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复数是几年级上册的课程(三年级数学什么是复数)

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复数是几年级上册的课程,三年级数学什么是复数(1)

英语可数名词单数变复数变化规则:

1.一般名词复数是在名词后面加上“s”,如map→maps,bag→bags,book-books等;

2.以s,x,sh,ch结尾的词加“es”,如bus→buses,watch→watches,box-boxes等;

3.以y结尾的分为两种:

1》以辅音字母+y结尾的词,变y为i加es,如baby→babies,family-families, study-studies等

2》以元音字母+y结尾的名词变复数时,直接加s变复数,如:

monkey→monkeys,

holiday→holidays,

storey→storeys(楼层);

¥4以f或fe结尾的名词变复数时,去掉f,fe加ves的名词有:

half→halves

knife→knives

leaf→leaves

wolf→wolves

wife→wives

life→lives

thief→thieves

5.以o结尾的名词变复数时:

a)加s的名词有(无生命):photo→photos,piano→pianos,radio→radios

b)加es的名词有(有生命):

即“黑人英雄爱吃土豆西红柿” es:

黑人 negro→negroes

英雄 hero→heroes

土豆 potato→potatoes

西红柿 tomato→tomatoes

名词单数变复数的练习题

一、写出下列名词的复数形式

1、orange__________

2、class ___________

3、monkey__________

4、piano___________

5、child ___________

6、shelf ____________

7、bed____________

8、country__________

9、family___________

10、toy__________

11、foot __________

12、radio__________

13、photo__________

14、tomato___________

15、woman___________

16、knife________

17、sheep__________

18、ship__________

19、dish___________

20、mouse___________

二、用所给的单词的复数的正确形式填空:

1> There arethree_____________(chair) in the classroom.

2> These_____________(tomato) are red.

3> My brother looks aftertwo_____________ (baby)

4> My father likes toeat_____________ (potato).

5> Chinese_____________(people)like to eat noodles.

6> I have a lot of_____________ (toy) in my bedroom.

7> My mother wash_____________(dish) in the kitchen.

8> I have two_____________(pencil-box).

9> There aresome_____________ (bus)in the street.

10> Monster haseight_____________ (foot).

三、选择填空

( )1.I can see three ________ in the zoo.

A. monkeys B. monkeys C. monkey

( )2. The pig has four ________.

A. foot B. feet C. foots

( )3. My two brothers are ________.

A. policeman B.policemans C. policemen

( )4. I can see ten _____ in the picture.

A. sheep B. dog C. pig

( )5. The _____ has three_____.

A. boys, watches B.boy, watch C.boy, watches

( )6. Can you see _______on the plate?

A. bread B. breads C. breades

( )7. The girl often brushes her_____ beforeshe goes to bed.

A. tooth B. tooths C. teeth

( )8. Mr. Black often drink some_________.

A. milk B. milks C.milkes

( )9. There are some _____on the floor.

A. child B. man C. books

( )10. Lucy will has some _______.

A. photo B. photos C. photoes

( )11. I am drinking two ________.

A. cups of water B. cup of water C. cups of water s

( )12. The cat eats two _______ on Monday.

A. mouses B. miceC. mouse

( )13. I need a pen and some _____.

A. books B. deskC. chair

( )14. There are______inthe room.

A. photos B. photoes C. photo

( )15. There is some_____in theriver.

A. fish B.fishes C. fishs

( )16. There___two___in the box.

A. is watch B. are watches C. are watch

( )17. We have to clean___every day.

  1. A.our tooth B. ourtooths C. our teeth

( )18. My _____ room is next to the readingroom.

A.teacher B.teacher’s C.teachers

( )19.Tom and Jim are ______.

A.friends B.friend C.brother

( )20.How many _____do they have?

A.picture B.pictures C.a picture

四写出下列名词的复数形式。

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_______

五选择填空

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. womenteacher 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. TheGreens, travel D. The Greens,traveling

8. Iwonder why ______ are interested in action films(武打片).

A. the people B. peopleC. 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. ______ and ______ are not friends.

A.Foxs…wolfs B. Foxes…wolfs C.Foxes…wolves

12. These are the ______ of our national______.

A. photos … heroes B. photoes … heroes C. photos … heros

13. The ______ are running on the ______.

A. deer … grasses B. deers … grass C. deer … grass

14. I was so hungry and I ate two ______.

A. bowls of noodle B. bowls of noodles C. bowl of noodles

六填入所给名词的正确形式

1. Ihave two_____ (knife)

2.There are many _____ here. (box)

3.There are many _____ on the road. (bus)

4. Afew _____ are drawing on the wall. (boy)

5. The_____ are playing football now. (child)

七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 thedoor. (policeman)

3 Do you want some ________ for dinner?(potato)

4 In autumn, you can see a lot of _______ onthe ground.(leaf)

5 He has two _______.One is blue , the otheris yellow.( box)

6 Two ________ live in this building .(family )

八选择正确的词形

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.

九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 verygood.

_____________________________________

4. These are mice.

______________________________________

5. Those are children.

________________________________

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