白兔糖vov
when，英语。[英][wen] [美][wɛn]adv.什么时候; （用于时间的表达方式之后）在那时; 其时; 当时;conj.在…时; 既然; 如果;pron.什么时候; 那时;n.时间，时候; 日期; 场合;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发生，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。
遍地孔方兄
when：英[wen]，美[wɛn]，类似于中文的“闻”。
作为副词有以下用法：adv.
1、(used in questions 用于问句) 什么时候；何时；什么情况下；什么场合下
at what time; on what occasion
When did you last see him?
你上次什么时候见到他的？
When can I see you?
我什么时候可以见你？
When (= in what circumstances) would such a solution be possible?
什么情况下可以这么解决？
2、（用于时间的表达方式之后）在那时，其时
used after an expression of time to mean ‘at which’ or ‘on which’
Sunday is the only day when I can relax.
星期日是我唯一可以休息的日子。
There are times when I wonder why I do this job.
有时候我也不明白自己为什么要干这个工作。
3、其时；当时；当场
at which time; on which occasion
The last time I went to Scotland was in May, when the weather was beautiful.
我上次去苏格兰是在五月份，那时的天气好极了。
扩展资料：
as and when
例句：（用于在特定条件下才会发生的事情）将来…时，到时候 used to say that sth may happen at some time in the future, but only when sth else has happened
1、We'll decide on the team as and when we qualify.
将来我们具备了条件时就会决定成立这个队。
2、I'll tell you more as and when (= as soon as I can) .
我一有可能就会告诉你更多情况。
参考资料：百度百科-when
weddinglily
when 英[wen] 美[wɛn] 音译： 问adv. 当时; 什么时候; 在那时（用于时间的表达方式之后）; 其时; conj. 如果; 在…时; 既然; pron. 什么时候; 那时; [例句]When did your father leave beijing?你父亲什么时候离开北京的？
大大的蚂蚁啊
when：英[wen]，美[wɛn]，类似于中文的“闻”。作为副词有以下用法：adv.1、(used in questions 用于问句) 什么时候；何时；什么情况下；什么场合下at what time; on what occasionWhen did you last see him?你上次什么时候见到他的？When can I see you?我什么时候可以见你？When (= in what circumstances) would such a solution be possible?什么情况下可以这么解决？2、（用于时间的表达方式之后）在那时，其时used after an expression of time to mean ‘at which’ or ‘on which’Sunday is the only day when I can relax.星期日是我唯一可以休息的日子。There are times when I wonder why I do this job.有时候我也不明白自己为什么要干这个工作。3、其时；当时；当场at which time; on which occasionThe last time I went to Scotland was in May, when the weather was beautiful.我上次去苏格兰是在五月份，那时的天气好极了。扩展资料：as and when例句：（用于在特定条件下才会发生的事情）将来…时，到时候 used to say that sth may happen at some time in the future, but only when sth else has happened1、We'll decide on the team as and when we qualify.将来我们具备了条件时就会决定成立这个队。2、I'll tell you more as and when (= as soon as I can) .我一有可能就会告诉你更多情况。
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