可以表(biǎo)示过(guò)去同时(shí)发生或者现(xiàn)在(zài)正在(zài)同时发生某事。

　　1、“当……时候”，引导时间(jiān)状语从句(从句动作必须(xū)是延续性的)。

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

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

　　2、“虽(suī)然(rán)，尽管”相当于although，引导(dǎo)让步状语从句(常(cháng)把(bǎ)while放在句首)。

　　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，如果(guǒ)”等于(yú)as long as，引(yǐn)导条件(jiàn)状语(yǔ)从句。

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

while的前(qián)后时态口(kǒu)诀

　　while的瞎棚前后时态口蚂世诀(jué)：当while表示同时(shí)的时(shí)候，主句和从(cóng)句(jù)的时态是一致的(de)，既可以都是一般(bān)现(xiàn)在时，又可以(yǐ)都(dōu)是一般(bān)过去时。

　　可以表(biǎo)示(shì)过去(qù)同时发生或者现(xiàn)在(zài)正(zhèng)在同时(shí)发生某事。

　　1、“当(dāng)……时候”，引导时间状(zhuàng)语(yǔ)从(cóng)句(从句动作必(bì)须是(shì)延续性的(de))。

　　Please dont talk so loud while others are working.

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

　　2、“虽(suī)然，尽(jǐn)管(guǎn)”相当于although，引导让(ràng)步状语从句(常把(bǎ)while放(fàng)在句首磨(mó)物则(zé))。

　　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，如果(guǒ)”等于as long as，引导条件状语从(cóng)句。

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

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