题目内容
3.___________your mother busy these days?( )| A. | Are | B. | Is | C. | Do | D. | Does |
分析 你的妈妈这些天忙吗?
解答 答案:B.考查系动词.句意"你的妈妈这些天忙吗?".此句缺少实义动词,因此变一般疑问句用系动词.C,D不正确.mother妈妈,单数,因此用is,A不正确.答案是B.
点评 系动词本身有一定的词义,不能单独作谓语,后面与表语连用.要根据具体的语境选择系动词的正确用法.
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