()you are doing that,I’ll go and get some water为什么用while 不能用as soon as?while能够引导这样的事态吗?他不是只限于过去时态吗?可是句子的时态是一个将来一个现在不符合as soon 而我看到的while 都

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()you are doing that,I’ll go and get some water为什么用while 不能用as soon as?while能够引导这样的事态吗?他不是只限于过去时态吗?可是句子的时态是一个将来一个现在不符合as soon 而我看到的while 都
()you are doing that,I’ll go and get some water
为什么用while 不能用as soon as?
while能够引导这样的事态吗?
他不是只限于过去时态吗?
可是句子的时态是一个将来一个现在
不符合as soon
而我看到的while 都用于过去时态啊

()you are doing that,I’ll go and get some water为什么用while 不能用as soon as?while能够引导这样的事态吗?他不是只限于过去时态吗?可是句子的时态是一个将来一个现在不符合as soon 而我看到的while 都
while只指"时间段",不指"时间点",从句的动词只限于持续性动词.如:
While I slept,a thief broke in.在我睡觉时,盗贼闯了进来.
as soon as 引导时间状语从句,表示“一……就……”.如果主句用将来时或情态动词或祈使句,从句必须用一般现在时代替将来时.如:
I’ll tell him the news as soon as he comes.
他一来我就告诉他那消息.
She may come as soon as she finishes the work.
事情一做完她就可以来.
when引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词.并且when有时表示“就在那时”.
例如:
When she came in,I stopped eating.她进来时,我在吃饭.(瞬时动词)
When I lived in the countryside,I used to carry some water for him.当的住在农村时,我常常为他担水.(延续性的动词)
We were about to leave when he came in.我们就要离开,就在那时他进来了.
While引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生(或者相对应).并且while有时还可以表示对比.例如:
While my wife was reading the newspaper,I was watching TV.(was reading是延续性的动词,was reading和was watching同时发生)
I like playing football while you like playing basketball.我喜欢踢足球,而你喜欢打篮球.(对比)

while当什么什么的时候
as soon as 一……就
他们意思都不一样,while 意思更通顺一点,没听说它限制时态的
每个单词都有很多用法。
还有as soon as 一般不放开头

as soon as 要遵循‘主将从现’原则 ,即主句用一般将来时,从句要作一般现在时,而while后接进行时态(现在进行时或过去进行时,根据句子来定)故用while.

while 后面通常接进行时,as soon as 不能接进行时