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问一个关于do的代替问题,我不知道什么时候算作代替,什么时候不算作代替.

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/08/31 14:53:04
问一个关于do的代替问题,我不知道什么时候算作代替,什么时候不算作代替.
代替实义动词避免重复(以下部分我很肯定是,因为do/did/does只代替了一个动词)
He plays better than he did (played)a year ago.他的球比一年前打得好了.
She works harder than he does(works).她工作比他努力.
Who won?I did(won).谁赢了?我.
.+feeding off of those who have the talent that he never did(had).
Love me as I do (love) you.:像我爱你那样地爱我.
(这下面的我不敢肯定,因为do要说代替的话,不是代替一个动词,而是有谓语加宾语或者是动词+副词)
He has more friends than I do do 助动词帮助构成省略句整句应该是 than I have friends
he runs faster than I do do 助动词帮助构成省略句整句应该是 than I run fast
some people go to school by bike,others don't.don't代替的是do not go to school by bike
Whether you believe it or not,I do.
---- 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.)
She do not like playing ping pong,but I do
She like playing ping pong,I do too.
助动词 do有四种用法

一、构成否定句(略)

二、构成疑问句(略)

三、用于强调,如:

I do want to be sure.我确实想肯定.
Do be still!安静!
He did be at home then.当时他确实在家.

四、代替上文的实义动词或整个谓语部分以避免重复

1、代替一个动词,(正如你所你理解的以下例句)

He plays betterthan he did a year ago.他的球比一年前打得好了.(代替played)
She works harderthan he does.她工作比他努力.(代替 works)
Who won?I did.谁赢了?我.(代替 won)

2、代替谓语部分(如你所举得例句)

He has morefriends than I do.  ( 代替上文已有的语言信息 have friends)
He runs fasterthan I do (代替上文已有的语言信息 runfast)
Some people goto school by bike,others don't.  (用否定式代替上文已有的语言信息 go to school bybike)

需要注意的是:上下文时态或人称不一致,需要用助动词 do 的相应的时态或人称取代;下文有新出现的语言信息,该信息不能或缺.如:

He plays betterthan he did a year ago.(did 与上文的 plays 时态不一致,a year ago 是上文没有的语言信息)
He has morebooks than he has done before.(has done 与上文的 has 时态不一致,before 是上文没有的语言信息)
She works harderthan I do.(do 与上文的 works 的人称不一致)