to have done是不定式的完成結(jié)構(gòu)。to have done有三種用法：表示發(fā)生在謂語動(dòng)作之前的動(dòng)作；表示在某個(gè)給定的時(shí)間之前已完成的動(dòng)作;表示過去未曾實(shí)現(xiàn)的想法和愿望。

to have done 與having done 有什么區(qū)別

to have done一般指尚未完成的完成時(shí),屬于完成時(shí)語態(tài)。例如：By the end of next term(尚

未來到) ,we are going to have learnt nine thousand words.

having done 強(qiáng)調(diào)時(shí)間上的先后順序,一般作狀語。例如：Having finished his work,Bob went back home hily.

to have done的雙語例句

I don't think you ought to have done that.

我想你不應(yīng)該這樣做的。

They ought to have done so sooner; it would have saved them numerous misfortunes.

他們?cè)缇驮撨@樣做,那樣,許多不幸的事都不會(huì)發(fā)生了。

You ought to have done these exercises because you were required to so during your holidays.

這些練習(xí)你本應(yīng)該做完的,因?yàn)榧倨诶锞鸵竽阕隽恕?/p>

Is there anything you regret not having done or would like to have done differently at college.

你有沒有什么你后悔大學(xué)時(shí)沒有做的,或是想作的跟原來不一樣的事。

When I started in this business,I was just a babe in the woods.I was lucky to have done so well.

當(dāng)我開始干這買賣的時(shí)候,我是一竅不通.我能搞得這么好,全憑運(yùn)氣。