题目内容
2.--I think the man over there must be Tom.--It _______ be him.He has ______ to America.( )
A. | can't;gone | B. | can't;been | C. | may not;been | D. | mustn't;gone |
分析 句意:--我想那边那个人一定是汤姆.
--不可能是汤姆.他去美国了.
解答 答案:A.根据 He has--to America."他去美国了."可知,去美国应该用has gone to America,表示去了现在还没回来,所以那个人它不可能是汤姆.""不可能"应该是can't.而may not表示"不可以",mustn't表示"禁止做"故与题意不符.故选A.
点评 本题实际是考查情态动词表示推测的情况,这很容易与以前学过的情态动词的用法相混淆.情态动词表示推测的情况,表示一般性推测用might、could表示"可能";表示肯定推测用must表示"一定";否定推测用can't表示"不可能".
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