题目内容

17．Mr．King didn't know _______ yesterday evening．（　　）
A．when does his son come homeB．when did his son come home
C．when his son comes homeD．when his son came home

分析 King先生不知道他儿子昨天晚上什么时候回家的．

解答 答案：D，考查宾语从句：句意"King先生不知道他儿子昨天晚上什么时候回家的．"．宾语从句中从句部分要用陈述语序（主语在前，谓语在后），因此A，B不正确．根据didn't可知主句是一般过去时态，因此从句也要用一般过去时态．C是一般现在时态，不正确．答案是D．

点评 宾语从句中从句通常用陈述语序，即"连接词+主语+谓语+其它"，主句是一般现在时态或一般将来时态，从句时态不受限制．主句是一般过去时态，从句用一般过去时态，注意根据语境完成试题．

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