【课件】情态动词表推测课件.ppt

1. –That man must be Sarah’s husband.--No, he_____ be her husband. She is still single.A. can’t B. mustn’t C. may not D. ought to 2. Peter _____come with us tonight, but he isn’t very sure.A. must B. may C. can D. will 2. If he had been here yesterday, he ______ this pop star. A. would meet B. would have met C. met D. must have met 3.It is hard for me to imagine what I would be doing today if I____ in love at the age of seven with the Melinda Cox Library in my hometown. A. wouldn’t have fallen B. had not fallen C. should fall D. were to fall * 上一页 首 页 下一页 * 上一页 首 页 下一页 情态动词 can, could, may,might,must表推测的用法： 情态动词中的can, could, may, might, must都表推测。其中_______的可能性最大,__________次之,___________最小。具体用法如下：1. must的用法（1）表示推测“可能性”时，意思是“___________”，语气肯定，有把握。He must be American. = must can / could may / might 一定、准是 It is certain that he is American. 他准是个美国人。 （2）must表推测只能用于_________。 如表示“一定不、肯定不”的意思时，应用______, 如询问某种可能时，应用______。He must know my address. He can`t know my address. Can he know my address? 肯定句 can`t can 他肯定知道我的地址。 他肯定不知道我的地址。 他知道我的地址吗？ He must be a doctor. 他肯定是一名医生。 He can’t be a doctor. Can he be a doctor? 他肯定不是一名医生。 他会是一名医生吗? （3）must表示推测时，可以推测现在/正在发生的动作/过去发生的动作。He must have a car now. He must be doing his exercises in the classroom. He must have finished the work.（过去发生）他一定 （现在）他一定有辆小汽车。 （正在进行）他一定在教室里做练习。 （过去发生）他一定已完成了工作。 2. can / could的用法（1）can表示推测“可能性”时，往往用于_______或________。Can`t“________”，can在疑问句中意思是“_________”。He can`t be at home. = (2）can /can`t+ have done， He can`t have gone to Shanghai for I saw him a minute ago. It`s so late. Where can she have gone? 否定句 疑问句 一定不 会、可能 It is impossible that he is at home. 他一定不在家。 Can/Could he be at home now? 他不可能去了上海，我刚才还看见他。 天晚了，她可能去哪儿了呢？ 表示对过去发生的动作进行推测。 (3)could have done e.g I could have done it well，but I wasn’t so careful then . (4)can用于肯定句时，多指“客观可能性”,意思是_______ e.g Jim is a good person,but he can be rude.