名词单复数变化

第一篇：名词单复数变化

名词的单复数形式变化

一、最常见的就是直接在名词后面+s Boy—boys（男孩）cat—cats（猫）room—rooms（房间）horse—horses（马）tree—trees（树）rose—roses（玫瑰）

二、如果名词是以x、s、sh、ch结尾的，在名词后面+es Branch—branches（树枝）match—matches（火柴）fox—foxes（狐狸）class—classes（班级）bus—buses（公交车）Box—boxes（箱子）watch—watches（手表）dish—dishes（盘子）coach—coaches（车厢）couch—couches（沙发）

三、如果名词是以辅音加y结尾的，要变y为i加es;如果不是以辅音结尾的，就直接在y后面加上s Family—families（家庭）study—studies（学习）party—parties(派对)baby—babies（宝贝）city—cities（城市）

Boy—boys（男孩）toy—toys（玩具）way—ways（方法、路）monkey—monkeys（猴子）key—keys（钥匙）

四、当名词是以fe或f结尾的，要变fe或f为v，再加es；有的直接加s Thief—thieves（小偷）shelf—shelves（书架）leaf—leaves（树叶）half—halves（一半）Wolf—wolves（狼）life—lives（生活、生命）wife—wives（妻子）knife—knives（刀）Roof—roofs（房顶）belief—beliefs（信念）proof—proofs（证据）

五、当名词是以o结尾有生命的加es，没有生命的加s Potato—potatoes（土豆）tomato—tomatoes（西红柿）

hero—heroes（英雄）Photo—photos（相片）zoo—zoos（动物园）radio—radios（广播）piano—pianos（钢琴）

六、名词复数不规则变化

Child—children（小孩）mouse—mice（老鼠）man—men（男人）woman—women（女人）German—Germans（德国人）

Englishman—Englishmen（英国人）Frenchman---frenchmen（法国人）foot—feet（足，脚）tooth—teeth（牙齿）1）单复数同形

Deer—deer（鹿）fish—fish（鱼）Chinese—Chinese（中国人）Japanese—Japanese（日本人）2）集体名词，名词以单数的形式出现，但是实际上是指的复数 People（人们）police（警察）public（公众）

第二篇：名词单复数

一、名词

名词可以分为可数名词与不可数名词，其中可数名词具有单、复数的形式；而不可数名词没有复数形式。

1.从单数 复数，变形规则如下：

1．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds 2．以s.x.sh.ch结尾，加-es，如：bus-buses, box-boxes, watch-watches 3．以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families（家庭）, strawberry-strawberries（草莓）

4．以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives 5．不规则名词复数： man-men, woman-women, policeman（男警察）-policemen, policewoman（女警察）-policewomen, mouse-mice child（孩子）-children foot-feet,.tooth-teeth fish-fish, sheep（羊）-sheep people-people, Chinese-Chinese, Japanese-Japanese,当people后加上s时即peoples表示“民族”例如：There are 56 peoples in China.中国有56个民族。2.以下词为常为不可数名词，他们的复数形式就是他们本身。

Water(水)milk(牛奶)tea(茶)rice(米饭)orange（橙汁）juice（果汁）bread（面包）练习题 写出下列各词的复数

I _________this ___________that___________ watch _______child _______photo ________diary _________ day________ foot________ book_______ dress ______________ tooth_______ sheep ______box_______ strawberry _____________ thief _______yo-yo ______ peach______ sandwich _______________ man______ woman_______ paper_______ juice____________________ water________ milk________ rice__________ tea_______________-注意be 动词遇到名词时的运用: 单数名词用is, 复数名词全用are.名词单复数讲解及练习名词单复数

（1）名词可以分为可数名词和不可数名词，不可数名词没有单复数，一律看作单数。（2）可数名词的单数前什么时候用a，什么时候用an？ 答：以元音音标（或音素）开头的用an。以辅音音标（或音素）开头的用a。注意：我们看的是音标（或音素），而不是元音字母。

一、选择a或an或不填（用/表示）pen bag apple big apple banana orange oranges orange pen（3）可数名词的变化规则：

① 般在词尾加s，如：books，bags，fruits。加s之后的读音②以s、x、ch、sh结尾的名词加es，③以辅音字母加y结尾的名词，变y为i再加es，读[iz]；以元音字母加y结尾的名词直接在词尾加s。

② 如：baby —— babies ③ ④以f、fe结尾的名词变f、fe为ves,如：wolf [wulf] 狼——wolves wife（妻子）— life（生命）— knife —

④ ⑤以o结尾的名词加es 的有：如：zoo——zoos photo——photos（4）名词复数的不规则变化：

⑤ man—men男人 woman[wumEn]—women [5wimin] 女人tooth [tu:W]—teeth [ti:W] 牙齿 foot [fut]—feet [fi:t] 脚，英尺 goose [gu:s]—geese [gi:z] 鹅 mouse [maus] —mice [mais] 老鼠 ⑥ ②child [tFaild]—children [5tFildrEn] 孩子 ③单复同形的名词有：

⑦ chinese [5tFaini:z] 中国人Japanese [7dVApE5ni:z]日本人 sheep [Fi:p] 绵羊 deer [diE] 鹿 fish [fiF] 鱼

⑧ 注意：fish①当一条鱼讲时，单复数同形，如three fish.②当各种各样的鱼讲时，即强调鱼的种类时，要加es.⑨ 如：all kinds[kaindz] of fishes.各种各样的鱼 ③当鱼肉讲时，不可数。

一、名词复数规则

⑩ 1．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds ⑪ 2．以s.x.sh.ch结尾，加-es，如：bus-buses, box-boxes, brush-brushes,watch-watches 3．以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries 4．以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives 5．不规则名词复数：

⑫ man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice child-children ⑬ foot-feet,.tooth-teeth ⑭ fish-fish, people-people, Chinese-Chinese, Japanese-Japanese ⑮

⑯ 1.I have two_____(knife)⑰ 2.There are many _____ here.(box)⑱ 3.There are many _____ on the road.(bus)4.A few _____ are drawing on the wall.(boy)5.The _____ are playing football now.(child)⑲

兔儿们，元宵节就要到了，Happy the Lantern Festival!元宵节快乐呀，代我向你们全家问好。the Lantern Festival（元宵节）。

⑳ 今天我们一起来回顾一下，名词复数形式的变化规则； 1.大多数情况下，直接加s 21 2.以 s x sh ch结尾的名词变复数，加es 22 3.以 f fe 结尾的名词变复数，把 f fe 变为ves.23 4.以辅音字母加y 结尾的名词变复数，把y 变 i 再加es.例如，family 以辅音字母l 加y 结尾，所以复数形式为families, 24 boy也是以y 结尾的，但它是以元音字母o加y结尾的，所以复数形式为boys 5.有些以字母o 结尾的名词变复数加es,例tomatoes,potatoes 6.还有一些不规则变化的，需要同学们分清记牢。如sheep——sheep，child------children Text 1 名词（总分100分）

一、请写出下列词的复数形式,没有复数形式的请划出 /。(1’*50=50’)city _____ _zoo ______country _____ tooth ____ mouse __ boy____________ broom ___________car ____ tree ______horse ______ bus______________ fox _____ branch ____ baby _____ family _____ country _____ radio _____ photo _____ piano _____ knife _____ leaf _____ life _____ thief _____ _man _____ woman _____ child ___ foot this _____________ watch___________diary____________day____________ book____________ dress____________ sheep___________tea_____________box___________ strawberry_________ peach__________sandwich__________paper_________ juice__________water____________ milk___________ rice__________ people CD ox___________deer____________fish___________

二、单项选择(1’*10=10’)()1.The __ in our yard are very beautiful.A.cloth B.water C.flowers()2.Tom is one of the Chinese _____ in our school.A.boy B.boys C.boies()3.A cat has four ____ , doesn't it? A.foots B.feet C.feets()4.There are three ____ and five _____ in the room.A.American, Japanese B Americans, Japanese C.American, Japanese()5.Can you see nine ____ in the picture? A.fish B.book C.horse()6.The _____ has two______.A.boy;watch B.boy;watches C.boys;watch()7.The _____ are flying back to their country.A.Germany B.Germanys C.Germans()8.The girl brushes her _____ every day before he goes to bed.A.tooths B.teeth C.teeths()9.I saw many _____ in the street.A.peoples B.people C.people’s()10.The green sweater is his _________.A.brother B.brothers C.brother’s

三、选择填空(1’*10=10’)()1.They come from different ______ A.country B.countries C.a country D.countrys()2.How many ______ do you see in the picture? A.tomatos B.tomatoes C.tomato D.the tomato()3.They are______.A.woman teachers B.women teachers C.women teacher D.woman teacher()4.Would you like _______ ,please? A.two glass of water B.two glasses of water C.two glass of waters D.two glasses of waters()5.Most of ______ live in _______.A.Germans, German B.German, Germen C.Germen, Germany D.Germans, Germany()6.There are some ______ in these _______.A.knifes pencil-boxes B.knives pencils-box C.knives pencil-box D.knives pencils-boxes()7.______ like ______ by air.A.Greens, travelling B.The Green, traveling C.The Greens, travel D.The Greens, traveling()8.I wonder why ______ are interested in action films(武打片).A.the people B.people C.peoples D.the peoples()9.There is no ______ in the plate.A.apples B.oranges C.rice D.eggs()10.My uncle has three _______.A.child B.childs C.children D.childrens 四.填入所给名词的正确形式(2’*10=20’)1.I have two____________(knife)2.There are many ___________ here.(box)3.There are many ___________ on the road.(bus)4.A few ___________ are drawing on the wall.(boy)5.The ______________ are playing football now.(child)6.Please take two _______________ for me.(photo)7.I like the red ________________.(tomato)8.Would you please clean your _____________ now?(tooth)9.Do you want some _________?(milk)10.There are ten __________ _________in our school.(woman teacher)

二、练习题。<一>、写出下列名词的复数形式

1、orange

2、class

3、text

4、monkey

5、piano

6、child

7、shelf

8、bed

9、country

10、family

11、toy

12、foot

13、Japanese

14、radio

15、photo

16、army

17、tomato

18、fox

19、woman 20、knife

22、sheep <二>、选择填空

1、There on the wall.They are very beautiful.A.are photoes B.are photos C.is a photo D.is photos 2.This kind of car made in Shanghai.A.is B.are C.were D.has 3.There are four and two in the group.A.Japanese, Germen B Japaneses, Germen C.Japanese,German C.Japanese, Germans 4.That’a art book.A.an B.a C.the D are 5.The boys have got already.A.two bread B.two breads C.two pieces of bread D.two piece of bread 6.The old man wants.A.six boxes of apples B.six boxes of apple C.six box of apples D.six boxs of apples 7.There some in the river.A.is ,fish B.are, fishs C.is, fishs D.are ,fish 8.There two in the box.A.is watch B.are watches C.are watch D.is watches 9.We should clean twice a day.A.our tooth B.our tooths C.teeth D.our teeth 10.The _____ meeting room is near the reading room.A.teacher B.teacher’s C.teachers’ D.teachers 11.In Britain _____ are all painted red.A.letter boxes B.letters boxes C.letter box D.letters box 1）选择填空 1.They come from different ______ A.country B.countries C.a country D.countrys 2.How many ______ do you see in the picture? A.tomatos B.tomatoes C.tomato D.the tomato 3.They are______.A.woman teachers B.women teachers C.women teacher D.woman teacher 4.Would you like _______ ,please? A.two glass of water B.two glasses of water C.two glass of waters D.two glasses of waters 5.Most of ______ live in _______.A.Germans, German B.German, Germen C.Germen, Germany D.Germans, Germany 6.There are some ______ in these _______.A.knifes…pencil-boxes B.knives…pencils-box C.knives…pencil-box D.knives…pencils-boxes 7.______ like ______ by air.A.Greens, travelling B.The Green, traveling C.The Greens, travel D.The Greens, traveling 8.I wonder why ______ are interested in action films(武打片).A.the people B.people C.peoples D.the peoples 9.There is no ______ in the plate.A.apples B.oranges C.rice D.eggs 2）.填入所给名词的正确形式 1.I have two_____(knife)2.There are many _____ here.(box)3.There are many _____ on the road.(bus)4.A few _____ are drawing on the wall.(boy)5.The _____ are playing football now.(child)1

1．bag _______ 2．orange _______ 3．family _______ 4．wish _______ 5．shelf _______ 6．knife _______ 7．key _______ 8．baby _______ 9．tooth _______ 10．foot _______ 11．woman _______ 12．sheep _______ 13．Japanese _______ 14．potato _______ 15．radio _______ 16．child _______ 17．fish _______ 18．photo _______ 19．Frenchman _______ 20．man doctor _______ 21.watch _______ 22.bus _______ 23.sheep _______ 24.foot _______ 2）选择填空 1.They come from different ______ A.country B.countries C.a country D.countrys 2.How many ______ do you see in the picture? A.tomatos B.tomatoes C.tomato D.the tomato 3.They are______.A.woman teachers B.women teachers C.women teacher D.woman teacher 4.Would you like _______ ,please? A.two glass of water B.two glasses of water C.two glass of waters D.two glasses of waters 5.Most of ______ live in _______.A.Germans, German B.German, Germen C.Germen, Germany D.Germans, Germany 6.There are some ______ in these _______.A.knifes…pencil-boxes B.knives…pencils-box C.knives…pencil-box D.knives…pencils-boxes 7.______ like ______ by air.A.Greens, travelling B.The Green, traveling C.The Greens, travel D.The Greens, traveling 8.I wonder why ______ are interested in action films(武打片).A.the people B.people C.peoples D.the peoples 9.There is no ______ in the plate.A.apples B.oranges C.rice D.eggs 10._______ are good for our health.A.Tomatos B.Tomatoes C.Tomato 11.I like to eat cake with ______.A.cherries B.cherry C.cherrys 12.______ and ______ are not friends.A.Foxs…wolfs B.Foxes…wolfs C.Foxes…wolves 13.These are the ______ of our national ______.A.photos … heroes B.photoes … heroes C.photos … heros 14.The ______ are running on the ______.A.deer … grasses B.deers … grass C.deer … grass 15.I was so hungry and I ate two ______.A.bowls of noodle B.bowls of noodles C.bowl of noodles 3）.填入所给名词的正确形式 1.I have two_____(knife)2.There are many _____ here.(box)3.There are many _____ on the road.(bus)4.A few _____ are drawing on the wall.(boy)5.The _____ are playing football now.(child)4）请用括号中名词的复数形式填空 Look at those _______.(child)2 I can see a __________ standing near the door.(policeman)3 Do you want some ________ for dinner?(potato)4 In autumn, you can see a lot of _______ on the ground.(leaf)5 He has two _______.One is blue , the other is yellow.(box)6 Two ________ live in this building.(family)5）选择正确的词形 1 How many(radioes, radios)can you see? 2 There are 36(boys, boies)in my class.3 Look at those(sheeps, sheep).4 I don’t want(a, an)old cup.5 Give me that(box, boxes), please.6）将以下单复数句进行转换 1 This is a knife.______________________________________ 2 That is a tomato.______________________________________ 3 That child is very good._____________________________________ 4 These are mice.______________________________________ 5 Those are children.______________________________________

1、I want three white paper.A、pieces B、piece of C、pieces of

2、Do you want to drink much ? A、a milk B、milk C、milks

3、This is room.It’s very big.A、Lily and Lucy’s B、Lily’s and Lucy’s C、Lily’s and Lucy

4、We visited house yesterday.A、Tom B、Toms C、Tom’s

5、Do you want some for supper? A、a potato B、potatoes C、potatos

6、In autumn，you can see a lot of on the ground.A、leaf B、leafs C、leaves

7、My sister has two.One is old，the other is new.A、a watch B、watchs C、watches

8、Best wishes to you for Day!A、Teacher’s B、Teachers’ C、Teacher

9、Many children like to go to the Palace on Sunday.A、Children B、Children’s C、Childrens’ 第一部分：

1.There are some ________ on the hill.A.sheeps B.a sheep C.sheep D.sheepes 2.Mr Black often gives us ________ by Email.A.some good information B.some good informations C.good informations D.a good information 3.There are some new books in the school library.They are ____ books.A.child B.childrens' C.children D.children's 4.I have worn out my shoes, so I want to buy a new ________.A.pair B.one C.ones D.trousers 5.Meimei's handwriting is better than any other ______ in his class.A.students B.students C.student's D.students' 6.The hospital is a bit far from here.It's about _______.A.forty minutes's walk B.forty minute's walk C.forty minutes walk D.forty minutes' walk 7.How many _____ are there in your class ?

A.Japanese B.American C.Australian D.Canadian 8.I found my black cat in_____ room.A.Jim and Mike B.Jim and Mike's C.Jim's and Mike's D.Jim's and Mike 9.How much are the _____ ? A.bread B.meats.C.potatos D.tomatoes 10.There are many ______ in our school.A.woman teachers B.woman's teachers C.women teachers D.women's teachers 11.Three months ________ a long time for me.A.is B.are C.have D.has 12.There are ______ and ______ on the table.A.two boxes cake;four bottle of oranges B.two boxes cake;four bottle of orange C.two boxes of cakes;four bottles of orange D.two box of cakes;four bottles of oranges 第二部分

1.All the _____teachers and______students are having a meeting there.A.women …girls B.women… girl C.woman…girls D.woman…girl

2.Mr Black is a friend of _________.A.Jack's aunt's B.Jack's aunt C.Jack aunt's D.aunt's of Jack 3.This toy was made by a ____ boy.A.ten-year-old B.ten-years-old C.ten-year-older D.ten-years-older 4.The farmer raised ten _________.A.sheeps B.deers C.horse D.cows 5.She looked at us sadly with her eyes as large as_________.A.her grandmother B.her grandmother's C.her grandmothers' D.that of her grandmother 6.We have moved into a ________.A.two-storey house B.house of two storey C.two-storeys house

第三篇：名词单复数

1.We are ________(student).2.I have five ________(watch).3.Her father is a ________(doctor).4.What’s your ______(job)? 5.What are their ________(job)? 6.These _________(shelf)are not very good.7.Two ________(wolf)are in the forest.8.The ____________(housewife)are very lazy.9.I have two ________(knife).Do you need one? 10.There is a _______(hero).11.This _______(potato)is very nice.12.There is a red _________(tomato)on the table.13.We have four ________(piano)in our school.用单词的适当形式填空

1、There are four_____(apple)on the ground.2、There are five _____(bird)in the tree.3、I have three _____(eraser).4、There is one _____(cap)on the desk.5、I have two _____(pencil box).6、There are nine _____(dish)on the plate.3/4

7、There are two _____(boy)in our classroom.8、There are so many _____(leaf)on the tree.9、There are fifteen _____(knife).10、There are six _____(candy)in the in the jar.写出下列句子的复数句子。1.This is my friend.2.That is his brother.3.Is this your sister? 4.Is that her cousin? 5.What’s this?

6.This is an apple tree.7.It is an old backpack.

第四篇：名词单复数变化口诀

名词单数变复数口诀

(一)规则变化

名词单数变复数，直接加-s 占多数；

s, x, z, ch, sh 来结尾，直接加上-es；

词尾是 f 或 fe，加-s 之前先变 ve；

辅母 + y 在词尾，把 y 变 i 再加-es；

词尾字母若是 o，常用三个已足够，要加-es 请记好，hero, tomato, potato。(二)不规则变化

男人女人 a 变 e，鹅足牙 oo 变 ee；

老鼠虱婆也好记，ous 变 ic；

孩子加上 ren，鱼鹿绵羊不用变。

【解说】

1.英语名词有单数和复数的区别，单数表示“一”，复数表示“多于一。”名词由单数变复数，多数是规则的变，直接加-s，例如：book → books, girl → girls。但以-s,-z,-x,-ch,-sh 结尾的名词，变成复数时加-es, 例如：bus → buses, buzz → buzzes, box → boxes, watch → watches, brush → brushes

2.-f(e)结尾的名词单数变复数歌诀：① 树叶半数自已黄，妻子拿刀去割粮，架后窜出一只狼，就像强盗逃命忙。② 妻子持刀去宰狼，小偷吓得发了慌，躲在架后保己命，半片树叶遮目光。例如：leaf(树叶，叶子)，half(一半)，self(自已)，wife(妻子)，knife(刀子)，shelf(架子)，wolf(狼), thief(窃贼，强盗)和 life(生命)，这些名词变成复数时，都要改-f(e)为 v，再加-es。

3.-f 结尾的名词直接加-s 变复数歌诀：海湾边、屋顶上，首领奴仆两相望；谁说他们无信仰，证据写在手帕上。例如：gulf, roof, chief, serf, belief, proof, handkerchief，这些名词变复数直接加-s。

注：scarf(围巾；披风)可以先改 f 为 ve 再加-s，也可直接加-s。

4.辅音字母 + y 结尾的名词，把 y 变 i 加-es。例如：baby → babies, country → countries, family → families；而-y 前是元音时，-y 不变，直接加-s。例如：day → days, boy → boys

5.以-o 结尾的名词变复数时，多数直接加-s。例如：radio → radios, piano → pianos, kangaroo → kangaroos；有的须加-es，中学课本中有几个这样的单词，可以通过一句口诀来记忆：黑人英雄爱吃西红柿和土豆。即：Negro → Negroes, hero → heroes, tomato → tomatoes, potato → potatoes；有的以 o 结尾的名词既可加-s 也可加-es。例如：volcano(火山)→ volcanos / volcanoes 等。

6.名词复数的不规则变化需要特别记忆。例如：man → men, woman → women, goose → geese, foot → feet, tooth → teeth, mouse → mice, louse(虱子)→ lice, child → children, fish → fish, deer(鹿)→ deer, sheep → sheep 等。

7.初中课本中表示“某国人”的名词复数形式变化可通过歌诀记忆：中日不变英法变，其余-s 加后面。例如：Chinese → Chinese, Japanese → Japanese；Englishman → Englishmen, Englishwoman → Englishwomen, Frenchman → Frenchmen, Frenchwoman → Frenchwomen；American → Americans, Rusian → Rusians, Arab → Arabs, German → Germans 等。

8.不可数名词一般只有单数形式，没有复数形式。有些不可数名词可借助单位词表示一定的数量。例如：a cup of tea 一杯茶, two pieces of paper 两张纸, an item of news 一则新闻

名词单数变复数的读音变化

一般情况 加-s 清辅音后读/s/ map-maps

浊辅音和元音后读 /z/ bag-bags /car-cars

以s, sh, ch, x等结尾 加-es 读 /iz/ bus-buses/ watch-watches

以ce, se, ze,等结尾 加-s 读 /iz/ license-licenses

以辅音字母+y结尾 变y 为i再加es 读 /z/ baby---babies

第五篇：英语名词单复数变化规则

英语名词单复数变化规则

一、规则变化如下：

1)一般情况加 –s：map-maps boy-boys

2)以s,sh,ch,x结尾加 –es bus-buses watch-watches

3)以辅音字母+y结尾,变y 为i再加es baby---babies city-cities country-countries，但以y结尾的专有名词,或元音字母+y 结尾的名词变复数时,直接加s变复数.例如：two Marys the Henrys monkey---monkeys holiday---holidays 4)以o结尾的名词,变复数时：

a.以两个元音字母结尾（其一必定是o）时,加es zoo-zoos kangaroo-kangarooes

b.某些外来词 photo-photos piano-pianos c.其余情况,都发o

5）以f或fe 结尾的名词变复数时： a.加s,如：belief---beliefs roof---roofs b.去f,fe 加ves,如：half---halves

c.上述a和b两种方法均可,如handkerchief:handkerchiefs / handkerchieves.二、不规则变化（需额外记忆）

1）child---children foot---feet tooth---teeth mouse---mice man---men woman---women

注意：由一个词加 man 或 woman构成的合成词,其复数形式也是-men 和-women,如an Englishman,two Englishmen.但German不是合成词,故复数形式为Germans；Bowman是姓,其复数是the Bowmans.2）

单

复

同

形,如deer,sheep,fish,Chinese,Japanese ,li,jin,yuan,two li,three mu,four jin等.但除人民币的元、角、分外,美元、英镑、法郎等都有复数形式.如：a dollar,two dollars;a meter,two meters.3）集体名词,以单数形式出现,但实为复数.例如：people police cattle 等本身就是复数,不能说 a people,a police,a cattle,但可以说a person,a policeman,a head of cattle.4）以s结尾,仍为单数的名词,如：

a.maths,politics,physics等学科名词,一般是不可数名词,为单数.b.news 为不可数名词.c.the United States,the United Nations 应视为单数.The United Nations was organized in 1945.联合国是1945年组建起来的.d.以复数形式出现的书名,剧名,报纸,杂志名,也可视为单数.例如： “The Arabian Nights” is a very interesting story-book.《一千零一夜》是一本非常有趣的故事书.5）表示由两部分构成的东西,如：glasses（眼镜）trousers,clothes等,若表达具体数目,要借助数量词 pair（对,双）;suit（套）;a pair of glasses;two pairs of trousers等.6）另外还有一些名词,其复数形式有时可表示特别意思,如：goods货物,waters水域,fishes（各种）鱼.7）有些表示生物的名词,其复数形式与单数相同.如：fish-fish,sheep-sheep,deer-deer.这类名词还有aircraft,means等