enjoy可数吗，joy可不可数>while的前后(hòu)时态口诀，while的(de)前后时态要一致吗是当while表示(shì)同(tóng)时的时候，主句(jù)和从(cóng)句的时态是一致的，既可(kě)以都(dōu)是(shì)一般现(xiàn)在时，又可以都是一(yī)般过去时(shí)的(de)。

while的前(qián)后时态(tài)口(kǒu)诀(jué)，while的(de)前后(hòu)时态要一致吗

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

　　1、“当(dāng)……时(shí)候”，引导时间(jiān)状语从句(从句动(dòng)作必须是(shì)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(jǐn)管(guǎn)”相(xiāng)当于although，引导让步(bù)状语(yǔ)从(cóng)句(jù)(常把while放在(zài)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(děng)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的前后时态口诀

　　while的瞎棚前后时态口蚂世诀(jué)：当(dāng)while表示同时(shí)的时候，主句和从句的时态是一致的，既可(kě)以都是一般现在(zài)时，又可以都是(shì)一般过去(qù)时。

　　可以表示过(guò)去同时发生或(huò)者(zhě)现在正在同时发生某事。

　　1、“当……时候”，引导(dǎo)时间状语从句(从句动作必(bì)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(suī)然(rán)，尽管”相当于although，引导让步(bù)状(zhuàng)语从(cóng)句(常把while放在(zài)句首磨物(wù)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(zhǐ)要，如果(guǒ)”等于as long as，引(yǐn)导条件状语(yǔ)从句。

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

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