1、“当……时候”，引(yǐn)导(dǎo)时间状语从(cóng)句(从句(jù)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、“虽然(rán)，尽管”相当(dāng)于although，引导让步状语从句(常把while放(fàng)在句(jù)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”等于(yú)as long as，引导条件状语从句。

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

while的前(qián)后时态口诀

　　while的(de)瞎棚前后时(shí)态口蚂世诀：当while表(biǎo)示同时(shí)的时候，主句和从句的(de)时态是(shì)一(yī)致的(de)，既可以都是一般(bān)现(xiàn)在时，又可(kě)以都是一般过(guò)去时。

　　可以(yǐ)表(biǎo)示过去(qù)同时发生或者现(xiàn)在(zài)正在同时发(fā)生某事(shì)。

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

　　Please dont talk so loud while others are working.

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

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

　　While she is a top student， she has some shortcomings. While the Internet is bridging the distance bet假如给我三天光明主要内容概括50字，假如给我三天光明主要内容概括30字ween people， it may also be breaking some home or will cause other family problems。

　　3、“只要，如果”等(děng)于as long as，引(yǐn)导(dǎo)条(tiáo)件(jiàn)状语(yǔ)从(cóng)句(jù)。

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

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