题目内容

3.Mr.Brown__________his hometown since he ____the army.(  )
A.has left;joinedB.has been away from;has joined
C.has been away from;joinedD.left;joined

分析 Brown先生自从他参军以来就离开了家乡.

解答 答案:C.
根据关键词 since he ____the army可知,这里强调一种持续的状态;所以本句使用现在完成时态,其构成为:have/has+过去分词,主语Mr.Brown是第三人称单数形式,所以助动词用has;其动词要用延续性动词be away,其过去分词为been away,since在这里是自从…以来,它引导的从句应该用一般过去时形式,join的过去式形式是joined,故选C.

点评 判断动词的时态,要通过所给的时间状语、提示词或语境去判断动词存在的状态.注意容易混的动词的用法.

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