2017届高考英语一轮复习学通语法第十二讲情态动词和虚拟语气课件课件.ppt

[常设误点] [我来改正] [典题精选] * 做了本没有必要做的事情 neednt have done 本该做但却未做，其否定形式表示本不该做但却做了 should/ought to have done 或许/可能做过某事 may/might have done 不可能做过某事 cant/couldnt have done 1.本来能够做某事但却未做 2．可能做过某事 can/could have done 一定做过某事，其否定形式为cant/couldnt have done must have done 用　法 情态动词＋have done were to＋动词原形 动词过去式 should/would/could/might＋动词原形 表示将来情况 should＋动词原形 should/would/could/might＋have＋过去分词 had＋过去分词 表示过 去情况 should/would/could/might＋动词原形 动词过去式(be的过去式用were) 表示现 在情况 主句的谓语形式 从句的谓语形式 if条件 从句 * 第十二讲情态动词和虚拟语气(一)　情态动词 单句语法填空 1．(2015·北京高考改编)—Cant you stay a little longer? —Its getting late.I really go now. My daughter is home alone. 2. (2015·福建高考改编)—Sorry, Mum! I failed the job interview again. —Oh, its too bad. You (make) full preparations. must should have made 3．(2015·陕西高考改编)You feel all the training a waste of time, but Im a hundred percent sure later youll be grateful you did it. 4．(2015·重庆高考改编)You be Carol. You havent changed a bit after all these years. 5．(2014·江西高考改编)Life is unpredictable; even the poorest become the richest. may must might 6．(2014·四川高考改编)I still remember my happy childhood when my mother take me to Disneyland at weekends. 7．(2014·江苏高考改编)It was sad to me that they, so poor themselves, bring me food. 8．(2013·辽宁高考改编)Harry is feeling uncomfortable. He (drink) too much at the party last night. would should must have drunk 一、情态动词的基本用法 (一)can/could的用法 1．表示能力，意为“能，会”。 ①Many people can use the computer. 许多人会用电脑。 ②No one could answer this challenging question. 没人能回答这个具有挑战性的问题。 2．表示客观或理论上的可能性。 ①It can be very hot here in summer. 这里夏天有时会很热。 ②Accidents can happen to any drunken driver. 醉酒的司机都有可能发生交通事故。 3．表示请求或允许。在疑问句中could可以代替can，语气更委婉。 Can I have a word with you? It wont take long.(2014·北京高考单选) 我可以和你谈谈吗？不会花很多时间的。 4．表示推测，意为“可能”，用于否定句和疑问句。can比could语气强。 ①He cant be our manager. He has gone to Beijing. 他不可能是我们经理。我们经理已经去北京了。 ②He cant have left. His coat is here. 他不可能已经走了。他的外套还在这里。 (二)may/might的用法 1．表示请求和许可。在疑问句中might可以代替may，语气更加委婉。 —Might I ask for a picture of your little