题目内容
18.Mary,_________ nervous when you are having the test tomorrow.( )| A. | don't be | B. | doesn't be | C. | won't be | D. | isn't |
分析 玛丽,当你明天有考试的时候,别紧张.
解答 答案:A.考查祈使句.句意"玛丽,当你明天有考试的时候,别紧张.".这是be动词开头的祈使句,祈使句的否定形式要在实义动词或be动词前加don't.答案是A.其它不正确.
点评 祈使句的肯定句式有三种形式,即:1)以实义动词原形开头.2)以be动词开头.3)以let开头.祈使句的否定结构是以"Don"t+实义动词或be动词原形"开头.要结合语境选择合适用法.
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