小學(xué)英語語法零基礎(chǔ)：如何表達本來該做某事?

2017-01-06 14:15:24 　來源：網(wǎng)絡(luò)整理

　　小學(xué)英語語法零基礎(chǔ)：如何表達本來該做某事?

　　should have done

　　“should have + 動詞的完成式”表示本應(yīng)該做而實際上沒有做，它的否定形式表示某種行為本不該發(fā)生但卻發(fā)生了。有責(zé)備的意味。

　　You should have started earlier, but you didn't.

　　你本應(yīng)該早點兒出發(fā)，但是你沒有。

　　You should have washed the wound.

　　你應(yīng)該已經(jīng)洗好了傷口。

　　She shouldn't have taken away my dictionary, for I wanted to use it.

　　她本不應(yīng)該拿走我的詞典，因為我要用它。

　　You shouldn't have been so rude to him.

　　你本不應(yīng)該對他那么粗魯。

　　注：“should have + 完成式”雖然可以表猜測，但因為會造成歧義，應(yīng)少用。

　　ought to have done

　　1、“ought to have + 動詞的完成式”表示過去應(yīng)做某事而實際未做，它的否定形式表示本不應(yīng)該做某事卻做了(用法和should相同)。

　　You ought to have helped him, but you didn't.

　　你本應(yīng)該幫助他但你沒有。

　　You ought to have studied harder.

　　你本應(yīng)該更努力學(xué)習(xí)的。

　　He ought not to have stopped his work halfway.

　　他本不應(yīng)該做這項工作時半途而廢。

　　He oughtn't to have done that.

　　他本來就不該做那件事。

　　2、“ought to have + 動詞的完成式”還可以用來表猜測。

　　They ought to have arrived by now.

　　現(xiàn)在他們想必已經(jīng)到達。

　　If he had started at nine o'clock, he ought to have been in London by eleven o'clock.

　　如果他在九點出發(fā)，那他十一點鐘該到達倫敦了。

QQ掃一掃您將獲得

家長互動

你可能感興趣的文章

立即領(lǐng)取中小學(xué)熱門學(xué)習(xí)資料

*我們在24小時內(nèi)與您取得電話聯(lián)系

學(xué)而思1對1資訊站