情態(tài)動(dòng)詞+have+過(guò)去分詞
來(lái)源:本站原創(chuàng) 點(diǎn)擊率: 發(fā)布: 2013-11-17
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情態(tài)動(dòng)詞+have+過(guò)去分詞
武漢新東方冬令營(yíng) 情態(tài)動(dòng)詞+have+過(guò)去分詞的學(xué)習(xí)
1) may(might) have + done sth, can (could) have + done sth 表示過(guò)去,推測(cè)過(guò)去時(shí)間里可能發(fā)生的事情。例如:
philip may (might) have been hurt seriously in the car accident. 菲力浦可能在車禍中受了重傷。
philip can (could) have been hurt seriously in the car accident.
2) must have +done sth,對(duì)過(guò)去時(shí)間里可能發(fā)生的事情的推測(cè),語(yǔ)氣較強(qiáng),具有"肯定","諒必"的意思。例如:
——linda has gone to work, but her bicycle is still here. 琳達(dá)已經(jīng)去上班了,但她的單車還在這兒。
——she must have gone by bus.肯定乘巴士去的。
3) ought to have done sth, should have done sth表示本應(yīng)該做某事,而事實(shí)上并沒(méi)有做。否定句表示"不該做某事而做了".例如:
you ought to (should) have been more careful in this experiment. 你當(dāng)時(shí)在做試驗(yàn)時(shí)應(yīng)該更仔細(xì)點(diǎn)。
he ought not to have thrown the old clothes away.他不該把舊衣服扔了。(事實(shí)上已扔了。)
ought to 在語(yǔ)氣上比should 要強(qiáng)。
4) needn't have done sth表示本沒(méi)必要做某事,但做了。例如:
i dressed very warmly for the trip, but i needn't have done so. the weather was hot.
旅行時(shí),我衣服穿得較多,其實(shí)沒(méi)有必要。那時(shí)天很熱。
5) would like to have done sth表示本打算做某事,但沒(méi)做。例如:
i would like to have read the article, but i was very busy then. 我想讀這篇文章,但太忙了一直沒(méi)讀。
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