第一篇：情态动词小结
情态动词小结
情态动词有：can（could），may（might），must，have to, shall（should），will（would），need, dare, ought to等。一． 情态动词can, may, must用法 ㈠基本用法 1.can ⑴ 会，能够--Can you swim?--Yes, I can.--No, I can‟t.⑵ 口语中代替may.You can(may)park here.你可以把车停在这里。(许可)2.may允许，许可--May I come in?--Yes, you may./Sure, come on in.--No, you mustn‟t./No, you can‟t.No, you‟d better not.3.must必须--Must we finish the exercise today?--Yes, you must.--No, you needn‟t./No, you don‟t have to.4.need 需要，必需--Need you go now?=--Must you go now?--Yes, I must.--Yes, I must.--No, I needn‟t.--No, I needn‟t.(need作为情态动词，通常用在否定句和疑问句中。)注意一：can 与be able to 都可以表示“能力”，区别是： ⑴ can只有现在和过去两种形式
I can play the piano.She couldn‟t play the piano when she was a little girl.⑵ be able to ① 有更多的形式和时态
We shall/will be able to finish the work next week.I haven‟t been able to find the book.② 指具体一次活动
I can swim but I am not able to cross the rough sea.有时两者可以互换: I‟m not able to(can‟t)answer your question.Are you able to(Can you)type(打字)？
注意二：could的用法
⑴ 作为can的过去式，表示过去的能力。
When I was young I could climb any tree in the forest.这时也可用was(were)able to ⑵ 用来代替can，婉转地提出请求，想法，建议等。回答这种情况下could引导的一般疑问句时，不用could，而要用can。A: Could you tell me how to get to the hospital? B: Of cause, I can.注意三：must的否定形式表示“不得”，“一定不要”，“禁止” ① You mustn‟t take photos in here.It‟s forbidden(禁止).② You mustn‟t drive without a license（驾照）.③ We mustn‟t be late, must we？
（与第4页对比，此must不表猜测,两回事。）注意四：must的过去式是must，常用 had to 代替。I had to see the dentist.注意五：must 和 have to 都可以表示必须，但must表示说话人的主观看法，have to表示客观需要。You must say sorry to me for that.You have to drive quickly, we have little time.注意六：May+动词原形表“祝愿”。
May you succeed.May you be happy every day.㈡ 可能性用法
1.can表示“可能性”① 疑问句：只能用can
Who can it be ?
② 否定句：cannot(can‟t)“不可能 It cannot be Jenny.2.may表示“可能性”① 否定句：may not“可能不”
It may not be Jenny.② 肯定句：“大概”，“也许”，“可能” It may be Jenny.3.must表示“可能性”，只能用于肯定句，表推测：“一定是”，“准是”，“必是”，“必定”。
It must be Jenny.小结表示“可能性”：
疑问句：只能用can 否定句：cannot(can‟t)“不可能”(反义词是must“准是”)may not“可能不”
肯定句：may “大概”
must“准是”(反义词是can‟t)注意一: 在表示“可能性”时，凡是对过去事物的猜测，不管是疑问．．句，否定句还是肯定句，都要用完成时。．．．① It must have rained last night.You see, the ground is still wet.② He can‟t have been to your home.He doesn‟t know your address注意二：may+原型 表示 现在或将来的可能性。若表示对过去事物 ．．．． 的猜测，则用完成时。③ He may come today.(tomorrow)He might come today.(tomorrow)(might语气更不肯定，不是may的过去时)④ She might have called for help.她可能大声喊“救命”了。请翻译下里句子：
1.Where can Wei Fang be? 2．That can‟t be Mary.She is in hospital.3.Surely you can‟t be hungry.You‟ve only just had lunch.4.The key can‟t be in the room.I have just searched it carefully.5.You may/ can go and ask him.But he may not answer you.6．A：Look！Someone is coming.Who can it be? B: It may be our headmaster.A: It can‟t be him.He has gone to Shanghai.B: It must be Mr.Zhang.He looks like our headmaster.7.Anna may know Tom‟s address.8.They may be waiting at the station.9.I may be going to Europe next year.10．He may have gone abroad.11.I‟m afraid I must be going now.12.You must be hungry.Have something to eat.13.They must be twins.14.There‟s a lot noise from next door.They must be having party a party.15.I can‟t find him anywhere.He must have left.16.I can‟t find my book.I must have left it at home.17.You must have been thinking of something.18.A: We went to Hainan for the winter vacation.B: That must have been nice.注意三：must表示猜测时的反义疑问句
⑴ “must be +表语”的结构，must表示肯定猜测时，含有“准是”，“势必”，“一定”等意义时，反义疑问句用“isn‟t/aren‟t+主语” They must be hungry after the long walk, aren‟t they? ⑵ “must have done” 表示猜测时，反义疑问句用“haven‟t/hasn‟t +主语”或“didn‟t+主语”
① They must have studied English before, haven‟t they? ② She must have met a fairy(仙女), hasn‟t she? ③ You must have seen the film last week, didn‟t you? ．．．．．．．．解题秘笈：① 把must去掉 ② 找时间状语 ③ 重新组成一新句子 ④ 按新句子的时态造反义疑问句
① You must have been to Beijing, ＿＿＿ ＿＿？
去掉must；无时状；重组成You have been to Beijing； 故答案为：haven‟t you ② You must have finished your homework yesterday, ．．．．．．．．．＿＿＿ ＿＿？去掉must；时状为yesterday;重组成 You finished your homework yesterday;故答案为：didn‟t you 二．情态动词need的用法
⑴ need 表示“需要”，“必需”。作为情态动词，通常用在否定句和疑问句中。
① He needn‟t pay for it.(情态动词)=He doesn‟t need to pay for it.(行为动词)②--Need you go now?=--Must you go now?--Yes, I must.--Yes, I must.--No, I needn‟t.--No, I needn‟t.⑵ need也可用作行为动词，其变化与一般动词相同。① We need to think it over.(肯定句)② Does he need to know it?=Need he know it? ③ She didn‟t need to go.=She needn‟t go.⑶ 按句型背：
need doing=need to be done ① The door needs painting.=The door needs to be painted.② The old man needed looking after.= The old man needed to be looked after.三．情态动词dare的用法
⑴ dare 表示“敢” 作为情态动词，通常用于否定句，疑问句或条件句中。dare 作为情态动词只有两种形式:dare, dared(当主语是第三人称单数时，dare 不加s)① She dare not do so.(否定句)② Dare he do it?(一般疑问句)③ How dare you say I‟m unfair.(特殊疑问句)④ Jump if you dare.有胆量你就跳。（条件句）⑵ 除了在“I dare say…” 这种习惯用语中，dare 在肯定句中作 情态动词的情况是很少的。（特殊用法，口语中常用，按句型背）① I dare say you are wrong.② A: If you die, who will get your money？
B: I dare say my uncle will.I have no other relatives.(亲戚)⑶ dare 也可用作行为动词，其变化与一般动词相同。① Who dare to go? ② I don‟t dare(to)ask her.问：此句中的to 为什么可以省略？
答: 当dare 作为①行为动词②在否定句中(两个条件必须同时具备)，其后面的不定式可以省略to。又如： ③ We didn‟t dare(to)try a shot.四．情态动词shall和should的用法
⑴ shall 作为情态动词，用于二，三人称，表示说话人的意愿，有．．．．．．．．“命令”，“警告”，“威胁”，“强制”，“允诺”等意思。（一人称用 shall是将来时）
① You shall do as I say.(命令)② Tell him that he shall have the book tomorrow.（允诺）③ You shall have whatever you want.(诺言)(我答应)你要什么我给你什么。
④ He shall be sorry for it one day.(警告)有一天他会后悔的，我告诉你。
⑵ 在疑问句中，shall 用来征询对方意见或请求指示，用于一，三．．．．．．．．．．．人称。译成“（你说）…好吗？”
① Where shall I wait for you?(你说)…
② 区别： Shall he come at once?(你说)他要不要立刻来?
（征求你的意见，情态动词）
Will he come at once？他将立刻来吗？（纯将来时）③ Shall we start the meeting now？
④ Let‟s have a rest, shall we?(Let‟s 包括对方)对比：Let us have a rest, will you?(Let us 不包括对方)对于上述这类问句的回答，没有严格不变的肯定或否定模式。⑤ Shall I open the window? Yes, please.⑥ Shall I get you some more tea? Yes, please.⑦ Shall we have a meeting tomorrow? Yes ,I agree./(Well, I don‟t think we need to.)⑧ Shall we go there by bike? All right.(OK./Yes, I think so.)⑨ Shall we go to the park? Good idea!⑶ should 作为情态动词，译成“应该”
① You should keep your promise.② We should be strict in all our work.五．情态动词 will和would的用法 ⑴ will 表示“意志”,“意愿”,可用于各种人称。．．．． ① I will(乐意，愿意)tell you all about it.② We will help him if he asks us(to).③ He won‟t go.⑵ 在疑问句中，will用来征询对方意见或请求指示，用于二人称。．．．．．．．．．．．译成“（你说）…好吗？”
①---I‟m going down to the shop after school.Will you go with me?---Yes,I will.(I‟m sorry, I can‟t)② Will you please open the window? =Please open the window, will you? ③ Don‟t forget to give her some food and change her water, will you?(祈使句,用will you)④ Be sure to write to us, will you?(祈使句)⑤ Let us have a look at your photos, will you？ ⑥ –Alice, you feed the bird today,＿＿＿？-But I fed it yesterday.A.do you B.will you C.didn‟t you D.don‟t you ⑶ 表示习惯性动作，有“总是”，“惯于”的意思。还表示“自然倾向”。
① He‟ll talk for hours if you give him the chance.② Fish will die out of water.would ⑴ would是will的过去式，表示过去时间的“意志”，“愿望”用于各种人称。
①“We will help you.” said they.They said that they would help us.② No one would say that he couldn‟t see the Emperor‟s new clothes.③ I promised that I would do my best.(按句型记)made a promise ⑵ 表示说话人的意愿或向对方提出请求，语气比will婉转。指的是现在时间。
① I‟d like to see your ten-speed bicycles.② Would you like some bananas?(Bananas!I love them./ Yes, please./ No, thanks.)③--Would you like to see a film?--Yes, I‟d like to./I‟m glad to./I want to./ I‟d love to.…
/Thanks.I‟m afraid I won‟t be able to./Thanks.That would be nice.④--Would you like to come to supper?--Oh, thank you!I would love to.注意：I‟d like to=I‟d love to=I would like to=I should like to =I would like to=I should love to.①--④按句型记
⑤ Would you tell me the way to the station?(比will 婉转)⑶ 表示过去的习惯动作,“总是，惯于，过去常常”比used to 正式。且没有“现在已无此习惯”的含义。
① In winter, snow fell and the roofs of my old house would become thick, and all the trees would become white.② She would sit like that for hours.③ Every day she would get up at six o‟clock.⑷ 表猜测
① It would be ten o‟clock when she left home.② I‟d say she „s about 40.六．情态动词ought to的用法
ought to=should“应该”，“应当” 否定形式oughtn‟t to= shouldn‟t ① You ought to visit your parents more often.= You should visit your parents more often.② You oughtn‟t to make private phone calls in work time.= You shouldn‟t make private phone calls in work time.七．情态动词had better的用法
had better表示“最好…”（had 常缩写为‟d）否定形式为had better not ① You‟d better take a nap after lunch.② We‟d better wait for him.③ You‟d better call a doctor.④ They‟d better go home.⑤ You‟d better not talk like that.13
第二篇：情态动词need用法小结
一、NEED与句子类型
（本条可参照ANY的用法。）NEED可用于：
1.否定句/含有否定意义的句子 1)否定句
含not/hardly/never/nobody等词语。I needn’t say anything.He need hardly advise me.You never need tell me this or that.Nobody need help me.I don’t think he need come.（否定转移）
注：NEEDN’T的意思其实有三种，即不必要/不一定/不应该，视具体语境而定。2)含有否定意义的句子
含only/but/all/before/than等词语。He need only wait here.You need but consider the matter to understand its importance.That’s all that need be said.Do not stay longer than you need.There was another hour before I need go out into the cold.2.疑问句/表示疑问的从句 1)疑问句（包括否定疑问句）Need he say it again? 2)表示疑问的从句
I wonder whether/if I need see her.3.条件句
含if/unless等词。
If he need come, he will.本条要点简单概括起来就是，NEED不能用于肯定句。以下的各种用法也遵循这条规则。
二、NEED与时态 1.现在时
NEED常用于现在时。You needn’t stay.2.将来时
You needn’t have your blood pressure taken tomorrow.3.过去时
NEED的过去式仍然是NEED。1)过去时间由一过去时间状语表示 He need not come yesterday.2)过去时间由另一过去时动词表示。All he need do was to inquire.It was clear that he need never trouble to get up at seven again.I told him he needn’t be in a terrible fix.注：表示过去的NEED常用于间接引语中。（本条可参照must的用法）
三、NEED与虚拟语气 1)NEED用于虚拟条件句
（本条可参照虚拟条件句的构成及用法。）If money were useless, we need not struggle for it.If you had been careful enough, you need not have suffered.注：本条用法较为少见。
2)NEED单独使用：NEEDN’T HAVE DONE（本条可参照SHOULDN’T HAVE DONE的用法。）You need not have worried.注：NEED HAVE DONE的形式较为少见
Need you have scolded him so severely for his bad work? He had done his best.（否定意味）
He need have gone and sent that letter in person.（实际上没有做）
四、NEED与推测
NEEDN’T表示“不一定”。（本条可参照must/can的用法。）1)NEEDN’T+BE
It needn’t be hot in Florida now.对比：
It can’t be hot in Florida now.（一定不）It must be hot in Florida now.（一定）2)NEEDN’T+HAVE DONE
He need not have seen much of the world, though he is an old man.对比：
He can’t have seen much of the world, for he is just a little boy.He must have seen much of the world, for he has been traveling so widely.五、NEED与问句 1)反意疑问句的构成 You needn’t go, need you? 2)答句的构成---Need he go?---Yes, he must/has to/needs to.---No, he needn’t.（本条可参照must的用法）
六、情态动词NEED与实义动词NEED 1)使用范围
作为实义动词的NEED有人称、数和时态的变化，使用范围更为广泛，不受句子类型和时态的限制。在肯定句、过去时和将来时的句子中，一般使用作为实义动词的NEED。
He needs to see a doctor straightaway.（此处needs to不能换做need，因为本句是肯定句）
Will he need to start earlier? 注：
NEED TO BE DONE与NEED DOING可以互换，后者更为常用（这里的NEED均为实义动词）。2)含义差别
NEEDN’T HAVE DONE与DIDN’T NEED TO DO表示“不必要”的时候，在意义上有所差别，前者表示“本不必做„„”，实际上已经做了（NEED为情态动词）；后者单纯地表示“不必做„„”（NEED为实义动词）。
第三篇：情态动词教案
情态动词教案
Teaching Aims 【教学目标】 1.Knowledge Aims（知识目标）
1.掌握情态动词can, may, must, need, should…的含义和特点； 2.掌握情态动词用法。
2.Ability Aims（能力目标）
1.Encourage the students to cooperate with others and enable them to formulate
grammatical rules.2.By learning, motivate the students 'inspiration and take an active part in the course of the class.3.Emotion Aims（情感目标）
Build up the student’s confidence.Teaching Importance and Difficulties 【教学重点和难点】
1.含有情态动词的疑问句和否定句； 2.情态动词表示推测的用法。
Teaching Methods(教学方法)
Self-learning，cooperation and discussion自学（独学、对学、群学）、合作、讨论
Teaching Process(教学过程)Preparation and Self-learning 【自主学习、为新课奠基】
Complete the following tasks.（A级 识记类）（C层学生展示，B、A层学生补充）
一、何谓“情态动词”？
情态动词主要用来表示说话人的情感、态度等，是中学英语语法的重点，也是高考的热点，是单项填空必考的一个知识点。情态动词在近五年高考中主要考查四点：情态动词表示推测和可能性的用法；情态动词与虚拟语气；情态动词的表达“情感、态度、语气等”，情态动词表示 “必要性”等方面的用法。
二、情态动词的特点 1.没有人称和数的变化。2.有些情态动词有过去式的变化: e.g.will → would , can → could , may→ might , dare → dared
三、情态动词的否定形式
情态动词+ not +动词原形can not: can't , must not: mustn't , need not : needn't Cooperation and Discussion 【合作探究、讨论解疑】
Reading------知识问题化、问题层次化，提高阅读能力！（B级 理解类）（B、C层学生展示，A层学生补充）
四、情态动词的用法及相互间的区别（注意：这是常考的考点）
1.can , be able to be able to 表示经过努力后, 能够做到;be able to 有多种形式的变化。can 1).表示体力或脑力方面的能力;2).表示允许、可能性。
could 是can的过去式, 表示过去有能力及过去存在的可能性;用于疑问句表示委婉地提出问题。
1)The fire spread through the hotel very quickly but everyone ____ get out.A.had to B.would C.could D.was able to 2)-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 2.may 表示询问或说明一件事可不可做;表示某事有可能发生。might是may的过去式;用在疑问中比may委婉、客气。1)-May I take this book out of the reading-room?-No, you mustn't.(Yes, you may.)2)-Might I make a suggestion?-Yes, you may.3.must 1).表示必须要做的事: 必须
2)表示很有把握的推断: 一定, 准是。have(has)to : have(has)got to 必须, 不得不。过去式: had to 3)-Must I get to the station before three o'clock?-Yes, you must.(No, you needn't.)4)I'm afraid you will have to wait a while.5)She must be in the classroom now.6)Mary ____ be in Paris, I saw her in town only a few minutes ago.A.mustn't B.shouldn't C.can't D.may not 4.shall 1)在疑问句中, 用于第一、三人称表示说话人征求对方的意见或向对方请求。2)用于二、三人称,表示说话人给对方的 命令、警告、允诺等概念。1)Yes, please.(No, please don't.)2)You shall have the English book as soon as I finish it.3)Everything that he owns shall be taken away from him.4)Your brother seldom comes to see you, ____? A.does he B.doesn't he C.will he D.isn't he 5)It's a fine day.Let's go fishing, ____? A.won't we B.will we C.don't we D.shall we 5.should 应该;应当
1)You should listen to the doctor's advice.2)You should study the article carefully.6.will, would 1)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。用would语气更加婉转。
2)will 表示现在的习惯性动作或状态;would 表示过去的习惯性动作或状态。3)will 用于各种人称, 表示 意志、意愿、决心、允诺;would 表示过去时间的 意志、意愿、......。
(1)Don't smoke in the meeting room, ___ you? A.do youB.will you C.can you D.could you-Will you come with me?-Yes, I will.(I am sorry , I can't.)(2)-Would you tell us something about yourself?-Yes, I will.(3)_____.A.I don't B.I won't C.I can't D.I haven't 7.ought to 应该;应当
1)You oughtn't to smoke too much.2)She ____ for what she has done.A.ought to praise B.ought be praised C.ought to have praised D.ought to be praised 8.dare 1.dare to come 2.dare come 1)He dare not tell the truth.2)He doesn't dare to come out at night.3)I don't know whether he ____ try.A.dare B.needs C.wants D.is allowed 9.need 1).作为情态动词:必须 2).作为实义动词: 需要
A.主语是人 need(to do something;to be done by somebody)B.主语是事物 need(doing;to be done)1)-Do they need to take any books with them?-No, they don't need to.2)-Need we buy any new equipment?-No, we needn't.3)This farm tool needs repairing.This farm tool needs to be repaired.4)-Shall I tell John about it ?-No, you ___.I've told him already.A.needn't B.wouldn't C.mustn't D.shouldn't 5)It's a fine day.You ____ take a raincoat with you.A.can't B.mustn't C.needn't D.may not [★★★]
五、情态动词的解题例析
(1)认真审题，结合所给出的语境，正确把握说话者的语气、情感、态度、观点等。
(2)认真思考所给选项中情态动词的基本特征和用法，并结合语境推敲答案。(3)要注意把握时间概念。
情态动词无论是表达“推测和可能性”，还是表达“虚拟”这一概念，只要是对过去已经发生的事情进行描述，一律用“情态动词+have done”这一结构；对现在或将来的事情进行描述，用“情态动词+动词或系动词原形”。例如：
（NMET2008山东，24）Thank you for all your hard work last week.I don’t think we ______ it without you.A.can manage
B.could have managed C.could manage D.can have managed 根据题干中所给出的时间last week可知我们已经做完了工作，已经完成，故排除A、C两项，再结合could have done表示虚拟语气以及与前面的I don’t think…，故说话者想表达的意思是：离开了你，我们本不可能完成这项工作。故答案为B项。
Expansion and Improvement【知识拓展、能力提升】（D级 拓展类）（C、B层学生展示，A层学生补充）
★下面我们来看看常考的一些情态动词★
以下试题均来源于往年的高考试题，具有很强的针对性
(1)must表示推测，意为“一定„„”，只能用于肯定句中。must have done意为：一定做过某事或某事肯定发生了。例如：
—She looks very happy.She ______ have passed the exam.—I guess so.It’s not difficult after all.A.should
B.could
C.must
D.might 【解析】句意为：她看上去很高兴，一定是通过了考试。【答案】C(2)should(not)/ ought(not)to在中表示根据常规或常识推测，表示“某事应该或不应该发生”，语气比must或can’t / couldn’t稍弱。例如：—How’s your tour around the North Lake? Is it beautiful? —It ________ be, but it is now heavily polluted.A.will
B.would
C.should
D.must 【解析】should此处表示推测，意为“应该”。【答案】C ②There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.A.mustn’t
B.shan’t
C.shouldn’t
D.needn’t 【解析】句意：既然你在驾校进行了大量训练，那么通过道路测试按理不应该有困难。【答案】C(3)can, could表达推测时，一般用于疑问句和否定句中；can用于肯定句中表示一种理论上的可能性，并不牵涉是否真的会发生，在这种用法中can只能与动词原形连用；could用于肯定句中，语气比may/ might更弱。例如： ①You ______ be hungry already — you had lunch only two hours ago!
A.wouldn’t
B.can’t
C.mustn’t
D.needn’t ②She ______ have left school, for her bike is still here.A.can’t
B.wouldn’t
C.shouldn’t
D.needn’t ③It is usually warm in my hometown in March, but it _____ be rather cold sometime.A.must
B.can
C.should
D.would ④Peter ____ be really difficult at times even though he’s a nice person in general.A.shall
B.should
C.can
D.must 【解析】①② 两个考题中can用于中表示否定的推测，意为：不可能，一定不会； ③④两个考题中can表示理论上的可能性，翻译为：有时候会„„。【答案】① B ② A
③ B ④ C(4)may(not)/ might(not)表达一种不太把握的推测，意为“或许，可能”；might的语气比may较婉转。例如：
① Liza ___ well not want to go on the trip---she hates traveling.A.will
B.can
C.must
D.may 【解析】may well为固定搭配，意为：很可能，极有可能。【答案】Ｄ
②
Although this ____ sound like a simple task, great care is needed.A.must
B.may
C.shall
D.should 【解析】这听起来或许是一项简单的任务，但却需要极大的细心。【答案】B ③—I can’t find my purse anywhere.—You __ have lost it while shopping.A.may
B.can
C.should
D.would 【解析】结合语境可知，回答者是在提醒对方：或许购物时把钱包丢了。【答案】A
（二）表达虚拟语气的情态动词
对过去的一种结果的假设或虚拟，用情态动词+have done这一结构，常用的有以下几个情态动词：
(1)should(not)/ ought(not)to have done本（不）应该做某事，但却没有做或做了，含有责备或后悔之意。例如：
—I’m sorry.I _________at you the other day.—Forget it.I was a bit out of control myself.A.shouldn’t shout
B.shouldn’t have shouted C.mustn’t shout
C.mustn’t have shouted 【解析】对不起，我那天本不应该对你大喊大叫的。【答案】B(2)could have done本来能够做某事但未做。例如：
Thank you for all your hard work last week.I don’t think we ______ it without you.A.can manage
B.could have managed C.could manage
D.can have managed 【解析】根据题干中所给出的时间last week可知我们已经做完了工作，已经完成，故排除A、C两项，再结合could have done表示虚拟语气以及与前面的I don’t think„，故说话者想表达的意思是：离开了你，我们本不可能完成这项工作。【答案】B(3)needn’t have done本没有必要做某事但却做了。要注意needn’t do则表达“没有必要去做某事”，时间上应该是现在或将来。例如： ①—Catherine, I have cleaned the room for you.—Thanks.You ________ it.I could manage it myself.A.needn’t do
B.needn’t have done
C.mustn’t do
D.shouldn’t have done 【解析】根据句意可知Catherine对对方为她打扫了房间表示感谢并提到对方不必为她打扫房间。【答案】B ② The boss has given everyone a special holiday, so we
go to work tomorrow.A.can’t
B.mustn’t
C.needn’t
D.shouldn’t 【解析】老板给所有的员工放了假，所以我们明天不必再去上班。【答案】C(4)would(not)have done本来(不)会发生某事，但却（发生了）或没有发生。常用于虚拟条件句或含蓄虚拟条件引导的虚拟语气，表示对过去所发生事情结果的假设。例如：
He hesitated for a moment before kicking the ball, otherwise, he ________ a goal.A.had scored
B.scored
C.would score
D.would have scored 【解析】句中otherwise为含蓄条件，相当于if he had not hesitated for a moment before kicking the ball，这是对过去的一种虚拟假设。【答案】D(5)might have done表示“本来可能„„”，但实际上没有发生的事。例如： What a pity!Considering his ability and experience, he ________ better.A.need have done
B.must have done C.can have done
D.might have done 【解析】真是可惜！考虑到他的能力和经验，他本来可以做得更好的。【答案】D
（三）表达“情感、态度、语气” 等方面的情态动词 1.must表达“情感、态度、语气”主要有以下用法：
(1)表示主观的义务和必要，主要用于肯定句和疑问句，意思为“必须„„，得„„，要„„”；由must引起的疑问句，肯定回答要用must或have to，否定回答要用needn’t或don’t have to,意思是“不必”。另外，must与have to都可以表示“必须”这一含义。must表示一种主观的需要，而have to表示一种客观的需要，意思是“不得不”，其否定形式是don’ have to。例如：-What sort of house do you want to have? Something big?--Well, it ______ be big--that's not important.A.mustn't
B.needn't
C.can't
D.won't
【解析】Something big?此处意为：Must it be big? 回答者的意思是：房子不必太大—那并不重要。
【答案】B
(2)must的否定形式mustn’t表示禁止，意思是“不能，不许”。例如： When I was young, I was told that I ______ play with matches
A.wouldn't
B.needn't
C.mustn't
D.daren't 【解析】当我年轻的时候，（家人）就一直告诫我千万不要玩火柴。【答案】C(3)must用于条件句或疑问句中，可以用来表示责备、抱怨的感情色彩，意思为“偏要，硬要、干嘛”。例如： ①—May I smoke here ? —If you ____, choose a seat in the smoking section.A.should
B.could
C.may
D.must ②John, look at the time.___________ you play the piano at such a late hour? A．Must
B．Can
C．May
D．Need 【解析】must在这两道试题中均表示“非得，偏要”。【答案】① D
② A 2.should(1)should应该，表示“责任和义务”。例如：
According to the air traffic rules, you ___ switch off your mobile phone before boarding.A.may
B.can
C.would
D.should 【解析】should此处表示根据交通法规应尽的责任和义务。【答案】D(2)在虚拟条件句中用以加强假设语气，表示“与将来事实相反的假设”，用 If+主语+ should +动词原形，当“万一(会)”讲。这时可省略if，将should提到句首，变为倒装句式。请看下面的例子：
If it should rain(=Should it rain)tomorrow, I would stay at home.万一明天下雨的话，我就待在家里。再如：
________ fired, your health care and other benefits will not be immediately cut off.A.Would you be
B.Should you be
C.Could you be
D.Might you be 【解析】句意：万一你被解雇，给你的医疗救助和其它方面的福利也不会被取消。【答案】B(3)should还可以用来表示说话人对某事不能理解、赶到意外、惊异等意思，译为“竟然，竟会”。例如：
You can’t imagine that a well-behaved gentleman _____ be so rude to a lady.A.might
B.need
C.should
D.would 【解析】句意：你想象不到这么一个表现良好的绅士竟然会对一个女士这么粗鲁。【答案】C 3.shall(1)shall用于第一和第三人称，常用于疑问句中，用来征求对方意见。例如： ①—What’s the name? —Khulaifi._________ I spell it for you?
A.Shall
B.Would
C.Can
D.Might 【答案】A
(2)用于第二和第三人称，表示“命令、威胁、警告、允诺、”等。例如： —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’t
B.might not
C.needn’t
D.shouldn’t 【解析】shall此处表示“警告”。【答案】A(3)shall也用于宣布法律、规定的要求。例如： ①—What does the sign over there read? —“No person ________ smoke or carry a lighted cigarette，cigar or pipe in this area.”
A.will
B.may
C.shall
D.must 【解析】禁止吸烟是此处的规定。【答案】C 4.can(1)can可以用来表示惊异、怀疑、不相信的态度，主要用于否定句、疑问句或感叹句中。例如：
How ______ you say that you really understand the whole story if you have only covered only part of the article? A.can
B.must
C.need
D.may 【答案】A(2)can也可以用来表示请求或许可。例如： —Mum, I’ve been studying English since 8 o’clock.______I go out and play with Tom for a while? —No, I’m afraid not.Besides, it’s raining outside now.A.Can’t
B.Wouldn’t
C.May
D.Won’t 【答案】A(3)can可以表达一般的或永久的能力。be able to也可表达能力，但常用来表达在某件事情中所表现出来的能力，尤指克服困难能够完成某事。例如： ①
If it were not for the fact that she ______ sing, I would invite her to the party.A.couldn’t
B.shouldn’t
C.can’t
D.might not ②
The fire spread through the hotel very quickly but everyone ______ get out.A.had to
B.would
C.could
D.was able to 【答案】C 5.would(1)will与would可表示“意愿；意志 ”。
例如： John promised his doctor he _____ not smoke and he has never smoked ever since.A.might
B.should
C.could
D.would 【解析】根据promise可知此处是John向医生表明自己的意志。【答案】D(2)would表示过去倾向性或习惯性的动作。used to 也有这一用法，但used to即可用来表达过去的习惯性的动作，也可用来表示过去的状态。例如：
① When he was there, he ___ go to that coffee shop at the corner after work every day.A.would
B.should
C.had better
D.might ② In my opinion, life in the twenty-first century is much easier than ________.A.that used to be
B.it is used to
C.it was used to
D.it used to be 【解析】第一题would指过去习惯性的动作；第二题it 替代life, used to be 指过去的样子。【答案】A D
第四篇：情态动词教案
情态动词
【考纲解读】
情态动词与虚拟语气有千丝万缕的联系，它们往往放在一起考查。在近年高考题中，对情态动词的考查几乎每年都有纵观近几年的高考题可以看出，高考对情态动词的考查热点依次是：（1）推测和可能性；（2）“情态动词+have done”结构表示猜测或表示虚拟语气；（3）shall, should, can, must表示特定语气。尤其是对“情态动词+have done”结构的考查频率较高。试题的情景设置往往生动、真实，但考查的角度趋于细微化和综合化，有效信息较为隐蔽，这就决定了情态动词题是难题之一。情态动词题每年都考，所以本专题在高考中的重要地位是显而易见的。因而在复习中应引起高度重视，且依笔者之见，来年高考中对情态动词考查的可能性依然非常大。【知识要点】
一、情态动词的语法特征
1.情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。2.情态动词 除ought 和have 外，后面只能接不带to 的不定式。3.情态动词没有人称、数的变化，即情态动词第三人称单数不加-s。4.情态动词没有非谓语形式，即没有不定式，分词等形式。
二、情态动词的基本用法 1.比较can 和be able to 1)can could 表示能力；可能(过去时用could)，只用于现在时和过去时(could)。be able to可以用于各种时态。
They will be able to tell you the news soon.他很快就能告诉你消息了。2)只用be able to中情况： 位于助动词后； 情态动词后；
表示过去某时刻动作时； 用于句首表示条件；
表示成功地做了某事时，只能用was/were able to，不能用could。He was able to flee Europe before the war broke out.=He managed to flee Europe before the war broke out.战争爆发前，他就逃离欧洲了。
注意：could，在否定，疑问句中表示推测或怀疑。表示提出委婉的请求（注意在回答中不可用could）。
—Could I have the television on? —Yes，you can./No，you can’t.He couldn’t be a bad man.他不大可能是坏人。2.比较may和might
1)表示允许或请求；表示没有把握的推测；may 放在句首，表示祝愿。May God bless you!愿上帝保佑你！He might be at home.他有可能在家。
注意：might 表示推测时，不表示时态。只是可能性比may 小。
2)may/might as well，后面接不带to 的不定式，意为“不妨，还是……好”。You may(might)as well tell me the truth.你还是对我说实话好。3.比较have to和must
1)两词都是“必须”的意思，have to 表示客观的需要，must 表示说话人主观上的看法，即主观上的必要。
My brother was very ill，so I had to call the doctor in the middle of the night.我弟弟病得很厉害，我只得半夜里把医生请来。(客观上需要做这件事)
He said that they must work hard.他说他们必须努力工作。（主观上要做这件事）
2)have to有人称、数、时态的变化，而must只有一种形式。
He had to look after his sister yesterday.昨天他不得不照看他的妹妹。3)在否定结构中：
don’t have to 表示“不必”（可以不可以都行）；mustn’t表示“禁止” You don’t have to tell him about it.你不必把此事告诉他。You mustn’t tell him about it.你一定不要把这件事告诉他。4.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.他现在肯定在那里。He must stay there.他必须待在那里。
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。
4)must表示对过去某时正发生的事情的推测，must 后面要接不定式的完成进行式。—Why didn’t you answer my phone call?
—Well，I must have been sleeping，so I didn’t hear it.5)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。5.表示推测的用法
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.我不知道她在哪儿，她可能在武汉。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12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。6.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.飞利浦在那场车祸中有可能伤的很严重。
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”。
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.那次旅行，我穿的非常暖和，但我本没有必要那么去做。天太热了。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.我本想读那本书，但我那时太忙了。7.should 和ought to
should 和ought to 都为“应该”的意思，可用于各种人称。—Ought he to go?
—Yes.I think he ought to.表示要求，命令时，语气由 should（应该），had better最好），must（必须）渐强。8.had better表示“最好”
had better 相当于一个助动词，它只有一种形式，它后面要跟动词原形。had better do sth.最好干某事
had better not do sth.最好不干某事
had better have done sth.表示与事实相反的结果，意为“本来最好”。9.would rather表示“宁愿” would rather do 宁可干某事
would rather not do 宁可不干某事 would rather...than...宁愿……而不愿
还有would sooner，had rather，had sooner都表示“宁愿”“宁可”的意思。I would rather stay here than go home.=I would stay here rather than go home.我宁可待在这儿也不回家。
10.will和would
1)would like；would like to do=want to 想要，为固定搭配。Would you like to go with me?你想和我一块儿去吗？
2)Will you...? Would you like...?表示肯定含义的请求劝说时，疑问句 中一般用some，而不是any。
Would you like some cake?要蛋糕吗？
3)否定结构中用will，一般不用would，won’t you是一种委婉语气。Won’t you sit down?你不坐吗? 11.情态动词的回答方式
must和need相同:Yes,...must.No,...needn't/don't have to may和can could相同:Yes,...may/can/could.No,...mustn't/...'d better not/can't.shall:Yes,...can/may.No,...can't.should:Yes,...should.No,...shouldn't.will和would差不多:Yes,...do/will.No,...won't/thanks.典型例题
1）---Could I borrow your dictionary?---Yes,of course,you____.A.might B.will C.can D.should 答案C.could表示委婉的语气,并不为时态.答语中of course,表示肯定的语气,允许某人做某事时,用can和 may来表达,不能用could或might.复习：will 与you连用,用来提出要求或下命令.should与you 连用,用来提出劝告.2）---Shall I tell John about it?---No,you ___.I've told him already.A.needn't B.wouldn't C.mustn't D.shouldn't 答案A.needn't 不必,不用.wouldn't 将不,mustn't 禁止、不能.shouldn't 不应该.本题为不需要,不必的意思,应用needn't.3）---Don't forget to come to my birthday party tomorrow.---______.A.I don't B.I won't C.I can't D.I haven't 答案B.will既可当作情态动词,表请求、建议、也可作为实义动词表“意愿、意志、决心”,本题表示决心,选B.12.比较need和dare
一、need表示“需要”或“必须”，作情态动词时，仅用于否定句或疑问句中，在肯定句中一般用must,have to,ought to，或should代替。多用在否定式或疑问句中.1.Need I attend the meeting tomorrow?
我需要明天参加会议吗? 2.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。1.I need a bike to go to school.我上学需要一辆自行车。2.Do you need a dictionary? 你需要词典吗? 3.She needs a necklace.她需要一条项链。
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。
二、Dare表示“敢”，Dare作情态动词时，主要用于疑问句、否定句和条件从句中，一般不用在肯定句中。多用在否定或疑问句中。1.The little girl dare not speak in public.小女孩不敢在公众面前说话。2.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。
1.Do you dare to walk in the dark? 你敢黑夜走路吗？
2.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。
三、Dare和need常用作实义动词，有时态、人称和数的变化，所不同的是，作实义动词时，在肯定句中，dare后面通常接带to的不定式，在否定和疑问句中，dare后面可接带to或不带to的不定式。如：
I dare to swim across this river.He does not dare(to)answer.Don't you dare(to)touch it!I wondered he dare(to)say that.He needs to finish it this evening.另外need 的被动含义：need，want，require，worth（形容词）后面接doing，也 可以表示被动：need doing=need to be done Shall用于第一人称,表示征求对方的意愿.如：What shall we do this evening? 2.Shall用于第一、第三人称疑问句中,表示说话人征求对方的意见或向对方请示.如：Shall we begin our lesson? When shall he be able to leave the hospital? 3.Shall用于第二、第三人称,表示说话人给对方命令、警告、允诺或威胁.如：You shall fail if you don't work harder.（警告）He shall have the book when I finish reading.（允诺）He shall be punished.（威胁）
第五篇：高考情态动词
2000 ~ 2005 年高考题汇编
情 态 动 词
1.Sorry I'm late.I ________ have turned off the alarm clock and gone back to sleep again.（2000北京春季）（A）
A.mightB.shouldC.canD.will
2.I was really anxious about you.You_________ home without a word.（01全国）（B）
A.mustn’t leaveB.shouldn’t have leftC.couldn’t have leftD.needn’t leave
3.— Write to me when you get home.— _________（01北京春季）（C）
A．I mustB．I shouldC．I willD．I can
4.— Is John coming by train?
— He should, but he _________ not.He likes driving his car.（02全国）【Ｄ】Ａ．mustＢ．canＣ．needＤ．may
5.― I heard they went skiing in the mountains last winter.― It ______ true because there was little snow there.（02北京）（C）
A.may not beB.won’t beC.couldn’t be
D.mustn’t be 6.— I hear you’ve got a set of valuable Australian coins — Yes, certainly.（02北京春季）（B）I have a look?
A.DoB.MayC.ShallD.Should
7.A left luggage office is a place where bagsbe left for a short time, especially at a railway station.（03全国卷）（B）
A．should B．can C．must D．will
8.— The room is so dirty.we clean it?
— Of course.（03北京春季）（B）
A．Will B．Shall C．Would D．Do
9.---Who is the girl standing over there?
---Well, if you______ know, her name is Mabel.（04天津）(C)
A may B can C must D shall
10.“The interestbe divided into five parts, according to the agreement made by both sides,” declared the judge.（04重庆）(D)
A.may B.should C.must D.shall
11.---I don't mind telling you what I know.---Y.I'm not asking you for it.（04江苏）(D)
A.mustn'tB.may notC.can'tD.needn’t
12.I ____ pay Tracy a visit, but I am not sure whether I will have time this Sunday.（04浙江）(A)
A.shouldB.mightC.wouldD.could
13.---I’ll tell Mary about her new job tomorrow.---You________ her last week.（04福建）(D)
A．ought to tell B．would have told C．must tell D．should have told
14.I often see lights in that empty house.Do you think I _____ report it to the police?（04广西）（A）
A.shouldB.mayC.willD.can
15.Mr.White _____ at 8:30 for the meeting, but he didn’t’ show up.（04广西）（A）
A.should have arrivedB.should arrive
C.should have had arrived D.should be arriving
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.（04湖南）（A）
A.shan't B.might notC.needn'tD.shouldn't
17.— Excuse me.Is this the right way to the Summer Palace?
— Sorry, I am not sure.But it be.（04湖北）(A)
A．mightB．will C．mustD．can
18.---Mum, I’ve been studying English since 8 o’clock..I go out and play with Tom
for a while?
---No, I’m afraid not.Besides, it’s raining outside now.（04辽宁）(A)
A．Can’tB．Wouldn’tC．May notD．Won’t
19.Children under 12 years of age in that country ________ be under adult supervision when is a
public library.（04上海）(A)
A.mustB.mayC.canD.need
20.---Isn’t that Ann’s husband over there?
---No, it______ be him---I’m sure he doesn’t wear glasses.（04全国I）(A)
A can’t B must not C won’t D may not
21.You ______ be tired---you’ve only been working for an hour.（04全国II）(C)
A must not B won’t be C can’t D may not
22.---Tom graduated from college at a very young age.---Oh, he______ have been a very smart boy then.（04全国IV）（D）
A could B should C might D must
23.You might just as well tell the manufacturer that male customers _______ not like the design of the furniture.（04上海春季）（C）
A.mustB.shallC.mayD.need
24.He __________ have completed his work;otherwise, he wouldn’t be enjoying himself by the
seaside.(05北京卷)(B)
A.shouldB.mustC.wouldn’tD.can’t
25.He paid for a seat, when he ______ have entered free.（05山东卷）(A)
A.couldB.wouldC.mustD.need
26.---I've taken someone else's green sweater by mistake.---It ______ Harry's.He always wears green.(05广东卷)(D)
A.has to beB.will beC.mustn't beD.could be
27.— Do you know where David is? I couldn’t find him anywhere.— Well.Hehave gone far—his coat’s still here.（05湖北卷）(C)
A．shouldn’t B．mustn’t C．can’t D．wouldn’t
28.If Iplan to do anything I wanted to, I’d like to go to Tibet and travel through as much
of it as possible.（05湖北卷）(B)
A．would B．could C．had to D．ought to
29.---Lucy doesn’t mind lending you her dictionary.---She ______.I've already borrowed one.（05湖南卷）(C)
A.can'tB.mustn'tC.needn'tD.shouldn't
30.The more I think about him, the more reasons I find for loving him ___ I did.（05湖南卷）(A)
A.as much asB.as long asC.as soon asD.as far as
31.— Tom is never late for work.Why is he absent today?
— Something ________ to him.(05江西卷)(D)
A．must happenC．could have happened B．should have happened D．must have happened
32.John, look at the time._______ you play the piano at such a late hour?（05全国卷3）(B)
A．Must B．Can C．May D．Need
33.Tom, youleave all your clothes on the floor like this!（05全国卷1）(B)
A．wouldn’tB．mustn’tC．needn’tD．may not
34.There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.（05上海卷）(C)
A.mustn’tB.shan’t C.shouldn’t D.needn’t
35.The World Wide Web is sometimes jokingly called the World Wide Wait because it
_________be very slow.（05浙江卷）(D)
A．should B．mustC．willD．can
36.I was on the highway when this car went past followed by a police car.They ____ at least 150
kilometers an hour.（05重庆卷）(B)
A.should have been doingB.must have been doing
C.could have doneD.would have done
37.I _______have been more than six years old when the accident happened.（05天津卷）(B)
A.shouldn'tB.couldn'tC.mustn'tD.needn't
38.Helen ______ go on the trip with us, but she isn’t quite sure yet.（05安徽卷）(C)
A.shallB.mustC.mayD.can
39.This cake is very sweet.You __________ a lot of sugar in it.（05辽宁卷）(D)
A．should put B．could have put C．might put D．must have put
40.---The woman biologist stayed in Africa studying wild animals for 13 years before she
returned.---Oh, dear!She _______ a lot of difficulties!(05江苏卷)(D)
A.may go throughB.might go through
C.ought to have gone throughD.must have gone through
41.I have lost one of my gloves.I ________ it somewhere.（05北京春季）（B）
A.must drop B.must have dropped
C.must be dropping D.must have been dropped
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