可以(yǐ)表示(shì)过(guò)去同时发(fā)生(shēng)或者现在正(zhèng)在同时(shí)发生某(mǒu)事。

　　1、“当(dāng)……时(shí)候”，引导时间状语从句(从句动作必须(xū)是延(yán)续性(xìng)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，尽管(guǎn)”相当于although，引导(dǎo)让步状语从句(常把(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(yào)，如果”等于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(shí)态口(kǒu)诀

　　while的瞎(xiā)棚前后时态(tài)口(kǒu)蚂世诀：当while表示同时的(de)时候，主句和从句(jù)的时态是一致(zhì)的(de)，既可以都是一般现在时，又(yòu)可以(yǐ)都(dōu)是一(yī)般过去时。

　　可以表示过去(qù)同时(shí)发生或者(zhě)现在正在同时发生某事。

　　1、“当……时(shí)候”，引导时间(jiān)状语从句(从句动作(zuò)必须是(shì)延(yán)续性的)。

　　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(zhuàng)语从句(常把(bǎ)while放(fàng)在句(jù)首(shǒu)磨物则(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(zhǐ)要，如(rú)果(guǒ)”等于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。

未经允许不得转载：橘子百科-橘子都知道 快递公司几点下班，派送员晚上多晚不送了