题目内容
12.It ____________ be her.She went to Beijing yesterday.( )| A. | mustn't | B. | can't | C. | shouldn't | D. | must |
分析 那不可能是她.她昨天去北京了.
解答 答案:B.考查情态动词.句意"那不可能是她.她昨天去北京了.".A不允许.B不能.C不应该.D必须.根据"她昨天去北京了",可知表示有一定依据的否定推测用can't.答案是B.
点评 情态动词无人称和数的变化;不能单独使用,必须与其后的动词原形构成谓语.否定形式通常在后面加not.要注意情态动词的不同用法.
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