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[小升初语法] [动词的时态]一般现在时代替一般将来时

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  When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, the moment, the minute, the day, the year, immediately等引导的时间状语从句,条件句中,用一般现在时代替将来时。例如:

  He is going to visit her aunt the day he arrives in Beijing. 他一到北京,就去看他姨妈。

  典型例题

  (1)He said he________me a present unless I_______ in doing the experiment.

  A. had not given; had not succeeded  B. would not give; succeeded

  C. will not give; succeed       D. would not give; will succeed.

  答案B. 在时间,条件或让步主语从句中一般不用将来时。本题有He said,故为过去式。主句用将来时,故选B. 此处用一般过去式代替了过去将来时。

  (2) 表示现在已安排好的未来事项,行程等活动。例如:

  The museum opens at ten tomorrow. 博物馆明天10点开门。(实际上每天如此。)

  

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