Have和do的用法

2024-11-13 04:04:08
推荐回答(2个)
回答1:

have的用法

1)have +过去分词,构成完成时态。例如:

   He has left for London. 他已去了伦敦。

   By the end of last month, they had finished half of their work.  上月未为止,他们已经完成工作的一半。

  2)have + been +现在分词,构成完成进行时。例如:

  I have been studying English for ten years. 我一直在学英语,已达十年之久。

  3)have +been +过去分词,构成完成式被动语态。例如:

  English has been taught in China for many years. 中国教英语已经多年。

do 的用法

1)构成一般疑问句。例如:

  Do you want to pass the CET? 你想通过大学英语测试吗?

  Did you study German? 你们学过德语吗?

2)do + not 构成否定句。例如:

  I do not want to be criticized.  我不想挨批评。

  He doesn't like to study.  他不想学习。

  In the past, many students did not know the importance of English. 

过去,好多学生不知道英语的重要性。

3) 构成否定祈使句。例如:

  Don't go there. 不要去那里。

  Don't be so absent-minded. 不要这么心不在焉。

说明: 构成否定祈使句只用do,不用did和does。

4)放在动词原形前,加强该动词的语气。例如:

  Do come to my birthday party. 一定来参加我的生日宴会。

  I did go there. 我确实去那儿了。

  I do miss you. 我确实想你。

5)用于倒装句。例如:

  Never did I hear of such a thing.  我从未听说过这样的事情。

  Only when we begin our college life do we realize the importance of English. 进了大学以后,我们才认识到英语的重要性。

说明: 引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。

6)用作代动词。例如:

  ---- Do you like Beijing? --你喜欢北京吗?

  ---- Yes, I do. --是的,喜欢。(do用作代动词,代替like Beijing.)

  He knows how to drive a car, doesn't he? 他知道如何开车,对吧?

回答2: