I have packed the camera.When_____you_____it?
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I have packed the camera.When_____you_____it?
A.have;packed B.do;pack C.already D.yet
A.have;packed B.do;pack C.already D.yet
When did you pack it?
没答案
这里when相当于一个过去时间状语,得和一般过去式连用
你的支持就是我的动力!
再问: 抱歉,输入错误。应该是A.have;packed B.do;pack C.did;pack D.do;packed 但为什么不选A呢?问句明明是过去完成时啊?
再答: A 是现在完成时。尽管表示一个完成的动作,但毕竟属于现在时态的范畴,不可以和疑问词when(指过去未知时间),yesterday,last week..等连用。 比如不可说: I have seen a film yesterday/last week.
没答案
这里when相当于一个过去时间状语,得和一般过去式连用
你的支持就是我的动力!
再问: 抱歉,输入错误。应该是A.have;packed B.do;pack C.did;pack D.do;packed 但为什么不选A呢?问句明明是过去完成时啊?
再答: A 是现在完成时。尽管表示一个完成的动作,但毕竟属于现在时态的范畴,不可以和疑问词when(指过去未知时间),yesterday,last week..等连用。 比如不可说: I have seen a film yesterday/last week.
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