动词的三单形式变化规则
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哪些主语是第三人称单数? 现归纳总结如下：
一、人称代词he, she, it 是第三人称单数。如：
He likes watching TV. 他喜欢看电视。
He has lunch at twelve. 她十二点吃午餐。
It looks like a cat. 它看起来像只猫。
二、单个人名、地名或称呼作主语；是第三人称单数。如：
①Han Mei looks like her mother. xx 看起来像她的母亲。
②Beijing is in China. xx 在xx。
③Un cle Wang often makes cakes. xx 叔叔经常做蛋糕。
三、单数可数名词或"this / that / the+ 单数可数名词"作主语时，是第三人称单数。如：
①A horse is a useful ani mal. 马是有用的动物。
②This book is yours. 这本书是你的。
③That car is red. 那辆小汽车是红色的。
④The cat is Lucy's. 这只猫是露xx的。
四、不可数名词作主语时为第三人称单数。如：
①The milk is in the glass. 牛奶在玻璃杯里。
②The bread is very small. 那面包很小。
动词的三单形式变化规则：
1．一般情况下，直接加-s
2．以s. x. sh. ch. o 结尾，加-es
3. 以“辅音字母+y ”结尾，变y 为i,再加-es
4. have 要变 has
般现在时用法专练 :
写出下列动词的第三人称单数 drink ___ ____ go
____ __ stay ____ __ make _ look _______ ____ have
____ ___ pass ___ ___ carry
_ come___ ____ watch__ ___ plant___ ___ fly
__ study ___ ___ brush ____________ ___ do ___________ ___ teach_
二、用括号内动词的适当形式填空。
1. He often _______ (have) dinner at home.
2. Daniel and Tommy _____ (be) in Class One.
3. We _____ (not watch) TV on Monday.
4. Nick ____ (not go) to the zoo on Sunday.
5. ____ they _______ (like) the World Cup?
6. What ______ they often ______ (do) on Saturdays?
7. _____ your parents ______ (read) newspapers every
day?
8. The girl ______ (teach) us English on Sundays.
9. She and I _______ (take) a walk together every evening.
10. There ______ (be) some water in the bottle.
11. Mike _____ (like) cooking.
12. They _____ (have) the same hobby.
13. My aunt ______ (look) after her baby carefully.
14. You always _____ (do) your homework well.
15. I _____ (be) ill. I 'm staying in bed.
16. She _____ (go) to school from Monday to Friday.
17. Liu Tao _____ (do) not like PE.
18. The child often _____ (watch) TV in the evening.
19. Su Hai and Su Yang ______ (have) eight lessons this term.
20. －What day ______ (be) it today?It 's Saturday.
三、按照要求改写句子
1. Daniel watches TV every evening.( 改为否定句)
2. I do my homework every day.( 改为一般疑问句，作否定回答)
3. She likes milk.( 改为一般疑问句，作肯定回答)
4. Amy likes playing computer games.( 改为一般疑问句，作否定回答)
改为否定句)
5. We go to school every morning.(
6. He speaks English very well.（改为否定句）
7. I like taking photos in the park.（对划线部分提问）
8. John comes from Canada.（对划线部分提问）
9. She is always a good student.（改为一般疑问句，作否定回答）
10. Simon and Daniel like going skating.（改为否定句）
四、改错（划出错误的地方，将正确的写在横线上）
1. Is your brother speak English? _________________
2. Does he likes going fishing? _________________
3. He likes play games after class. _________________
4. Mr. Wu teachs us English. _________________
5. She don't do her homeworkon Sundays. _________________