知识点——should have done“本来应该做（应该没有做）”.ppt

1、,知识点 should have done“本来应该做（应该没有做）”,should have done“本来应该做（应该没有做）”,【知识点解析】,should have done 的用法 should have done(本来应该做而没有做)只用于谈论过去情况，主要有两个用法： 1.用于推测过去已经发生的情况。如： He should have arrived by now. 此时他本该到了。 The letter should have arrived by now. 信现在该到了。 The train should have already left. 火车大概已经开走了吧。 I ca

2、nt think why he should have been so angry. 我想不通他怎么会这样生气。,should have done“本来应该做（应该没有做）”,【知识点解析】,2.用于指本该发生而实际上未发生的情况。如： You should have told me so before. 你早就应该告诉我。 Look at the time! We should have been at the theatre ten minutes ago. 瞧都什么时候了! 十分钟前我们就该到戏院了。 George never should have joined the army. 乔

3、治本来就不该参军的。 You should have told me you were coming. 你该事先告诉我你要来呀。,should have done“本来应该做（应该没有做）”,【知识点解析】,You should have writtenI was getting worried. 你该来封信啊我都开始担心了。 John should have left have left by tomorrow. 到明天约翰可能已走了。 I think they should have consulted a doctor earlier. 我认为他们早就该去看医生了。 I should h

4、ave left London before 9, but I didnt. 我本该在9点以前离开伦敦，但是我没有。,should have done“本来应该做（应该没有做）”,【知识点解析】,In my opinion, she should have resigned earlier. 在我看来，她应当更早一点儿辞职。 You are right; I should have thought of that. 你说得对，我本应当想到这一点的。 I should have phoned Ed this morning, but I forgot. 今天上午我本该给埃德打电话，但是我忘了。,

5、should have done“本来应该做（应该没有做）”,【典型例题】,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：考查虚拟语气。表示对过去的假设，用现在完成时，根据句意应当填should have done（本应当做某事却没有做）。句意：上文：他考试又不及格了。下文：他应当听取老师的意见的。故选D.,should have

6、done“本来应该做（应该没有做）”,【典型例题】,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：考查情态动词和虚拟语气。句意：街道是干的，夜里不可能下雨了。情态动词+have done可表示对过去事情的推测，must have done一定已经做了某事，表示肯定推测，否定推测不能用mustnt，应该用cant；should have done本应该做某事(实际上未做)

7、；cant have done不可能做了某事，根据句意可知，这里表示否定的推测，故选C.,should have done“本来应该做（应该没有做）”,【典型例题】,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：他们本应该午餐时到达，但是被航班耽误了。本题考查虚拟语气故A、B项排除，must have done意为过去肯定做了某事；should have done意为过去应该做某事而实际没做，故选D.,should have done“本来应该做（应该没有做）”,【典型例题】,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：妈妈，我的球在哪里？我昨天把它放在这里的。你可能放错地方了。根据句意可知