How many books do you have?句中do是代表什么意思?
1个回答

助动词,只起到语法结构的作用

助动词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.

只有在开始大学生活时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?