by the time是用现在完成时还是过去完成时啊?
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by the time引导的时间状语从句用一般时，主句用完成时或者一般时。如：
By the time you get home tomorrow, it will be / will have been 9: 00 pm..
By the time he arrived at home, it was / it had been dark.
By the time we got back from dinner, Nona was already / had (already) been in bed.
By the time I arrived the operation was already / had already been performed.
By the time you get home tomorrow, it will be / will have been 9: 00 pm..
By the time he arrived at home, it was / it had been dark.
By the time we got back from dinner, Nona was already / had (already) been in bed.
By the time I arrived the operation was already / had already been performed.
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现在完成时
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看语境，主题是什么时态就是什么时态
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那比如这时他已经受伤了用什么时态呢?
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By the way,he has been hurt
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要根据句子意思
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那比如这时他已经受伤了用什么时态呢?
追答
He has hurt himself at the moment.
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