摘要: must 1). 表示必须要做的事: 必须 2). 表示很有把握的推断: 一定, 准是.have got to 必须, 不得不.过去式: had to3). -Must I get to the station before three o'clock? -Yes, you must. 4). I'm afraid you will have to wait a while.5). She must be in the classroom now.6). Mary be in Paris, I saw her in town only a few minutes ago. A. mustn't B. shouldn't C. can't D. may not

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