Once he arrives, we can start. 他一来我们就可以开始。
(2) 涉及time的几个从属连词:every time(每次),each time(每次),(the) next time(下次),any time(随时),the last time(上次),the first time(第一次)。如:
Every time I see her Ill think of it. 每次我看到她,我就想起这事。
He felt nervous each time she spoke to him. 每次她和他讲话,他都感到紧张。
He didnt tell me the last time I saw him. 我上次见到他时他没告诉我。
■与时间状语从句有关的时态问题
关于这个问题有两点值得注意:
(1) 当主句为将来时态或具有将来意义时,时间状语从句通常要用一般现在时表示将来意义,而不能直接使用将来时态:
Turn off the lights before you leave. 走前关灯。
I will tell him as soon as he arrives. 他一来我就告诉他。
(2) 与since 从句搭配的主句的时态通常是现在完成时态:
He has lived here since 1999. 自1999年以来,他就一直住在这儿。
Where have you been since I last saw you? 自我上次见到你之后你到哪里去了?
【注】在特定的语言环境中有时也可能用过去完成时或一般现在时:
It seems like years since we last met. 我们似乎几年未见面了。
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