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基本用法: 1、表示事物或人物的特征、状态。如: The sky is blue. 天空是蓝色的。 2、表示经常性或习惯性的动作。如: I get up at six every day. 我每天六点起床。 3、表示客观现实。如: The earth goes around the sun. 地球绕着太阳转。   构成: 1、be动词:主语+be (am, is, are) +其它。如:   I am a boy. 我是一个男孩。 2、行为动词:主语+行为动词 (+其它)。如:   We study English. 我们学习英语。    当主语为第三人称单数(he, she, it)时,要在动词后加"-s"或"-es"。如: Mary likes Chinese.玛丽喜欢汉语。   变化: 1、be动词的变化。  否定句:主语+ be + not +其它。如: He is not a worker. 他不是工人。 一般疑问句:Be +主语+其它。如: —     Are you a student? —     Yes. I am. / No, I'm not.   特殊疑问句:疑问词+一般疑问句。如: Where is my bike? 2、行为动词的变化。   否定句:主语+ don't ( doesn't ) +动词原形 (+其它)。如:   I don’t like bread.   当主语为第三人称单数时,要用doesn’t构成否定句。如:  He doesn't often play.   一般疑问句:Do( Does ) +主语+动词原形+其它。如: —     Do you often play football? —     Yes, I do. / No, I don’t.    当主语为第三人称单数时,要用does构成一般疑问句。如: —     Does she go to work by bike? —     Yes, she does. / No, she doesn’t.    特殊疑问句:疑问词+一般疑问句。如: How does your father go to work? 动词+s的变化规则: 1、一般情况下,直接加-s,如: cook-cooks, milk-milks 2、以s. x. sh. ch. o结尾,加-es,如: guess-guesses, wash-washes, watch-watches, go-goes  
3、以“辅音字母+y”结尾,变y为i, 再加-es,如:study-studies   实时练习 一、 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)  
  ________________________________________________________  
5. We go to school every morning. (改为否定句)  
  ________________________________________________________  
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)  
   _______________________________________________________  
  
 五、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 homework on Sundays.                      __________________    |