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课件网) Lesson 131 Don’t be so sure! Review 表示对现在和将来的事做推测,与系动词be连用 肯定的推测:must be 肯定是 否定的推测:can’t be 不可能是 (而不是mustn’t be) 表示对过去的事做推测,与系动词be连用 肯定的推测:must have been 那时肯定是 否定的推测:can’t have been 那时不可能是 目录 Grammar 1 Vocabulary 2 Text 3 Grammar 情态动词表猜测--对目前状态推测 He might be a man. He may be a driver. mechanic doctor He might not be a man. He must be a man. He must be a policeman. He can't be a woman. He can't be a doctor. He may not be a driver. We may go abroad . It may be cheaper. We might not go anywhere . 思考: may与might都是_____动词,后加_____,都表示_____ 根据单双课内容,总结may表示推测,在句中可构成的结构: 表对将来的推测: sb.+may +v. sb.+may +be +n./doing./a./prep.phrase 表对过去的推测: sb.+may +have+v.过去分词 sb.+may +have +been+n./doing./a./prep.phrase must be /can’t be/ may be 情态动词表推测辨析 通过L129-L130与L131-L132课文内容,找出含有must be\can’t be\may be 的句子,然后进行如下总结 must be :通常用于_____推测,语气较强 “_____” can’t be : 通常用于_____推测 “_____” may be :语气较弱 表“_____” 表对过去的推测句型结构:_____ 结构:sb.+must/may/ can’t+have+v.过去分词 sb.+must+may /can’t/have +been+n./doing 2024/8/26 “情态动词+ have+ 过去分词”的用法 英语中,表示对过去某种情况进行推测或对已发生的动作或存在的状态进行推测,常用情态动词must, may, might, can, could, should, ought to, would等 + have + 过去分词表示。一般来说,说话人的语气或推测的把握程度不同,使用的情态动词也不同。 2024/8/26 may 的用法 1.表示请求、可以、允许。 You may drive the tractor. 2.may /might 推测性用法:可能 He may be right. 3.当回答由may 引起的问题时,否定答语要用must not,表示“不许可”、“不应该”、“不行”。 May I come in No, you mustn’t. 2024/8/26 might的用法 1)表过去的“可能”和“允许”多用于间接引语。 She said that he might take her dictionary. 2)表现在的“可能”,其可能性要比may小。 Electric irons could be dangerous; they might give you a severe shock. 电熨斗会有危险,它可能电着人。 3)may (might) + have +done 表示对过去发生行为的推测,含有“想必”、“也许是”的意思。 It may have been true. 2024/8/26 注意: 1. 只用于肯定和否定句中,不用于疑问句中。 2. might 比may可能性更小 may no 可能不 can not不可 3. 表建议(可和as well 连用) You may(might)as well stay where you are. 还是……的好 4. 表祝愿 2024/8/26 Brainstorm What are you going to do during the holiday? Where are you going to spend the holiday? Where is Gary going to spend his holiday this year Who wants to go to Egypt Lesson 131 Don’t be so sure! Listen and answer New words and expressions Egypt n. 埃及 Egyptian n. 埃及人 adj. 埃及的;埃及人的 Pyramid [ p r m d] Sphinx mummy [sf ks] abroad adv. 在国外 be abroad go abroad study abroad 在国外 出国 出国留学 My son is still living abroad. 我的儿子仍住在国外。 ab road abroad 去国外学ab(c)这条路不好走。 worry v. 担忧 He is worried about his work. He worries about his work. worry about =be worried ... ...