Nancy’s gone to work but her car’s still there. She______by bus.A、must have gone

游客2023-11-10 39

问题 Nancy’s gone to work but her car’s still there. She______by bus.

选项 A、must have gone
B、should have gone
C、ought to have gone
D、could have gone

答案 A

解析情态动词题。must用在肯定句中表示较有把握的推测，意为“一定”。表示对现在的状态或现在正发生的事情的推测时，must后面通常接系动词be的原形或行为动词的进行时。例如：You have worked hard all day．You must be tired．(你辛苦工作一整天，一定累了。)He must be working in his office．(他一定在办公室里工作。)当must表示对过去事情的推测时，must后要接完成时。例如：I didn’t hear the phone．I must have been asleep．(我刚才没有听到电话响，想必我是睡着了。)must也可以表示对过去某时正发生的事情的推测，后面要接不定式的完成进行时。例如：Why didn’t you answer my phone call?Well，I must have been sleeping，so I didn’t hear it．因此本题选[A]。

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