英语问题英语问题

引导时间状语的时候when和while有什么区别啊 还有as......as.....句型什么意思

while 强调两个动作同时发生

在··········的时候；和··········同时

You must keep quite while he is speaking .

当他说话的时候，你们不要作声。

Don't telephone me while I'm at the office.

在我上班的时候，不要给我打电话。

when 强调动作的先后性

当···········时

I will visit you when I have time.

我有空时就会去拜访你。

He will telephone you when he returns.

他回来时就给你打电话。

注:when也可用作并列连词，相当于“and then”，意思是就是那个时候，它的前面一般要用逗号隔开。如：

We were playing basketball,when it began to rain.

我们正在打篮球，这时天下起雨来了。

I was reading my book ,when Tom came into my room.

我正在看书，这时汤姆进来了。

as·········as 和·········一样

She is as tall as I (am).

她和我一样高。

This book is as wide as it is high.

这箱子宽和高相等。

I'm not as/so clever as you.

我没有你那么聪明。

以上解释绝对正确！

when 是在一个时刻不用进行时 while 要用进行时

as......as... 作为、、、的、、、、

一般有很多用法 as much as as soon as as possible as .....见到就记下

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