2017高三英语二轮复习（江苏专用）B 高频考点（高频规律技巧）课件：B1_高考复习指南

2017高三英语二轮复习（江苏专用）B 高频考点（高频规律技巧）课件：B1

　　This may not be done by him. 这可能不是他干的。(表不确定) Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony? 布什先生做一切事情都非常守时。开幕式他怎么可能会迟到呢？(表示疑惑、惊讶) I didn't hear the phone. I must have been asleep. 我没听见电话铃响，我一定是睡着了。(表肯定) —Are you coming to Jeff's party? ——你要来杰弗的聚会吗？ —I'm not sure. I might go to the concert instead.(表不确定) ——我不确定，我可能要去音乐会。

　　(2017·课标全国Ⅰ卷)I ________use a clock to wake me up because at six o'clock each morning the train comes by my house. A．couldn't

　　B．mustn't

　　C．shouldn't

　　D．needn't 答案　D　[根据句意，火车准时经过我家，没必要用闹钟。] (2017·重庆卷)—________you interrupt now? Can't you see I'm on the phone? —Sorry Sir, but it's urgent. A．Can

　　B．Should

　　C．Must

　　D．Would 答案　C　[must此处可译为“偏偏”或“非要”。]

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　　表示必要性 must常用来表示必要性，意为“必须”。 (1)must＋do sth(现在或将来)必须做某事 (2)don't have to do sth/don't need to do sth/needn't do sth(现在或将来)不必做某事 (3)表示过去没必要做某事时，分为以下情况： ①needn't have done sth本来不必做而做了某事 ②didn't have to do sth/didn't need to do sth/It was not necessary to do sth(过去)不必做某事(不强调是否做了) You needn't have worked that late last night. It was harmful to your health. 你昨晚不必工作到那么晚。那对你的身体没好处。 ※1.mustn't have p．p形式不存在因为：(1)mustn't表禁止，动作未发生 (2)must表推测，可能性全部否定用can't