1、“当……时候”，引(yǐn)导时间状语(yǔ)从(cóng)句(从句(jù)动作必(bì)须是延续性的(de))。

　　Please don't talk so loud while others are working.

　　While I was cleaning the window，my finger was seriously cut。

　　2、“虽然(rán)，尽管”相当(dāng)于although，引(yǐn)导(dǎo)让步状语从句(常(cháng)把while放在(zài)句(jù)首)。

　　While she is a top student， she has some shortcomings. W四大灵猴的兵器叫什么名字hile the Internet is bridging the distance between people， it may also be breaking some home or will cause other family problems。

　　3、“只要(yào)，如果”等于as long as，引导条件(jiàn)状语从句。

　　There is hope while there is life. While you study hard， your effort will pay off。

while的前后时态口(kǒu)诀

　　while的瞎棚前后时态口蚂世(shì)诀：当while表示(shì)同时的时候，主句和(hé)从(cóng)句的时态(tài)是一致的(de)，既可以都是(shì)一般现在(zài)时(shí)，又可以(yǐ)都(dōu)是一般过去时。

　　可以(yǐ)表示过去同(tóng)时发生或(huò)者现在正在同时发(fā)生某事。

　　1、“当……时(shí)候”，引导时间状语从(cóng)句(jù)(从句动作必(bì)须(xū)是(shì)延(yán)续性(xìng)的)。

　　Please dont talk so loud while others are working.

　　While I was cleaning the window，my finger was seriously cut。

　　2、“虽然(rán)，尽管”相(xiāng)当于although，引导让步状语从句(jù)(常把while放在句首磨(mó)物则)。

　　While she is a top student， she has some shortcomings. While the Internet is bridging the distance between people， it may also be breaking some home or will cause other family problems。

　　3、“只要(yào)，如果”等于(yú)as long as，引导条件状(zhuàng)语从(cóng)句。

　　There is hope while there is life. While you study hard， your effort will pay off。

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