while的前后时态口诀(jué)，while的前后时(shí)态要一致吗

　　可以表示过去同时发生或者现(xiàn)在(zài)正(zhèng)在同时发生某事。

　　1、“当(dāng)……时(shí)候”，引导时间状(zhuàng)语从句(从句动作必须(xū)是延(yán)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，尽管”相当(dāng)于although，引导让步(bù)状语从句(常把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”等于as long as，引导条件状语从句(jù)。

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

while的前后时态口诀

　　while的瞎棚前(qián)后时态口蚂世诀：当while表(biǎo)示同时的(de)时候，主句和从句(jù)的(de)时态是一致的(de)，既可以都是一般现在(zài)时，又可以都是一般过(guò)去时。

　　可以表示过(guò)去同时发生或者(zhě)现在正在(zài)同(tóng)时发生某(mǒu)事(shì)。

　　1、“当……时候(hòu)”，引导(dǎo)时(shí)间状语从句(从句(jù)动作必须是延续性(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，尽管”相(xiāng)当于although，引导让(ràng)步状语从(cóng)句(常把while放在(zài)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(rú)果”等于(yú)as long as，引(yǐn)导条件状语从(cóng)句(jù)。

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

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