“情态动词+have-done”讲解.pptVIP

--- Catherine, I have cleaned the room for you.--- Thanks. you ___ it. I could manage it myself. (福建) A. needn’t do??? B. needn’t have done?? C. mustn’t do??? D. shouldn’t have done 该句的意思是：凯萨琳,我已经帮你打扫屋子了， 其实你没有必要做的，我自己能处理的。 八、can/ could have done表示“本来能够做而实际 上没有做的事情”。例如： You could have come here a little earlier. 你本来可以早点来到这儿的。 She could have earned a lot of money. 她本来可以挣一大笔钱的。 1.I ____ here in time, but I met an old friend of mine. I stopped and talked with him for some time.A. shouldn’t have come???? B. must have comeC. needn’t have come?????? D. could have come 巩固练习 这句话的意思是：我本来可以按时来这儿的，但是遇到一位老朋友，说了会话，所以没能及时来这儿。答案选D。 2.They ____ have finished the work yesterday, but it was raining hard. A. must???? B. could?????? C. should????? D. might 巩固练习 该句的意思是：他们本来可以做天完成工作的，但是昨天雨下的太大，所以没能完成。答案选B He paid for a seat, when he ___ have entered free. (山东)A. could??? B. would???? C. must??? D. need 本句表达的意思是：他买了个位置，其实他可以免费进入的。 Thank you! “情态动词＋have done”重点讲解 一、在虚拟条件句中，如果表示与过去事实相反的情况，从句用过去完成时，而主句中则用“情态动词＋现在完成时”， 即 would/ could/ should/ might have done 如果他学习努力， 他就会通过高考了。 If he had worked hard, he would have passed the Collage Entrance Examination. A. could have stay B. could stay C. would stay D. must have stay --- I stayed at a hotel while in New York. --- Oh, did you? You ___ with Barbara. 答案 A,本句是一个含蓄虚拟条件句，意思是：If you had stay at a hotel while in New York, you could have stayed with Barbara. 表达了与过去事实相反的情况。 A. had said B. said C. might say D. might have said 2. Yesterday Jane walked away for discussion, otherwise, she ___ something she would regret later. (上海) 答案D 本句考查的也是含蓄虚拟语气，意思是：如果她参加了讨论，她可能会说出一些后来令她后悔的话。表达了与过去事实相反的情况。 二、must have done 表示对过去已经发生过的情况的肯定推测判断，语气较强， 意思是 “一定……、肯定……” 昨天晚上一定是下雨了，因为今早地面是潮湿的。 It must have rained last night, for the ground is wet this morning. A. must be B. must have been C. should be D. should have been 1. I d