早教吧作业答案频道 -->英语-->
what were you doing __your father__back?A.while ;came B.when ;came C.while ;was coming D.when ;was coming
题目详情
what were you doing __your father__back?
A.while ;came B.when ;came C.while ;was coming D.when ;was coming
A.while ;came B.when ;came C.while ;was coming D.when ;was coming
▼优质解答
答案和解析
选B
意思是 你爸爸回来的时候在做什么.第一个空不能选 whild,因为while一指的是一个长时间或延续的动作,而这里 爸爸回来 只是一个某个时刻做的,所以选when.第二个选came是因为 回来 这个动作只是瞬间的,所以不需要用过去进行时
意思是 你爸爸回来的时候在做什么.第一个空不能选 whild,因为while一指的是一个长时间或延续的动作,而这里 爸爸回来 只是一个某个时刻做的,所以选when.第二个选came是因为 回来 这个动作只是瞬间的,所以不需要用过去进行时
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