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while和when的区别(状语从句while和when的区别)

when 与 while用法的区别是什么?

when 与 while用法的区别:

while引导的时间状语从句多用进行时态,而when引导的用一般时态即可。

例如:用while时可以说:While I was seeking a parking lot, the police came over and asked me to show my driving license.(当我在找停车场的时候,警察走过来让我出示驾照。) 用when则要说:When I turned my head, I saw a police coming over.(当我回头的时候,我看到警察朝我走过来。)

while只能表达“during certain amount of time”(在某段时间内),不能表达某一时间点。而when则既可以表达一个时间点,又可以表达一段时间。所以,跟在while后面的动词必须要是个延续性动词,不能是类似:put on、sit down这样瞬间就结束的动词。

例如:While I was wondering what to order for lunch today, Penny suggested pizza.(当我还在苦思冥想中午吃什么的时候,Penny提议吃披萨。)

1、I asked him when he'd be back to pick me up.

我问他什么时候回来接我。

2、He could remember a time when he had worked like that himself.

他还能记得自己一度工作起来也是那个样子。

3、How can I love myself when I look like this?

我这个样子,怎么能对自己满意呢?

while

1、They walked on in silence for a while.

他们继续默默无语地走了一会儿。

2、All the while the people at the next table watched me eat.

我吃东西的时候邻桌的人一直在看我。

3、I sat on the settee to unwrap the package while he stood by.

我坐在长椅上打开包裹时他就站在旁边。一、延续性动词延续性动词就是指能延续的动作,可以持续下去的动作,比如说read,它可以长时间延续,可以一直reading下去。如:live,run,stay,clean,play,hold,watch,teach,read,study,teach,eat,drink,write,dance, sing,smoke二、when和while的区别与用法1.when 是指某个时间所发生的事,用于在完成时态while是指某个时间段所发生的事,用于进行时态2.①when意为"在……时刻或时期",它可兼指"时间点"与"时间段",所引导的从句的动词既可以是终止性动词,也可是持续性动词。如: when i got home, he was having supper.我到家时,他正在吃饭。 when i was young, i liked dancing.我年轻时喜欢跳舞。②while只指"时间段",不指"时间点",从句的动词只限于持续性动词。如: while i slept, a thief broke in.在我睡觉时,盗贼闯了进来。③when从句动词为终止性动词时,不能由while替换。如: when he came yesterday, we were playing basketball.昨天他来时,我们正在打篮球。④当从句的谓语是表动作的延续性动词时,when, while才有可能互相替代。如: while / when we were still laughing, the teacher came in.正当我们仍在大声嬉笑时,老师进来了。⑤当从句的谓语动词是终止性动词,而且主句的谓语动词也是终止性动词时,when可和as通用,而且用as比用when在时间上更为紧凑,有"正当这时"的含义。如: he came just as (or when) i reached the door.我刚到门那儿,他就来了。⑥从句的谓语动词如表示状态时,通常用while。如: we must strike while the iron is hot.我们应该趁热打铁。⑦while和when都可以用作并列连词。 mike is tall while his brother is short.迈克的个子很高,然而他弟弟很矮。 mary was on her way home when two big boys stopped her.玛丽正走在回家的路上,这时两个大个子男孩拦住她。1,when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。

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