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whEn Doing等于

这种用法是正确的,when playing basketball game 在这个句子当中,就等于when they are playing basketball game.when+doing 在句中,就相当于when +时间状语从句

你好 这句话不对.when+doing 是用在 主句和从句的主语一致的时候, when 引导的时间状语从句主语可省略.例如:When getting home, he started to do homework. 回到家,他就开始做作业了. 就等于:When he got home ,he started to do homework. (主从句主语都是he) 很明显本题主句和从句的主语是不同的

when+to do sth.

that's time 转换后是 what were they doing that's time

朋友,没有“when do sth”这种用法,但是有“when doing sth”这种用法,比如:we consider it as constant when computing the signal to noise ratio.翻译:当计算信号噪声比时,我们把它视为常数.这里的动名词“computing”,属于动名词做状语从句的用法.

当when表示这时候的时候when=at this time 就像你说的I was having a bath when there was a knock at the door 我在洗澡的时候,这时有人敲门了 所以这时when=at this time 而当when表示当.的时候就不等于at this time 例如:when I was 10 years old,I fell off a big tree我十岁的时候从树上掉下来过 这时候when不等于at this time

前一个短语指 当你正要去做某事的时候,突然.后一个短语指 当你正在做某事的时候,突然.这两个短语不一样的

stop doing = give up doing sth 停止做某事,放弃做某事

while跟进行时,是某一段时间持续做的事,不间断,而when可跟持续性动作也可跟非持续动作,从句可前可后.一般来说,when的用途更广一些.

①when是at or during the time that, 既指时间点,也可指一段时间,while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词. ②

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