名词单复数变化规则
一、可数名词都有单数和复数之分。

A: 规则的可数名词的复数变化规则：
1.一般情况加s ：book-- books mouth---mouths house---houses girl---girls
2.以s 、sh 、ch 、x结尾的加es ：class--- classes box----boxes ma tch----matches
3.辅音音素+ y结尾的变y为i加es：city---cities country----countries p arty----parties factory----factories
4.以o 结尾的词+es的只有以下词：heroes Negroes tomatoes potatoes z eroes/zeros
以o 结尾并且词尾有两个元音字母+s radios, zoos, bamboos ,(pianos ,kilos photos)
5.以f，fe 结尾的变f或fe为v +es ：
thief thieves wife wives life lives knife knives wolf wolves half halves leaf leaves shelf shelves
B: 名词词尾的读音规则：
1．在[ p] [t] [k] [f]等清辅音后读[s] cups，hats，cakes，roofs
2. 在[s] [z] [∫] [t∫]等音后读[iz] glasses, faces, roses.
3.在其他情况下读作[z] beds days cities knives.
4.以th结尾的词原来读[ ] 加词尾后多数读[ ]
如：mouth—mouths path—paths ;
但是也有不变化的，如：month—months, ninth—ninths, youth—youths.
C: 不规则的可数名词的变化规则：
1.man—men, woman—women, tooth—teeth, foot—feet, goose—geese child—c
hildren, mouse—mice,
2.单复数相同: sheep, deer, Chinese, Japanese Swiss.
3.以man, woman 修饰名词构成合成词时,两个词都变化.
man servant—men servants. (boy/girl students)
woman doctor—women doctors.
名词单复数练习
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)
3）将下列单词变为复数
1. boy -
2.girl -
3. pencil -
4. pen - .
5.book -
6. dictionary 7 . watch - 8 friend - 9. class - 10. chair 11. People 12. egg 13. Student 14. kid 15. chess 16. Comedy 17 . movie 18. library - 19. activity - 20. fish -
4）句子变型
举例：The girl has a dog.(The girls)→The girls have dogs
1、She has a pretty name.(They)
2、I have a radio.(We)
3、The knife was stolen by the thief.(The knives)
4、Is there any leaf on the tree?(Are there)
5、Put the fruit and vagetable on the shelf.(on the shelves)
6、There isn't a tomato in the kitchen.(tomatoes)
7、John wants to buy a pair of trousers.(two)
8、The woman bought a peach.(peaches)
9、The baby has a tooth.(The babies)
10、A family lives in the village.(several family)
11、It has curly hair.(They)
12、We have a new car.(He)
13、Those animals have sharp teeth.(That animal)
14、I have a secret.(paul)。