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规则变化：
1.一般情况直接加s, 如cake—cakes。
2.以s, x, sh, ch结尾的加es,如watch—watches, box—boxes, brush—brushes(但stomach—stomachs除外)。
3.以o结尾的加es(初中所学有“英雄hero”“黑人Negro” 爱吃 “土豆potato”和“西红柿tomato”)。
4.以辅音字母+y结尾的把y改为i再加es,如city—cities。
5.以f(fe)结尾的把f(fe)改为v再加es,如knife—knives（初中所学的reef—reefs, roof—roofs例外)。
不规则变化：
1.集体名词只有复数(people, police, clothes, trousers, pants)。
2.形式复数实则单数(news, maths, politics, physics)。
3.形式单数实则复数(people, police, cattle)。
4.单复同形(sheep, deer)。
5.特殊变化(man—men, woman—women, foot—feet, tooth—teeth, child—children)。
6.国人变复数规律是：中日友好相一致（不变），英法联盟a变e,其余剩下加s。
7.以man/woman合成修饰的词变复数时两词均变（a man doctor—some men doctors)。
练习：
1. We can see some ____ in the picture.
A. shop B. ship C. sheep D. apple
2. There are few ____ in the fridge. Let’s go and buy some peas and cabbages.
A. vegetables B. meat C. fruit D. eggs
3. He is a teacher. He works in a new ____.
A. shop B. school C. factory D. hospital
4. They are ____.
A. man doctor B. man doctors
C. women doctor D. women doctors
5. Lucy and Lily are twins. They are ____.
A. American B. Americans C. Englishman D. Canadian
6. The police ____. Physics ____ their favorite subject.
A. are studying, is B. is studying, are
C. is studying, are D. are studying, are
7. There are some ____ in the street. They are talking in ____. They are from ____(Germany).
8. There are five ____(Englishman) buying some kinds of magazines in the store.
9. He is an ____, and they are ____.
A. Englishman; Germans B. English; Germans
C. Englishman; Germen D. English; Germen
10. I have three pen friends. One is an ____, the other two are ____.
A. Japanese; America B. Russian; Germany
C. Canada; Australia D. Englishman; Frenchmen
Keys:1.C 2.A 3.B 4.D 5.B 6.A 7.Germans; German; Germany 8.Englishmen 9.A 10.D
1.一般情况直接加s, 如cake—cakes。
2.以s, x, sh, ch结尾的加es,如watch—watches, box—boxes, brush—brushes(但stomach—stomachs除外)。
3.以o结尾的加es(初中所学有“英雄hero”“黑人Negro” 爱吃 “土豆potato”和“西红柿tomato”)。
4.以辅音字母+y结尾的把y改为i再加es,如city—cities。
5.以f(fe)结尾的把f(fe)改为v再加es,如knife—knives（初中所学的reef—reefs, roof—roofs例外)。
不规则变化：
1.集体名词只有复数(people, police, clothes, trousers, pants)。
2.形式复数实则单数(news, maths, politics, physics)。
3.形式单数实则复数(people, police, cattle)。
4.单复同形(sheep, deer)。
5.特殊变化(man—men, woman—women, foot—feet, tooth—teeth, child—children)。
6.国人变复数规律是：中日友好相一致（不变），英法联盟a变e,其余剩下加s。
7.以man/woman合成修饰的词变复数时两词均变（a man doctor—some men doctors)。
练习：
1. We can see some ____ in the picture.
A. shop B. ship C. sheep D. apple
2. There are few ____ in the fridge. Let’s go and buy some peas and cabbages.
A. vegetables B. meat C. fruit D. eggs
3. He is a teacher. He works in a new ____.
A. shop B. school C. factory D. hospital
4. They are ____.
A. man doctor B. man doctors
C. women doctor D. women doctors
5. Lucy and Lily are twins. They are ____.
A. American B. Americans C. Englishman D. Canadian
6. The police ____. Physics ____ their favorite subject.
A. are studying, is B. is studying, are
C. is studying, are D. are studying, are
7. There are some ____ in the street. They are talking in ____. They are from ____(Germany).
8. There are five ____(Englishman) buying some kinds of magazines in the store.
9. He is an ____, and they are ____.
A. Englishman; Germans B. English; Germans
C. Englishman; Germen D. English; Germen
10. I have three pen friends. One is an ____, the other two are ____.
A. Japanese; America B. Russian; Germany
C. Canada; Australia D. Englishman; Frenchmen
Keys:1.C 2.A 3.B 4.D 5.B 6.A 7.Germans; German; Germany 8.Englishmen 9.A 10.D