单词：when
音标：[hwen] ；
柯林斯词典等级：5 级；
牛津三千核心词汇；
conj. 当...的时候
adv. 何时, 什么时候
pron. 什么时侯
n. 时间
adv. 何时, 什么时候
pron. 什么时侯
n. 时间
adv. At what time; -- used interrogatively.
adv. At what time; at, during, or after the time that; at or
just after, the moment that; -- used relatively.
adv. While; whereas; although; -- used in the manner of a
conjunction to introduce a dependent adverbial sentence or clause,
having a causal, conditional, or adversative relation to the principal
proposition; as, he chose to turn highwayman when he might have
continued an honest man; he removed the tree when it was the best in
the grounds.
adv. Which time; then; -- used elliptically as a noun.
adv. At what time; at, during, or after the time that; at or
just after, the moment that; -- used relatively.
adv. While; whereas; although; -- used in the manner of a
conjunction to introduce a dependent adverbial sentence or clause,
having a causal, conditional, or adversative relation to the principal
proposition; as, he chose to turn highwayman when he might have
continued an honest man; he removed the tree when it was the best in
the grounds.
adv. Which time; then; -- used elliptically as a noun.
考试类型：[中考/高考]
词性分布：
when的用法和样例：
例句
用作副词(adv.)
- When did that happen?那件事是什么时候发生的？
- They stood respectfully when he entered the room.当他走进房间时，他们都恭恭敬敬地站着。
- Iron will melt when it is made very hot.当铁烧得很热时就会熔化的。
用作连词(conj.)
- And they roared when Seaman held up two fingers.然后当希曼伸出两根指头的时候他们就吼叫起来。
- I stayed till noon, when I went home.我留到中午，然后就回家了。
- When all is said and done,we still must eat.可是说到底，我们还得吃饭。
- But when I returned the door was open.可是回来时门是开着的。
- How can they learn anything when they spend all their spare time watching television?他们把所有的空闲时间都用来看电视了，还能学什麽东西呢？
- It was the sort of morning when everything goes wrong.那天上午就是那样，事事不顺心。
- He entered on his inheritance when he was 21.他21岁时继承了财产。
常见句型
用作副词(adv.)
- When did you see him last?你上次是什么时候见到他的?
- I'd like to know when they will let him out.我想知道他们什么时候能让他出去。
- I don't know when to start.我不知道何时开始。
- This is the hour when the place is full of people.这种时候这地方到处都是人。
- We will put off the meeting till next week,when we will be all here.会议将推迟到下周,那时我们都在这儿。
- That was when I was eight.那是我八岁时的事情了。
用作连词(conj.)
- Often she will weep when alone.她一个人时常哭。
- When he comes I'll tell him to fetch the police.他来的时候我将让他去喊警察来。
- I was walking along the street when someone called me from behind.我正沿着街道走时,忽然后面有人喊我。
- When the weather is good,I usually go to the country.若是天气好的话,我总是到乡下去。
- Hardly had I opened the door when I hit him.我刚刚打开门就撞到他。
- He sold it for 10 dollars when everyone else sold it for 12.别人卖12元,他却卖10元
词汇搭配
- when the chips are down紧急关头
- when pigs fly永无可能
- when it comes to the crunch1.
- as and when到 ... 时候; ...
- when one's ship comes home当愿望实现时...
- say when酒斟够了请说一声...
- when all is said and done结果(毕竟)
- when one's ship comes in当发财的时候; 当愿...
- rain雨
- pig猪
- if and when如果
- when two Sunday bests come together永不会有那一天...
- Lock the stable door when the horse is stolen贼去关门
- way back when从很久以前
- when the devil is blind不可能
- when the band begins to play当事态变为严重时...
- have seen the day when曾经经历过…的日子...
- when all comes to all通盘考虑后
- when one's clock strikes临终
- each time when每次
经典引文
I wonder when this letter will be finished.
出自：SwiftWhen will the car come?
出自：D. H. LawrenceWhen would it be possible to meet him?
出自：Sunday CorrespondentSome wondered when it would happen again.
出自：New York Review of Books