名词单复数变化规则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. 从单数到复数，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-knives5.以o结尾分两类，有生命的加es,无生命的加s。

6．不规则名词复数：man—men男人 woman—women 女人mouse—mice老鼠tooth—teeth牙齿foot—feet脚goose—geese 鹅policeman（男警察）-policemen, policewoman（女警察）-policewomen, child —children 孩子单复同形的名词有：chinese 中国人Japanese日本人people-peoplesheep 绵羊 deer 鹿fish鱼注意：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.如：all kinds[kaindz] of fishes .各种各样的鱼③当鱼肉讲时，不可数。

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.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）练习题一、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_______________-二、写出下列各词的复数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)三、写出下列名词的复数形式1、orange2、class3、text4、monkey5、piano6、child7、shelf8、bed9、country 10、family __ 11、toy 12、foot 13、Japanese 14、radio 15、photo 16、army 17、tomato 18、fox 19、woman 20、knife21、sheep四、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,German C.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 box12. They come from different ______A. countryB. countriesC. a countryD. countrys13. How many ______ do you see in the picture?A. tomatosB. tomatoesC. tomatoD. the tomato14. They are______.A . woman teachers B. women teachersC. women teacherD. woman teacher15. Would you like _______ ,please?A. two glass of waterB. two glasses of waterC. two glass of watersD. two glasses of waters16. Most of ______ live in _______.A. Germans, GermanB. German, GermenC. Germen, GermanyD. Germans, Germany17. There are some ______ in these _______.A.knifes…pencil-boxesB.knives…pencils-boxC.knives…pencil-boxD.knives…pencils-boxes18. ______ like ______ by air.A. Greens, travellingB. The Green, travelingC. The Greens, travelD. The Greens, traveling19. I wonder why ______ are interested in action films(武打片).A. the peopleB. peopleC. peoplesD. the peoples20. There is no ______ in the plate.A. applesB. orangesC. riceD. eggs21. _______ are good for our health.A. TomatosB. TomatoesC. Tomato22. I like to eat cake with ______.A. cherriesB. cherryC.cherrys23. ______ and ______ are not friends.A. Foxs…wolfsB. Foxes…wolfsC. Foxes…wolves24. These are the ______ of our national ______.A. photos … heroesB. photoes … heroesC. phot os … heros25. The ______ are running on the ______.A. deer … grassesB. deers … grassC. deer … grass26. I was so hungry and I ate two ______.A. bowls of noodleB. bowls of noodlesC. bowl of noodles五、请用括号中名词的复数形式填空1 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 )六、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.七、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. ______________________________________八、单项选择（稍难）1. There are some ________ on the hill.A. sheepsB. a sheepC. sheepD. sheepes2. Mr Black often gives us ________ by Email.A. some good informationB. some good informationsC. good informationsD. a good information3. There are some new books in the school library. They are ____ books.A. childB. childrens'C. childrenD. children's4. I have worn out my shoes, so I want to buy a new ________ .A. pairB. oneC. onesD. trousers5. Meimei's handwriting is better than any other ______ in his class.A. studentsB. studentsC. student'sD. students'6. The hospital is a bit far from here. It's about _______ .A. forty minutes's walkB. forty minute's walkC. forty minutes walkD. forty minutes' walk7. How many _____ are there in your class ?A. JapaneseB. AmericanC. AustralianD. Canadian8. I found my black cat in_____ room.A. Jim and MikeB. Jim and Mike'sC. Jim's and Mike'sD. Jim's and Mike9. How much are the _____ ?A. breadB. meats.C. potatosD. tomatoes10. There are many ______ in our school.A. woman teachersB. woman's teachersC. women teachersD. women's teachers11. Three months ________ a long time for me.A. isB. areC. haveD. has12. There are ______ and ______ on the table.A. two boxes cake; four bottle of orangesB. two boxes cake; four bottle of orangeC. two boxes of cakes; four bottles of orangeD. two box of cakes; four bottles of oranges。