最新小学英语名词单复数变化及习题

名词的复数名词单数变复数练习题(一）1、orange2、class3、monkey4、piano5、child6、shelf7、bed8、country9、family10、toy11、foot12、radio13、photo14、tomato15、woman16、knife17、sheep18、ship19、dish20、mouse参考答案：1.oranges2.classes3.monkeys4.pianos5.children6.shelves7.beds8.countries9.families10.toys11.feet12.radios 13.photos14.tomatoes15.women16.knives 17.sheep18.ships19.dishes20.mice1、class2、monkey3、shelf4、country5、toy6、foot7、sheep8、leaf9、lady10、brush11、goose12、German13、fireman14、story15、peach16、mouse17、fox18、dish19、crayon20、library参考答案：1.classes2.monkeys3.shelves4.countries5.toys6.feet7.sheep8.leavesdies10.brushes11.geese12.Germans 13.firemen14.stories15.peaches16.mice17.foxes18.dishes19.crayons20.libraries1、orange2、class3、text4、monkey5、piano6、child7、shelf8、bed9、country10、family11、toy12、foot13、Japanese14、radio15、photo16、army17、tomato18、fox19、woman20、knife参考答案：1.oranges2.classes3.texts4.monkeys5.pianos6.children7.shelves8.beds9.countries10.families11.toys12.feet 13.Japanese14.radios15.photos16.armies 17.tomatoes18.foxes19.women20.knives1、son2、friend3、house4、village5、map6、bag7、exercise8、brush9、family10、bus11、city12、box13、baby14、class15、factory16、glass17、dictionary18、watch19、woman20、match参考答案：1.sons2.friends3.houses4.villages5.maps6.bags7.exercises8.brushes9.families10.busses11.cities12.boxes 13.babies14.classes15.factories16.glasses 17dictionaries18.watches19.women20.matches1、lion2、fish3、deer4、uncle5、candy6、baby7、toy8、car9、cup10、bottle11、lake12、hill13、wall14、stamp15、Chinese16、festival17、mountain18、floor19、noodle20、fruit参考答案：1.lions2.fish3.deer4.uncles5.candies6.babies7.toys8.carskes12.hills 13.walls14.stamps15.Chinese16.festivals 17.mountains18.floors19.noodles20.fruits1.I can see five（crayon）.2.Look at these（man）.3.I see some（child）.4.A:Are these your（pencil case）?B:Yes,they are.5.There are three（library）in our school.6.I have two(knife).7.There are many(box)here.8.There are many(bus)on the road.9.A few(boy)are drawing on the wall.10.The(child)are playing football now.11.Please take two(photo)for me.12.I like the red.(tomato)13.Would you please clean your now?(tooth)14.Do you want some?(milk)15.There are ten(woman teacher)in our school.参考答案：1.crayons 3.children2.men 4.pencil cases 5.libraries 6.knives7.boxes8.buses9.boys10.childrenk15.women teachers1.I have two(knife)______.2.There are many(box)______here.3.There are many(bus)______on the road.4.A few(boy)_____are drawing on the wall.5.The(child)____are playing football now.6.Look at those______.(sheep)7.I can see a(policeman)____standing near the door.8.Do you want some(potato)____for dinner?9.He has two_____(car).One is blue,the other is yellow.10.Two(family)____live in this building.参考答案：1.knives2.boxes3.buses4.boys5.children6.sheep7.policeman8.potatoes9.cars10.families知识点：英语中的可数名词有单数和复数之分,复数形式的变化规则如下：一、可数名词复数的规则变化。

名词单复数变形及练习第一篇：名词单复数变形及练习名词单复数变化规则1、规则变化1)一般情况直接加s，如photo→photos car→cars2)以s,sh,ch,x等结尾的词加es，如bus→buses watch→watches注意：四个以o结尾加es变复数的单词：黑人negroes,英雄heroes,土豆potatoes,西红柿tomatoes 口诀：“黑人英雄爱吃土豆西红柿”3)以ce,se,ze,(d)ge等结尾的词加s，如license→licenses4)以辅音字母+y 结尾的词变y 为i再加es，如baby→babies注意：以元音字母+y结尾的词直接加s变复数，如boy→boys;key→keys5）以“f”,“fe”结尾，把f或fe改成 v + es，如wife→wives2、不规则变化1)child→children foot→feet tooth→teeth mouse→mice man→men woman→wome n注意：与man 和woman构成的合成词，其复数形式也是-men 和-women。

2）单复同形如deer，sheep，fish，Chinese，Japanese 但除人民币元、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； a pound，two pounds3）集体名词，以单数形式出现，但实为复数。

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（一头牛）。

the English，the British，the French，the Chinese，the Japanese等名词，表示国民总称时，作复数用。

如： The Chinese are industries and brave.中国人民是勤劳勇敢的。

小学三年级英语名词单复数变化单选题30题1. I see many ______ in the zoo.A. monkeyB. monkeysC. monkeiesD. monkeyes答案：B。

本题考查名词复数形式。

monkey 的复数是monkeys，A 选项是单数形式，C 和D 选项的复数形式错误，所以选B。

2. There are some ______ on the table.A. appleB. applesC. applessD. applees答案：B。

apple 的复数是apples，A 选项是单数，C 和D 选项的复数形式不对，所以选B。

3. My sister likes ______ very much.A. strawberryB. strawberriesC. strawberrysD. strawberres答案：B。

strawberry 的复数是strawberries，A 选项是单数，C 和D 选项的复数形式错误，所以选B。

A. catB. catsC. cattsD. cates答案：A。

本题中根据“is”可知要用单数，B 选项是复数，C 和D 选项的形式错误，所以选A。

5. I have two ______.A. dogB. dogsC. dogesD. doggys答案：B。

dog 的复数是dogs，A 选项是单数，C 选项形式错误，D 选项不是dog 的正确复数形式，所以选B。

6. I have two _____.A. toy carB. toy carsC. toys carD. toys cars答案：B。

本题考查名词复数形式。

“two”表示两个，其后接名词复数，“toy car”的复数形式是“toy cars”，A 选项是单数形式，C 和D 选项的表述不正确，所以选B。

A. penB. pensC. a penD. an pen答案：B。

“many”修饰可数名词复数，“pen”的复数是“pens”，A 选项是单数，C 选项“a pen”是单数，D 选项“an pen”表述错误，应是“a pen”，所以选B。

小学英语可数名词变复数形式的规则1一般情况，在词尾加-s.desk---desks 书桌girl---girls 女孩boy---boys 男孩pen---pens 钢笔2以-s,-x,-ch,-sh结尾的词，在词尾加--esbus---buses 公共汽车box--boxes箱子brush--brushes 刷子watch--watches 手表3以辅音字母加-y结尾的词，变y为i，加-es baby-babies 婴儿family--families家庭4以-f或-fe结尾的词，变f或fe为v，再加-esknife---knives刀leaf---leaves树叶5以辅音字母加-o结尾的词，有生命的，在词尾加-es；tomato---tomatoes西红柿potato--potatoes马铃薯没有生命的，在词尾加-sphoto---photos 照片6可数名词变为复数形式的不规则变化如下：foot---feet脚mouse---mice老鼠goose---geese鹅child---children孩子ox---oxen公牛m a n---m e n男人wom a n---wom e n女人Chinese--Chinese中国人deer---deer鹿fish---fish鱼sheep---sheep绵羊<一>、写出下列名词的复数形式1、orange oranges2、class classes3、text texts4、monkey monkeys5、piano pianoes5、child 7.shelf8、bed 9、country10.Family 11、toy 12、foot 13、Japanese 14、radio 15、photo 16、army 17、tomato 18、fox 19、woman 20、knife 22、sheep1)、选择填空1、There on the wall .They are very beautiful.A.are photoesB. are photosC. is a photoD. is photos2. This kind of car made in Shanghai.A. is B .are C .were D .has3. There are four and two in the group.A. Japanese, Germen B Japaneses, GermenC. Japanese,GermanD.Japanese, Germans4. That’a art book.A. anB. aC. the D are5. The boys have got already.A. two breadB. two breadsC. two pieces of breadD. two piece of bread6. The old man wants .A. six boxes of applesB. six boxes of appleC. six box of applesD. six boxs of apples7. There some in the river.A. is ,fishB. are, fishsC. is, fishsD. are ,fish8. There two in the box.A. is watchB. are watchesC. are watchD. is watches9. We should clean twice a day.A .our tooth B. our toothsC.teethD.our teeth10.The _____ meeting room is near the reading room.A.teacherB.teacher’sC.teachers’D.teachers11. In Britain _____ are all painted red.A.letter boxesB.letters boxesC.letter boxD.letters box2）选择填空1.They come from different ______A. countryB. countriesC. a countryD. countrys2.How many ______ do you see in the picture?A. tomatosB. tomatoesC. tomatoD. the tomato3. They are______.A . woman teachers B. women teachersB.women teacher D. woman teacher4. Would you like _______ ,please?A. two glass of waterB. two glasses of waterC.C. two glass of watersD.two glasses of waters5.Most of ______ live in _______.A.Germans, GermanB. German, GermenB.Germen, Germany D. Germans, Germany6.There are some ______ in these _______.A.knifes pencil-boxesB.knives pencils-boxC.knives pencil-boxD.knives pencils-boxes7. ______ like ______ by air.A. Greens, travellingB. The Green, travelingC. The Greens, travelD. The Greens, traveling8.I wonder why ______ are interested in action films (武打片).A.the peopleB. peopleB.peoples D. the peoples9.There is no ______ in the plate.A.applesB. orangesC. riceD. eggs3).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)写出下列名词的复数形式。

五年级英语名词单复数变化练习题40题1.There are many ______ in the zoo.A.monkeysB.monkeyC.monkeiesD.monkeyes答案：A。

“monkey”的复数形式是“monkeys”，一般情况下，以“y”结尾的名词，且“y”前是辅音字母时，变“y”为“i”再加“es”，但“monkey”不符合这种情况，直接加“s”。

B 选项是单数形式；C、D 选项拼写错误。

2.I have two ______.A.appleB.applesC.applesesD.applees答案：B。

“apple”的复数形式是“apples”，一般情况下，直接在名词后加“s”。

A 选项是单数形式；C、D 选项拼写错误。

3.There is a ______ on the desk.A.pencilB.pencilsC.pencilesD.pencileses名词后加“s”。

B 选项是复数形式，不符合题干中的“a”；C、D 选项拼写错误。

4.She has three ______.A.eraserB.erasersC.eraseresD.erasereses答案：B。

“eraser”的复数形式是“erasers”，一般情况下，直接在名词后加“s”。

A 选项是单数形式；C、D 选项拼写错误。

5.There are some ______ in the basket.A.pearB.pearsC.pearesD.peareses答案：B。

“pear”的复数形式是“pears”，一般情况下，直接在名词后加“s”。

A 选项是单数形式；C、D 选项拼写错误。

6.I see four ______.A.bananaB.bananasC.bananasesD.bananaseses名词后加“s”。

A 选项是单数形式；C、D 选项拼写错误。

7.There is an ______ in the tree.A.apple treeB.apple treesC.apples treeD.apples trees答案：A。

名词单复数练习及答案一、名词单数变复数规则练习在英语中，将名词从单数变成复数通常需要根据不同的规则进行变化。

以下是一些常见的名词单数变复数的规则：1. 一般在名词末尾加s例：book → books2. 以s, x, ch, sh结尾的名词，在末尾加es例：bus → buses3. 以辅音字母+y结尾的名词，将y变成i，再加es例：baby → babies4. 以辅音字母+o结尾的名词，在末尾加es例：potato → potatoes5. 以辅音字母+f或fe结尾的名词，将f或fe变成v，再加es例：leaf → leaves现在，请你根据以上规则将下面的名词单数变成复数形式：1. cat2. house3. toy5. brush二、名词复数变单数规则练习除了将名词从单数变成复数外，有时候也需要将名词从复数变成单数。

以下是一些常见的名词复数变单数的规则：1. 一般在名词末尾去掉s例：dogs → dog2. 以s, x, ch, sh结尾的名词，去掉es例：watches → watch3. 以辅音字母+y结尾的名词，将y变成i，再去掉es例：butterflies → butterfly4. 以辅音字母+o结尾的名词，去掉es例：potatoes → potato5. 以辅音字母+f或fe结尾的名词，将f或fe变成v，再去掉es例：leaves → leaf现在，请你根据以上规则将下面的名词复数变成单数形式：1. books2. houses4. boxes5. brushes三、名词单复数变化答案以下是名词单复数的答案：一、名词单数变复数规则练习答案1. cats2. houses3. toys4. boxes5. brushes二、名词复数变单数规则练习答案1. book2. house3. toy4. box5. brush通过以上练习，希望你能更加熟练地掌握名词单复数的变化规则，提高你的英语写作能力。

名词单复数变化（一）可数名词单复数规则变化一、理论知识:1.一般情况下，名词变复数直接加____________如: book ______ _______ car _______ _______ chair _______ _____friend ______ ______ desk ______ _____ girl ______ ______2.以___________、___________、___________、___________ 结尾的名词加_es 变成复数如: bus ________ ________ watch ________ ________brush ________ ________ box ________ ________bush ________ ________ fox ________ ________3.以f或fe 结尾的名词, 变复数为, 变__________为__________ 再加__________如:wife ______ ______ shelf ______ _______ wolf ______ ______leaf ________ ________ life ________ ________口诀: 小偷的妻子一生中只注意架子上的小刀, 树叶和自己的半匹狼thief wife life shelf knife, leaf, self half wolf 4.以“辅音字母+y”结尾的, 名词, 变复数为: ________________________________如: factory ________ ________ country ________ ________city ________ ________ story ________ ________5.以“原音字母+y”结尾的名词, 变复数为: ________________________________如: boy _______ ______ day ______ ______ toy ______ ______6.以字母“o”结尾的名词, 一般情况下变复数加________________如: photo ______ ______ zoo ______ ______ radio ______ ______7.有些以“o”结尾的名词, 变复数加________________如: potato _______ _______ tomato ________ ________ hero ________ ________Negro ________ ________ echo ________ ________（二）可数名词的不规则变化一、理论知识1.变单词本身字母如:foot ________ ________ tooth ________ ________ goose ________ ________ man ________ ________ woman ________ ________ mouse ________ ________ child ________ ________ ox ________ ________2.单复数同行sheep ________ ________ deer ________ ________ fish ________ ________ Chinese________ ________ Japanese ________ ________ Swiss ________ ________ 口诀: 中国人, 日本人还有瑞士人都喜欢吃羊, 鹿, 鱼Chinese Japanese Swiss sheep deer fish4.国人的变化(1) 中、日不变Chinese___________ ___________ Japanese___________ ___________(2) 英、法a 变eEnglishman ___________ ___________ Frenchman ___________ ___________ (3) 其他一律加sGerman ___________ ___________ American ___________ ___________Australian ___________ ___________ Canadian ___________ ___________ (口诀: 中日不变, 英法变, 其他一律加s)5.以下单词是集体名词, 本身就只有复数的形式people 人们glasses 眼镜clothes 衣服police 警察trousers 裤子scissors 剪刀family 家人thanks 感谢compass 圆规shoes 鞋子socks 袜子写出下列名词的复数形式, 并写出各词的汉语意思watch ______ ______boy______ ______shoe______ ______student ______ ______ girl ______ ______ leg ______ ______ cup ______ ______ train ______ ______ shelf ______ ______ fox ______ ______ brush ______ ______ class ______ ______ map ______ ______ roof ______ ______ tool ______ ______ tree ______ ______ potato ______ ______ piano ______ ______ holiday ______ ______ Negro ______ ______ chief ______ ______ mouth ______ ______ piece ______ ______ year ______ ______ way ______ ______ body ______ ______ banana ______ ______ watch ______ ______ factory ______ ______ library ______ ______ chair ______ ______ tomato ______ ______ brush ______ ______ monkey ______ ______ dress ______ ______ match ______ ______ orange ______ ______ wife ______ ______ belief ______ ______ party ______ ______ Chinese ______ ______ hero ______ ______ park ______ ______ railway ______ ______ word ______ ______ reef ______ ______ Frenchman ______ ______ sheep ______ ______ tooth ______ ______ photo ______ ______ university ______ ______ brief ______ ______ glass ______ ______ teacher ______ ______ hand ______ ______ foot ______ ______ mouse ______ ______ shirt ______ ______ apple ______ ______ deer ______ ______German ______ ______ Englishman ______ ______ fish ______ ______ Negro ______ ______ family ______ ______ skirt ______ ______ piano ______ ______ month ______ ______ serf ______ ______ giraffe ______ ______ radio ______ ______ chimney ______ ______ train ______ ______ station ______ ______ house ______ ______ classroom ______ ______ office ______ ______ monkey ______ ______ baby ______ ______ leaf ______ ______ kite ______ ______ knife ______ ______ proof ______ ______ reef ______ ______ story ______ ______ thief ______ ______ brother ______ ______名词单复数变化练习用所给词的适当形式填空1.My parents are all ___________ (teacher).2.The desk has four ___________ (leg).3.There are many ___________ (sheep) on the hill.4.A dog has four ___________ (foot).5.There are twelve ___________ (month) in a year and seven ___________ (day) in a week.6.How many ___________ (tomato) are there in the fridge?7.There are three ___________ (apple) and two ___________ (egg) on the plate.8.These black ___________ (mouse) look terrible.9.There are four ___________ (person) in my family.10.We are ___________ (Chinese).They are ___________ (American).11.The little boy has four ___________ (tooth).12.Lily and Lucy are ___________ (Japanese).13.Why do you bring two ___________ (knife) with you?14.Jim and Mary are from different ___________ (country), they are four ___________ (class) from Monday to Friday.15.There are many ___________ (tree) on either side of the street.16.There are fifty ___________ (state) in the USA.17.Can you another two ___________ (cake)？18.How many ___________ (family) are there in the village?19.Seven ___________ (student) are taking ___________ (photo) over there.20.I have four ___________ (watch).21.The ___________ (German) are going to Paris.22.These ___________ (child) are ___________ (Englishman).23.Shanghai is one of the biggest ___________ (city) in China.24.The ___________ (leaf) turn yellow in autumn.25.There are four ___________ (season) in a year and three ___________ (month) in a season.26.There are thirty ___________ (boy) and twenty ___________ (girl) in the class.27.I have one _________ (mouth), two ________ (eye), and two _________ (foot).28.The ___________ (policeman) are in the station.29.We took many ___________ (photo) in the park.30.There are not many ___________ (fish) in the river.31.I want to be a ___________ (scientist) in the future.32.We have many ___________ (book) on the desk.33.This pair of ___________ (glass) is too small for me.34.Please give my best ___________ (wish) for your parents.35.These ___________ (photo) are old.36.Those ___________ (child) are lovely.37.The ___________ (hero) are ___________ (German).38.There are two ___________ (factory) near my home and two thirds of the workers are ___________ (Chinese).39.The ten ___________ (question) are hard to work out.40.There are twenty-four ___________ (hour) in a day.41.The two ___________ (man) are ___________ (Englishman).42.There are many ___________ (sheep) and ___________ (deer) on the grass.43.Here are three ___________ (goose).There are many ___________ (ox).44.I am thirsty.Please give me four ___________ (glass) of drink.45.There are a lot of ___________ (bus) in the street.46.My parents have two ___________ (child).47.The old man’s sisters are ___________ (Australian).48.The little girl has two ___________ (pen).49.I received two ___________ (letter) yesterday.50.They have many ___________ (child), but none of them likes to wash ___________ (dish).51.Six of them are ___________ (worker), but Mr.Liu and Mr.Li are ___________ (postman).52.How many ___________ (radio) are there in the room?53.This passage has four ___________ (part).54.The two ___________ (boy) are my ___________ (friend).55.These ___________ (student) are our ___________ (classmate).最好的friend 朋友from 来自question 问题补充词汇:bestbig 大的small 小的police 警察fifty 五十Monday 星期一Friday 星期五side 边either 两者之一letter 信knife 小刀twelve 十二person 人future 将来scientist 科学家work out 算出lovely 可爱的postman 邮递员part 部分radio 收音机classmate 同学parents 父母亲bring 带来station 车站factory 工厂leg 腿different 不同的leaf 树叶third 第三hill 小山country 国家yellow 黄色的grass 草地these 这些cake 蛋糕autumn 秋天thirsty 渴的those 那些state 州season 季节receive 收到fridge 冰箱village 村庄thirty 三十yesterday 昨天。

四年级英语名词单复数变化练习30题含答案解析1. There is a _____ (book/books) on the desk.A. bookB. books答案：A。

解析：“book”是可数名词，这里表示一本书，用单数形式，“a”后面接可数名词单数。

容易出错的点在于如果不理解“a”的用法，可能会误选“books”这个复数形式。

2. I see two _____ (cat/cats) in the yard.A. catB. cats答案：B。

解析：“cat”是可数名词，前面有“two”表示两只，可数名词复数形式一般在词尾加“s”，所以要用“cats”。

容易混淆的是如果没有掌握数量词与名词单复数的搭配，可能会选“cat”。

3. There are some _____ (leaf/leaves) on the ground.A. leafB. leaves答案：B。

解析：“leaf”的复数形式是不规则变化，需要把“f”变成“v”再加“es”，这里“some”表示一些，后面要用复数形式。

容易出错的地方在于如果按照一般的加“s”规则就会选错。

4. My mother bought a lot of _____ (apple/apples).A. appleB. apples答案：B。

解析：“apple”是可数名词，“a lot of”表示许多，后面接可数名词复数形式，直接在词尾加“s”。

如果不清楚“a lot of”后接名词的形式就容易选错。

5. I have a _____ (pencil/pencils) in my bag.A. pencilB. pencils答案：A。

解析：“a”表示一个，后面接可数名词单数形式，“pencil”是可数名词，所以要用单数。

容易犯错的是没有注意到“a”这个限定词。

6. There are three _____ (box/boxes) here.A. boxB. boxes答案：B。

三年级名词单复数题目60道一、单数变复数的基础题目（20道）1. 写出“book”的复数形式。

答案：books。

解析：一般情况下，名词单数变复数，直接在词尾加 -s。

book是规则变化的名词，所以复数是books。

2. 把“pen”变成复数。

答案：pens。

解析：pen也是规则变化，直接加 -s构成复数形式。

3. “ruler”的复数是什么？答案：rulers。

解析：同样遵循一般规则，在词尾加 -s。

4. 将“pencil”变为复数。

答案：pencils。

解析：直接在词尾加 -s得到复数形式。

5. 写出“eraser”的复数形式。

答案：erasers。

解析：按常规在词尾加 -s。

6. “crayon”的复数是？答案：crayons。

解析：直接加 -s。

7. 把“desk”变成复数。

答案：desks。

解析：desk是规则名词，加 -s变为复数。

8. “chair”的复数怎么写？答案：chairs。

解析：在词尾加 -s。

9. 写出“box”的复数形式。

答案：boxes。

解析：以x结尾的名词，变复数时要加 -es。

10. 将“bus”变为复数。

答案：buses。

解析：以s结尾的名词，变复数加 -es。

11. “apple”的复数是什么？答案：apples。

解析：直接加 -s。

12. 把“banana”变成复数。

答案：bananas。

解析：直接加 -s。

13. 写出“pear”的复数形式。

答案：pears。

解析：直接加 -s。

14. 将“orange”变为复数。

答案：oranges。

解析：直接加 -s。

15. “cat”的复数是？答案：cats。

解析：直接加 -s。

16. 把“dog”变成复数。

答案：dogs。

解析：直接加 -s。

17. 写出“bird”的复数形式。

答案：birds。

解析：直接加 -s。

18. 将“fish”变为复数（表示鱼的种类时）。

答案：fishes。

解析：当fish表示鱼的种类时，复数形式是fishes；如果表示鱼肉或者同一种鱼的多条，复数还是fish。

名词单数变复数规则规则变化1）一般情况下加-s如book--books（书）desk--desks（书桌）2）以s ,x ,ch , sh结尾加-es如box--boxes（盒子）bus--buses(公共汽车)brush--brushes watch--watches注意①以th 结尾加-s, month--months②stomach--stomachs3)以辅音字母+结尾，变y为i再加- es。

如city--cities(城市) country--countries(国家)baby-babies婴儿family--families家庭注意以元音+y，直接加s。

如：day--days(天)，boy--boys(男孩)4)以f或fe结尾，复数变f或fe 为v再加-es如knife-knives(书) , half-halves(一半) leaf---leaves树叶(thief ,wife ,life ,shelf ,knife ,leaf ,self ,half ,wolf)注意①有少数词后直接加s，如roof-roofs (屋顶)5)以o结尾分2类(1)o结尾的加-es如tomato-tomatoes(西红杮) potato-potatoes(土豆) hero-heroes（英雄）(2) o结尾名词的加-s如piano-pianos (钢琴), zoo-zoos(动物园)photo-photos (照片), kangaroo-kangaroos(袋鼠)kilo-kilos(千克)注意zero 两种方式都可：zero-zeros或zeroes(零)不规则变化1) 元音字母发变化。

如man--men(男人) ，woman--women(妇女)tooth--teeth(牙齿) ，foot--feet(脚)mouse--mice(老鼠) ，policeman--policemen(警察)policewoman--policewomen(女警察)2) 词尾发生变化。