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B. must C. can’t 【 解析 】 考查情態(tài)動(dòng)詞的用法。 must表肯定的推測(cè),意為“一定”,可能性較大,might表示肯定推測(cè),“可能”,可能小較小, can’t表示否定推測(cè),意為“不可能”。根據(jù)句意:那個(gè)人不可能是我的英語(yǔ)老師,他去加拿大了。故選 C。 Presentation 2. must (1) 表示 “必須 ”, 強(qiáng)調(diào)主觀意愿或客觀要求。 I must go now. You must finish it on time. (2) 表示肯定推測(cè) “一定 ”, 一種可能性很大的推測(cè) , 一般用于肯定句中。 —There’s someone knocking at the door. —It must be Jim. Presentation (3) mustn’t意為 “不要 ”, 表示禁止或不允許。 You mustn’t sit on the stairs. (4) 以 must開(kāi)頭的一般疑問(wèn)句 ,肯定回答用 must, 否定回答要用 needn’t。 —Must I return the book now? —No, you needn’t. / Yes, you must. Presentation ( )1. —Must I stay at home and take care of her? —No, you ______. A. mustn’t B. needn’t C. can’t ( )2. Please don’t throw paper about. We _______ keep our environment clean. A. can B. must C. may B B Practice Presentation 3. may和 might 表示允許或請(qǐng)求;表示沒(méi)有把握的推測(cè); may 可放在句首,表示祝愿。 He might be at home. May God bless you! 注意: might 表示推測(cè)時(shí),不表示時(shí)態(tài)。只是可能性比 may 小。 Presentation Peter ______ e with us tonight, but he isn’t very sure yet. A. must B. may C. can D. will Presentation 4. should 表示“應(yīng)該”,常用來(lái)表示勸告、建議 , 認(rèn)為“某人應(yīng)該做某事”或“有義務(wù)責(zé)任做某事”。 We should obey traffic laws. You shouldn’t have made this kind of silly mistakes. 這時(shí)它可以和 ought to, be supposed to 互換使用 。 Presentation 2) should (ought to)表示推測(cè)時(shí),是指有一定根據(jù)的推測(cè),意為“可能、該”。 —When can I e for the photos? I need them tomorrow. —They should be ready by 12:00. It’s nearly seven o’clock. Jack should be here at any moment. Presentation — _______ I borrow your MP3? — Sure. Here you are. A. May B. Should C. Must D. Would — Is John ing by train? — He _______, but he may not. He likes driving his car. A. must B. can C. need D. should Presentation Practice Work in