The train is to start soon and Mary hasn’t turned up． What _____ have happened t
题型：不详难度：来源：
The train is to start soon and Mary hasn’t turned up． What _____ have happened to her?| A．can | B．might | C．may | D．should |
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答案
| A |
解析
试题分析：考查情态动词表示推测。Can have done可能做了某事；might/may have done也许做了某事；should have done本不应该做某事；句意：火车就要出发了，Mary仍然没有出现。她可能发生了什么事情呢？根据句意是对过去发生的事情的推测。故A正确。
点评：本题考查了其它动词表示推测的用法。如果是对过去发生的事情进行推测，使用“情态动词+have done”如果是对现在的情况进行推测，使用“情态动词+动词原形”构成。同时要注意情态动词表示虚拟语气的用法。 |
举一反三
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