to have done用法

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(yǔ)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(guò)去未曾實(shí)現(xiàn)的想法和愿望。

to have done一般指尚未完成的完成時(shí),屬于完成時(shí)語(yǔ)態(tài)。例如：By the end of next term(尚未來(lái)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(yǔ)。例如：Having finished his work,Bob went back home happily.

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�求你做了�?/p>

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

你有沒(méi)有什么你后悔大學(xué)時(shí)沒(méi)有做的,或是想作的跟原來(lái)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(kāi)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。