when 和while怎么区别使用1.whenever i wake him up he asks for his bill.while i bring it to him ,he pays it.while 变when2.people came to drink there when they were waitting for trains.when变while 3.suddenly while she found a man was nearing he

when 和while怎么区别使用1.whenever i wake him up he asks for his bill.while i bring it to him ,he pays it.while 变when2.people came to drink there when they were waitting for trains.when变while 3.suddenly while she found a man was nearing he
when 和while怎么区别使用
1.whenever i wake him up he asks for his bill.while i bring it to him ,he pays it.
while 变when
2.people came to drink there when they were waitting for trains.when变while
3.suddenly while she found a man was nearing her,she could not stop her car.
while 变when
麻烦根据我的问题来说明一下 而不是仅仅粘一大片过来

when 和while怎么区别使用1.whenever i wake him up he asks for his bill.while i bring it to him ,he pays it.while 变when2.people came to drink there when they were waitting for trains.when变while 3.suddenly while she found a man was nearing he
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.
辨析
①when从句与主句动作先后发生时,不能与while互换.如：
When he has finished his work,he takes a short rest.每当他做完工作后,总要稍稍休息一下.(when = after)
When I got to the cinema,the film had already begun.当我到电影院时,电影已经开始了.(when=before)
②when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.
③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.
④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.
⑤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.
⑥while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.

简单一点说，when后面接过去完成时，while后面接过去进行时

when和while的区别 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。 ②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while ...

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when和while的区别 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。 ②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 ③由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如： a. When the teacher came in, we were talking. 当此句改变主从句的位置时，则为： While we were talking, the teacher came in. b. They were singing while we were dancing. ④when和while 还可作并列连词。when表示“在那时”；while表示“而，却”，表对照关系。如： a. The children were running to move the bag of rice when they heard the sound of a motor bike. 孩子们正要跑过去搬开那袋米，这时他们听到了摩托车的声音。 b. He is strong while his brother is weak. 他长得很结实，而他弟弟却很瘦弱。 具体你可以参考这一段。 when，while，as引导时间状语从句的区别 when，while，as显然都可以引导时间状语从句，但用法区别非常大。
一、when可以和延续性动词连用，也可以和短暂性动词连用；而while和as只能和延续性动词连用。 ① Why do you want a new job when youve got such a good one already？（get为短暂性动词）你已经找到如此好的工作，为何还想再找新的？ ②Sorry，I was out when you called me．（call为短暂性动词）对不起，你打电话时我刚好外出了。 ③Strike while the iron is hot．（is为延续性动词，表示一种持续的状态）趁热打铁。 ④ The students took notes as they listened．（listen为延续性动词）学生们边听课边做笔记。 二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。 1．从句动作在主句动作前发生，只用 when。 ①When he had finished his homework，he took a short rest．（finished先发生）当他完成作业后，他休息了一会儿。 ②When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时，客人们已经离开了。 2．从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。 ①When ／While ／As we were dancing，a stranger came in．（dance为延续性动词）当我们跳舞时，一位陌生人走了进来。 ②When ／While ／As she was making a phonecall，I was writing a letter．（make为延续性动词）当她在打电话时，我正在写信。

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whenever 翻译做 “无论任何时候”
when while都翻译做“当···时候”
区别在于 when 引导点时间和段时间都可以
while只能引导段时间
通俗地说，点时间就是一个瞬间动作 段时间是一个持续性动作
我是环球雅思的语法老师，这个问题我们上课的时候学生经常问道...

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whenever 翻译做 “无论任何时候”
when while都翻译做“当···时候”
区别在于 when 引导点时间和段时间都可以
while只能引导段时间
通俗地说，点时间就是一个瞬间动作 段时间是一个持续性动作
我是环球雅思的语法老师，这个问题我们上课的时候学生经常问道

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