can, could, may, might, must 表示推测的用法

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can, could, may, might, must 表示推测的用法

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can, could, may, might, must 表示推测的用法

1）情态动词+动词原形。

表示对现在或将来的情况的推测，此时动词通常为系动词。 I don't know where she is, she may be in Wuhan. 2）情态动词+动词现在进行时。

表示对现在或将来正在进行的情况进行推测。

At this moment, our teacher must be correcting our exam papers.

这时，我们老师想必在批改试卷。 3）情态动词+动词完成时。表示对过去情况的推测。

We would have finished this work by the end of next December. 明年十二月底前我们很可能已完成这项工作了。 The road is wet. It must have rained last night. 地是湿的，昨天晚上一定下雨了。 4）情态动词+动词的现在完成进行时。表示对过去正在发生事情的推测。

Your mother must have been looking for you. 你妈妈一定一直在找你。

5）推测的否定形式，疑问形式用can't, couldn't表示。 Mike can't have found his car, for he came to work by bus

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