知識點——should have done“本來應該做（應該沒有做）”.ppt

1、,知識點 should have done“本來應該做（應該沒有做）”,should have done“本來應該做（應該沒有做）”,【知識點解析】,should have done 的用法 should have done(本來應該做而沒有做)只用于談論過去情況，主要有兩個用法： 1.用于推測過去已經(jīng)發(fā)生的情況。如： He should have arrived by now. 此時他本該到了。 The letter should have arrived by now. 信現(xiàn)在該到了。 The train should have already left. 火車大概已經(jīng)開走了吧。 I ca

2、nt think why he should have been so angry. 我想不通他怎么會這樣生氣。,should have done“本來應該做（應該沒有做）”,【知識點解析】,2.用于指本該發(fā)生而實際上未發(fā)生的情況。如： You should have told me so before. 你早就應該告訴我。 Look at the time! We should have been at the theatre ten minutes ago. 瞧都什么時候了! 十分鐘前我們就該到戲院了。 George never should have joined the army. 喬

3、治本來就不該參軍的。 You should have told me you were coming. 你該事先告訴我你要來呀。,should have done“本來應該做（應該沒有做）”,【知識點解析】,You should have writtenI was getting worried. 你該來封信啊我都開始擔心了。 John should have left have left by tomorrow. 到明天約翰可能已走了。 I think they should have consulted a doctor earlier. 我認為他們早就該去看醫(yī)生了。 I should h

4、ave left London before 9, but I didnt. 我本該在9點以前離開倫敦，但是我沒有。,should have done“本來應該做（應該沒有做）”,【知識點解析】,In my opinion, she should have resigned earlier. 在我看來，她應當更早一點兒辭職。 You are right; I should have thought of that. 你說得對，我本應當想到這一點的。 I should have phoned Ed this morning, but I forgot. 今天上午我本該給埃德打電話，但是我忘了。,

5、should have done“本來應該做（應該沒有做）”,【典型例題】,1.-He failed in the exam again. -He _his teachers advice. A. should not have followed B. should not follow C. mustnt follow D. should have followed 答案：D 解析：考查虛擬語氣。表示對過去的假設，用現(xiàn)在完成時，根據(jù)句意應當填should have done（本應當做某事卻沒有做）。句意：上文：他考試又不及格了。下文：他應當聽取老師的意見的。故選D.,should have

6、done“本來應該做（應該沒有做）”,【典型例題】,2. The streets are all dry. It _ during the night. A. must have rained B. should have rained C. cant have rained D. couldnt rain 答案：C 解析：考查情態(tài)動詞和虛擬語氣。句意：街道是干的，夜里不可能下雨了。情態(tài)動詞+have done可表示對過去事情的推測，must have done一定已經(jīng)做了某事，表示肯定推測，否定推測不能用mustnt，應該用cant；should have done本應該做某事(實際上未做)

7、；cant have done不可能做了某事，根據(jù)句意可知，這里表示否定的推測，故選C.,should have done“本來應該做（應該沒有做）”,【典型例題】,3. They _ have arrived at lunchtime but their flight was delayed. A. will B. can C. must D. should 答案：D 解析：句意：他們本應該午餐時到達，但是被航班耽誤了。本題考查虛擬語氣故A、B項排除，must have done意為過去肯定做了某事；should have done意為過去應該做某事而實際沒做，故選D.,should have done“本來應該做（應該沒有做）”,【典型例題】,4.-Mum, where is my ball? I remember I put it here yesterday. -You _ it in the wrong place. A. must put B. might put C. might have put D. should have put 答案：C 解析：句意：媽媽，我的球在哪里？我昨天把它放在這里的。你可能放錯地方了。根據(jù)句意可知