一般现在时代替一般将来时
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。
一般现在时代替一般过去时
1 ) "书上说","报纸上说"等。例如:
The newspaper says that it's going to be cold tomorrow. 报纸上说明天会很冷的。
2) 叙述往事,使其生动。例如:
Napoleon's army now advances and the great battle begins.拿破仑的军队正在向前挺进,大战开始了
一般现在时代替现在完成时
1) 有些动词用一般现在时代替完成时,如hear, tell, learn, write , understand, forget, know, find , say, remember等。例如:
I hear (= have heard) he will go to London. 我听说了他将去伦敦。
I forget (=have forgotten) how old he is. 我忘了他多大了。
2) 用句型 " It is … since…"代替"It has been … since …"。例如:
It is (= has been) five years since we last met. 从我们上次见面以来,五年过去了。
一般现在时代替现在进行时。
在Here comes…/There goes…等句型里,用一般现在时代替现在进行时。例如:
There goes the bell. 铃响了。
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