needn’t
27.I often see lights in that empty house.Do you think I _____ report it to the police?
A.shouldB.mayC.willD.can
28.Mr.White _____ at 8:30 for the meeting, but he didn’t’ show up.A.should have arrivedB.should arrive
C.should have had arrivedD.should be arriving
29.You ______ be tired-you've only been working for an hour.A.must notB.won' tC.can' tD.may not
30.— Who is the girl standing over there ?
— Well , if youknow , her name is Mabel.A.mayB.canC.mustD.shall
Keys:
1-5 ABCCA6-10DCAAD 11-15 BABAB16-20ADADC 21-25 BCCDB26-30 DAACC
第三篇：高中英语情态动词语法题
高中英语情态动词练习题
第一组题
1.I was really anxious about you.You______ home without a word.A.mustn’t leaveB.shouldn’t have leftC.couldn’t have leftD.needn’t leave
2.----Is John coming by train?
----He should, but he ________ not.He likes driving his car.A.mustB.canC.needD.may
3.A left-luggage office is a place where bags _______ be left for a short time, especially at a railway station.A.shouldB.canC.mustD.will
4.----Isn’t that Ann’s husband over there?
----No, it _______ be him-----I’m sure he doesn’t wear glasses.A.can’tB.must notC.won’tD.may not
5.You ________ be tired-----you’ve only been working for an hour.A.must notB.won’tC can’tD.may not
6, I often see lights in that empty house.Do you think I _______ report it to the police?
A.shouldB.mayC.willD.can
7.Mr.White _________ at 8:30 for the meeting, but he didn’t show up.A.should have arrivedB.should arrive
C.should have had arrivedD.should be arriving
8.----Tom graduated from college at a very young age.----Oh, he ________ have been a very smart boy then.A.couldB.shouldC.mightD.must
9.----Who is the girl standing over there?
----Well, if you ________ know, her name is Mabel.A.mayB.canC.mustD.shall
10.Children under 12 years of age in that country ________ be under adult supervision when in a public library.A mustB.mayC.canD.need
11.“The interest ________ be divided into five parts, according to the agreement made by both sides,” declared the judge.A.mayB.shouldC.mustD shall
12.----I don’t mind telling you what I know.----You _______.I’m not asking you for it.A.mustn’tB.may notC.can’tD needn’t
13.I _______ pay Tracy a visit, but I’m not sure whether I will have time this Sunday.A shouldB.mightC.wouldD.could
14.----I’ll tell Mary about her new job tomorrow.----You _________ her last week.A.ought to tellB.would have toldC.must tellD.should have told
15.----Excuse me.Is this the right way to the Summer Palace?
----Sorry, I am not sure.But it _______ be.A mightB.willC.mustD.can
16.----Excuse me, but I want to use your computer to type a report.----You _________ have my computer if you don’t take care of it.A shan’tB.might notC.needn’tD.shouldn’t
17.----Mum, I’ve been studying English since 8 o’clock._______ I go out and play with Tom for a while?
----No, I am afraid not.Besides, it’s raining outside now.A Can’tB.Wouldn’tC.May notD.Won’t
18.Tom, you _______ leave all your clothes on the floor like this!
A.wouldn’tB mustn’tC.needn’tD.may not
19.John, look at the time.________ you play the piano at such a late hour?
A MustB.CanC.MayD.Need
20.I ________ have been more than six years old when the accident happened.A.shouldn’tB couldn’tC.mustn’tD.needn’t
第二组题
1.He ________ have completed his work;otherwise, he wouldn’t be enjoying himself by the seaside.A.shouldB mustC.wouldn’tD.can’t
2.There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.A.mustn’tB.shan’tCshouldn’tD.needn’t
3.----I’ve taken someone else’s green sweater by mistake.----It ______ Harry’s.He always wears green.A could beB.will beC.mustn’t beD.has to be
4.He paid for a seat, when he _________ have entered free.A couldB.wouldC.mustD.need
5.----The woman biologist stayed in Africa studying wild animals for 13 years before she returned.----Oh, dear!She ________a lot of difficulties!
A.may go throughB.might go through
C.ought to have gone throughDmust have gone through
6.The World Wide Web is sometimes jokingly called the World Wide Wait because it _____ be very slow.A.shouldB.mustC.willD.can
7.----Catherine, I have cleaned the room for you.----Thanks.You ________ it.I could manage it myself.A.needn’t doBneedn’t have doneC.mustn’t doD.shouldn’t have done
8.This cake is very sweet.You ________ a lot of sugar in it.A.should putB.could have putC.might putD.must have put
9.----Tom is never late for work.Why is he absent today?
----Something _________ to him.A.must happenB.should have happened
C.could have happenedD must have happened
10.----Do you know where David is ? I couldn’t find him anywhere.----Well.He _______ have gone far----his coat’s still here.A.shouldn’tB.mustn’tC can’tD.wouldn’t
11.----Lucy doesn’t mind lending you her dictionary.----She _________.I’ve already borrowed one.A.can’tB.mustn’tC.needn’tD.shouldn’t
12.Helen ________ go on the trip with us, but she isn’t quite sure yet.A.shallB.mustC.mayD.can
13.There’s no light on----they ________ be at home.A can’tB.mustn’tC.needn’tD.shouldn’t
14.We hope that as many people as possible _________ join us for the picnic tomorrow.A.needB.mustC.shouldD.can
15.----What’s the name?
----Khulaifi.__________ I spell that for you?
AShallB.WouldC.CanD.Might
16.Black holes ________ not be seen directly, so determining the number of them is a tough task.A.canB.shouldC.mustD.need
17.We _________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.A.needn’tB.may notC.shouldn’tD.mustn’t
18.----Mr.Gordon asked me to remind you of the meeting this afternoon.Don’t you forget it!----OK, I _________.A won’tB.don’tC.willD.do
19.The weather turned out to be fine yesterday.I ______the trouble to carry my umbrella with me.A.should have takenB.could have taken
C needn’t have takenD.mustn’t have taken
20.----Could I have a word with you, mum?
----Oh dear, if you ________.A.canB.mustC.mayD.should
第三组题
1.As you worked late yesterday, you ________ have come this morning.Aneedn’tB.mayn’tC.can’tD.mustn’t
2.If it were not for the fact that she ______ sing, I would invite her to the party.A.couldn’tB.shouldn’tCcan’tD.might not
3.The workers will go on strike if the demands they _________put forward are turned down.A.couldB.wouldC./D.had
4.----I think I’ll give Bob a ring.----You _______.You haven’t been in touch with him for ages.A.willB.mayC.have toD should
5.----May I smoke here?
----If you ________, choose a seat in the smoking section.A.shouldB.couldC.mayDmust
6.----Must he come to sign this paper himself?
----Yes, he ________.A.needB mustC.mayD.will
7.Some aspects of a pilot’s job __________ be boring, and pilots often _______ work at inconvenient hours.A.can;have toB.may;canC.have to;mayD.ought to;must
8.----Is Jack on duty today?
----It ______ be him.It’s his turn tomorrow.A.mustn’tB.won’tCcan’tD.needn’t
9.----How’s your tour around the North Lake? Is it beautiful?
----It ________ be, but it is now heavily polluted.A.willB.wouldC shouldD.must
10.In crowded places like airports and railway stations, you ________ take care of your luggage.A.canB.mayC.mustD.will
11.----Guess what? I have got A for my term paper.----Great!You ________ read widely and put a lot of work into it.A.mustB.shouldC must haveD.should have
12.----She looks very happy.She ________ have passed the exam.----I guess so.It’s not difficult after all.A.shouldB.couldC mustD.might
13.----What do you think we can do for our aged parents?
----You ________ do anything except to be with them and by yourself.A.don’t have toB.oughtn’t toC.mustn’tD.can’t
14.----Turn off the TV, Jack._________ your homework now?
----Mum, just ten more minutes, please.A.Should you be doingB.Shouldn’t you be doing
C.Couldn’t you be doingD.Will you be doing
15.My MP4 player isn’t in my bag.Where ______ I have put it?
A.canB.mustC.shouldD.would
16.----My can’s really fat.----You ________ have given her so much food.A.wouldn’tB.couldn’tC.shouldn’tD.mustn’t
17.The biggest problem for most plants, which ________ just get up and run away when threatened, is that animals like to eat them.A.shan’tB can’tC.needn’tD.mustn’t
18.The teacher ______ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose.A.shouldB.canC.wouldD must
19.----Where is my dictionary ? I remember I put it here yesterday.----You _______ it in the wrong place.A.must putB.should have putC.might putD might have put
20.----What does the sign over there read?
----“No person _______ smoke or carry a lighted cigarette, cigar or pipe in this area.”
A.willB.mayC.shallD.must
参考答案
第一组
1-5 BDBAC6-10 AADCA11-15 DDADA16-20 AABAB 第二组
1-5 BCAAD6-10 DBDDC 11-15CCADA16-20 ABACA 第三组
1-5 ACCAD 6-10 BACCC11-15 CCABA 16-20 CBDDC
第四篇：高中英语情态动词练习
高中英语情态动词练习
1.He ______ you more help, even though he was very busy.A.might have givenB.might give C.may have givenD.may give
2.Jenny______ have kept her word.I wonder why she changed her mind.A.mustB.shouldC.need D.would
3..-Could I borrow your dictionary?
-Yes, of course you_________
A.mightB.will C.canD.should
4.I told Sally how to get here, but perhaps I ______ for her.A.had to write it outB.must have written it out
C.should have written it out D.ought to write it out
5.—Shall I tell John about it?
—No, you ______.I've told him already.A.needn'tB.wouldn't
C.mustn'tD.shouldn't
6.─There were already five people in the car but they managed to take me as well.─ It______ a comfortable journey.A.can't beB.shouldn't be
C.mustn't have beenD.couldn't have been
7.It's nearly seven o'clock.Jack______ be here at any moment.A.mustB.needC.should D.can
8..When he was there, he______ go to that coffee shop at the corner after workevery day.A.wouldB.shouldC.had betterD.might
9..Sir, you _____ be sitting in this waiting room.It is for women and children only.A.oughtn't toB.can't
C.won'tD.needn't
10.The fire spread through the hotel very quickly but everyone ______ get out.A.had toB.wouldC.couldD.was able to
11.--When can I come for the photos? I need them tomorrow afternoon.--They _____be ready by 12:00.A.canB.shouldC.mightD.need
12..--I stayed at a hotel while in New York.--Oh, did you? You_ ____with Barbara.A.could have stayedB.could stay
C.would stayD.must have stayed
13.－Will you stay for lunch?
－Sorry,＿＿＿＿＿ ,My brother is coming to see me.A.I mustn't B.I can't C.I needn't D.I won't
14.Sorry I'm late.I ______ have turned off the alarm clock and gone back to sleep again.A.mightB.shouldC.canD.will
15.I should have been there, but I _______ not find the time.A.wouldB.couldC.mightD.should
16.My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture.A.couldn't have attendedB.needn't have attended
C.mustn't have attendedD.shouldn't have attended
17.---Are you coming to Jeff's party?
---I'm not sure.I ________go to the concert instead.A．mustB．wouldC．shouldD．might
18.Mr.Bush is on time for everything.How _________ it be that he was late for the opening ceremony?
A．can B．shouldC．mayD．mustHe hesitated for a moment before kicking the ball, otherwise he ________ a goal.A．had scored B．scored
C．would score D．would have scored
20.—Write to me when you get home.—_________
A．I mustB．I shouldC．I willD．I can
21.I was really anxious about you.You _____ home without a word.A.mustn't leaveB.Shouldn't have left
C.Couldn't have leftD.needn't leave
22.Oh, I’m not feeling well in the stomach, I______so much fried chicken just now.A.shouldn’t cutB.mustn’t have eaten
C.shouldn’t have eatenD.mustn’t eat
23.--I heard they went skiing in the mountains last winter.--It _____ be true because there was little snow there.A may not be B won’t be C couldn’t be D mustn’t be
24.It has been announced that candidates_____ remain in their seats until all the papers have
been collected.A can B will C may D shall
25.A left-luggage office is a place where bags ______ be lefe for a short time, especially in
a railway station.A.shouldB.canC.mustD.will
26.---I don't mind telling you what I know.---You.I'm not asking you for it.A.mustn'tB.may notC.can'tD.needn’t
27.I often see lights in that empty house.Do you think I _____ report it to the police?
A.shouldB.mayC.willD.can
28.Mr.White _____ at 8:30 for the meeting, but he didn’t’ show up.A.should have arrivedB.should arrive
D.should be arriving C.should have had arrived
29.You ______ be tired-you've only been working for an hour.A.must notB.won' tC.can' tD.may not
30.— Who is the girl standing over there ?
— Well , if youknow , her name is Mabel.A.mayB.canC.mustD.shall
Keys:
1-5 ABCCA6-10 DCAAD11-15 BABAB16-20 ADADC21-25 BCCDB26-30 DAACC
第五篇：2014年最新情态动词专项练习
江苏省淮安中学高一II部英语情态动词专项练习编制人：郭琪审核人：秦芬
have done the research on his own.A.canB.mustC.wouldD.need
2.It ______ be the vocabulary that caused you the problem in the exercise because you know a lot of words.A.mayB.couldn'tC.shouldD.needn't
3.He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.A.wouldn'tB.shouldn'tC.couldn'tD.mustn't
4.The childrenin the woods;otherwise, they would have been at the lakeside camp as scheduled.A.must have gotB.must getC.should have gotD.should get
5.Days later, my brother called to say he was all right, but say where he was.A.mustn'tB.shouldn'tC.wouldn'tD.mightn't
6.We ________ have bought so much food now that Suzie won't be with us for dinner.A.may notB.needn'tC.can'tD.mustn't
7.Mr.Smith is on time for everything.Howhe be late for the ceremony?
A.willB.canC.shallD.may
8.As I was sitting down for dinner, the telephone
A.shouldB.mustC.could
9.—I promise Shirleyget a new iPad on her birthday.—Will it be a big surprise to her?
A.willB.wouldC.should
10.—I turn on the TV for you, Grandpa?
—Yes, thanks a lot, my dear.You’re so considerate.D.wouldD.shall
A.MayB.ShallC.WillD.Need
11.—It's eight o'clock already.Jack _______ be here by now.—Oh, he told me that he was going to see his dentist and wouldn't be back until ten.A.mustB.canC.shouldD.need
12.—I had a very boring weekend at home.—Why did you stay at home? Youwith us.A.might hikeB.could have hikedC.should hikeD.must have hiked
13.—These days I am even sleepy in class.—How terrible it is!Youas well go to bed earlier.A.shouldB.willC.canD.may
14.Overloaded with work, school teachers now get far less sleep than they ______.A.shallB.shouldC.mayD.might
15.—Did you attend the opening ceremony of The Voice of China last week?
—Sorry!We ________ it, but we had a terrible traffic accident on our way.A.must have attendedB.must attendC.could have attendedD.could attend
江苏省淮安中学高一II部英语情态动词专项练习编制人：郭琪审核人：秦芬
16.I ______ myself more----it was a perfect day.A.shouldn‘t have enjoyedB.needn‘t have enjoyed
C.wouldn‘t have enjoyedD.couldn‘t have enjoyed
17.-----How did you do in the test?
-----Not so well.I ______ much better but I misread the directions for Part D.A.could have doneB.could doC.must have doneD.should do
A.might have failedB.could have failed
C.should have failedD.must have failed
19.—Mother, I climbed up to that tall tree and picked this big apple.—Jesus!You______ down and hurt yourself.A.might have fallenB.might fallC.must have fallenD.must fall
20.— I phoned you yesterday morning.A girl answered, but I didn’t recognize the voice.— Oh, it ____ my younger sister.She was in my room at that moment.A.must have beenB.should have beenC.could have beenD.may have been
21.— Can I pay the bill by check?
— Sorry, sir.According to the rules of our hotel, the payment ______ be made in cash.A.shallB.needC.willD.can
22.---Do you know where David is? I couldn’t find him anywhere.---Well.He ______ have gone far — his coat’s still here.A.needn’tB.can’tC.mustn’tD.wouldn’t
23.The new law states that people ________ drive after drinking alcohol.A．wouldn'tB．needn'tC．won'tD．mustn't
24.—Shall I inform him of the change of the schedule right now?
—I am afraid you ________, in case he comes late for the meeting.A．willB．mustC．mayD．can
25.The door ________ open, no matter how hard she pushed.A．shouldn'tB．couldn'tC．wouldn'tD．mightn't
26.—I left my handbag on the train, but luckily someone gave it to a railway official.—How unbelievable to get it back!I mean, someone ________it.A．will have stolenB．might have stolenC．should have stolenD．must have stolen
27.—John looks a bit upset.Did you tell him the bad news?
—Yes, but I ________ him after his birthday party.A．should have toldB．must have toldC．shouldn't have toldD．needn't have told
28.—Where ________ Mary have put the empty bottles?
—She ________ them away.They must be somewhere.A．can;can't have thrownB．must;needn't
C．must;must have thrownD．can;mustn't have thrown
29.I ________ thank you too much for all your help to my son while we were away from home.A．won'tB．can'tC．canD．will
30.Peter _____ be really difficult to get along with at times even if he’s a nice person in general.A.shallB.shouldC.canD.must
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