__we got to the station,the train had left already选when 为什么?since不可以吗、

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__we got to the station,the train had left already选when 为什么?since不可以吗、
__we got to the station,the train had left already
选when 为什么?since不可以吗、

__we got to the station,the train had left already选when 为什么?since不可以吗、
when 引导的从句,从句用了过去时,主句用过去完成时.只有when才可以这样
since 不可以

不可以。当我们到达车站时,火车已经离开了。火车开这个动作是发生在到达车站前,表示过去的过去,所以用过去完成时。since表示自从.... 语义不通顺

when 当我们到达车站的时候,火车已经离开
这里的动作的有先后的,所以先发生的用过去完成时态,那么后发生的用一般过去
如果选择since 第一语意不通顺,第二主句的时态用现在完成时态。
楼主,希望对你有帮助。

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