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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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