[QUEST 疑问词](用于疑问句)什么时候,何时 You use when to ask questions about the time at which things happen.
When are you going home?...
你什么时候回家?
When did you get married?...
你什么时候结的婚?
When is the press conference?...
记者招待会何时举行?
When were you in this house last?...
你最后一次在这房子里是什么时候?
'I'll be there this afternoon.' — 'When?'
“我今天下午会去那里。”——“什么时间?”
2
[CONJ-SUBORD 连词](表示两事同时发生)在…时,当…时 If something happens when something else is happening, the two things are happening at the same time.
When eating a whole cooked fish, you should never turn it over to get at the flesh on the other side...
吃一整条鱼时,切忌把它翻过来去吃另一面的肉。
Mustard is grown in the field when weeds are there, rather than when the growing crops are there.
芥菜要在地里长杂草而不是长庄稼时种植。
3
[CONJ-SUBORD 连词](引导从句,表示某事发生于另一活动、事件或情形期间)在…的过程中 You use when to introduce a clause in which you mention something which happens at some point during an activity, event, or situation.
When I met the Gills, I had been gardening for nearly ten years.
遇到吉尔一家时我已经做了近10年的园艺工作。
4
[CONJ-SUBORD 连词](引导从句,说明主句动作已经发生或将要发生时的情况)其时 You use when to introduce a clause where you mention the circumstances under which the event in the main clause happened or will happen.
When he brought Imelda her drink she gave him a genuine, sweet smile of thanks...
当他把饮料拿给艾梅尔达时,她真诚而甜美地向他微笑以示感谢。
I'll start to think about it when I have to write my report.
我要写报告时会对此予以考虑的。
5
[CONJ-SUBORD 连词](尤用于动词和形容词后引导从句,表示某事发生的时间)什么时候,何时 You use when after certain words, especially verbs and adjectives, to introduce a clause where you mention the time at which something happens.
I asked him when he'd be back to pick me up...
我问他什么时候回来接我。
I don't know when the decision was made...
我不知道决定是什么时候作出的。
It is important to check when the laboratory can do the tests.
核实一下实验室何时可以进行这些测试是很重要的。
6
[PRON-REL 关系代词](用于引导从句,限定或指示某事发生的时间)…的时候 You use when to introduce a clause which specifies or refers to the time at which something happens.
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。
She remembered clearly that day when she'd gone exploring the rockpools...
她清楚地记得她去岩石区潮水潭探险的那天。
In 1973, when he lived in Rome, his sixteen-year-old son was kidnapped.
1973年他在罗马居住时,他16岁的儿子遭到了绑架。
7
[CONJ-SUBORD 连词](用于引出某个观点、评论或问题的原因)既然,考虑到 You use when to introduce the reason for an opinion, comment, or question.
How can I love myself when I look like this?...
我这个样子,怎么能对自己满意呢?
Emerald starlings are fairly small when compared with other such birds.
与同类的其他鸟相比,翠辉椋鸟要小很多。
8
[CONJ-SUBORD 连词](用于引出使句子的其他部分显得让人吃惊或不大可能的事实或评论)虽然,然而,可是 You use when in order to introduce a fact or comment which makes the other part of the sentence rather surprising or unlikely.
Our mothers sat us down to read and paint, when all we really wanted to do was to make a mess...
我们的母亲让我们坐下来读书和画画,而我们真正想做的却是打打闹闹。
The temperature sensor is making the computer think the engine is cold when, in fact, it's hot.
温度传感器发给计算机的信息为发动机是冷却的,可实际上它的温度很高。
Oxford
when★/wen; NAmEwen/
adverb
,
pronoun
,
conjunction
adverb★1★( used in questions 用于问句) at what time; on what occasion 什么时候;何时;什么情况下;什么场合下◆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★used after an expression of time to mean ‘at which’ or ‘on which’ (用于时间的表达方式之后)在那时,其时◆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★at which time; on which occasion 其时;当时;当场◆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。pronoun★what/which time 什么时候;何时◆Until when can you stay?你可以待到什么时候?◆‘I've got a new job.’ ‘Since when?’“我有了份新工作。”“什么时候开始的?”conjunction★1★at or during the time that 在…时候;当…时;在…期间◆I loved history when I was at school.我上学时喜欢历史。2★after 在…之后◆Call me when you've finished.你完成后就打电话给我。3★at any time that; whenever 在任何…时候◆Can you spare five minutes when it's convenient?方便时能占用你五分钟时间吗?4★just after which 一…就;刚…就◆He had just drifted off to sleep when the phone rang.他刚睡着电话铃就响了。5★considering that 考虑到;既然◆How can they expect to learn anything when they never listen?既然他们从不听讲,他们怎么能指望学到东西呢?6although 虽然;然而;可是◆She claimed to be 18, when I know she's only 16.她自称是 18 岁,可是我知道她才 16 岁。IDIOMsee
1at what time: When are we leaving? When did you first meet Dr Darnall? When will the work be finished? I don’t know when I’ll see her again.when to do something I’ll tell you when to stop.2at or during the time that something happens: Leonard was nine when his father died. When the family came here from Russia, they were penniless. When he was in the air force he flew Tornado jets.3after or as soon as something happens: When the meal was finished, Rachel washed up and made coffee. I’ll phone you again when I get home.4used to mention a type of event or situation when talking about what happens on occasions of that type: When lead is added to petrol, it improves the car’s performance. When mixed with water the powder forms a smooth paste. He always wears glasses except when playing football.5used to show which particular time or occasion you are talking about: The best moment was when he scored the winning goal. There are times when I hate him.the day/time/afternoon etc when She remembered the day when Paula had first arrived.6by/since when before or since which time: The baby is due in May, by when the new house should be finished. That was written in 1946, since when the education system has undergone great changes.7since when ...? spoken used to show that you are very surprised or angry: Since when have you been interested in my feelings?8even though something is true: Why does she steal things when she could easily afford to buy them?9used to introduce a fact or statement that makes something seem surprising: When you consider that the airline handled 80 million passengers last year, the accident figures are really very small.GRAMMAR: Choosing the right tense• You use the present tense with when: · What are you planning to do when you leave college?• Don’t use ‘will’ in the clause after when. ✗Don’t say: What are you planning to do when you will leave college?• You can also use the present perfect tense with when: · What are you planning to do when your course has finished?• When talking about the past, you can use the past perfect tense with when: · When the rain had stopped, they went outside.Grammar guide ‒ VERBSTHESAURUSwhen at or during the time that something happens: · Call me when you get home.· When I got here, the place was empty.while during the time that something is happening – used to emphasize that something is continuing: · I’ll make the salad while you set the table.· While we were on holiday, our house was burgled.whenever used in order to emphasize that something always happens when another thing happens: · He visits his mother whenever he can.· You can come and talk to me whenever you have a problem.by the time used in order to say that one thing has or will have already happened when something else happens: · By the time a child is five, he will have watched hundreds of hours of television.
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