| 主要翻译 |
| when adv | (at what time?) | SCSimplified Chinese 什么时候 shén me shí hòu
TCTraditional Chinese 什麼時候 |
| | | SCSimplified Chinese 何时 shén me shí hòu ，hé shí |
| | When did she leave work? At three o'clock? |
| | 她什么时候下班的？三点钟? |
| when adv | (at which time?) | SCSimplified Chinese 哪个时候 něi gè shí hòu
TCTraditional Chinese 哪個時候 |
| | | SCSimplified Chinese 什么时候 něi gè shí hòu ，shén me shí hòu
TCTraditional Chinese 什麼時候 |
| | When did she leave? Was it at four or five PM? |
| | 她哪个时候离开的？是下午四点还是五点? |
| when adv | (how soon?) | SCSimplified Chinese 多快 duō kuài |
| | | SCSimplified Chinese 多久 duō kuài，duō jiǔ
TCTraditional Chinese 多久 |
| | | SCSimplified Chinese 何时 duō kuài，hé shí |
| | When can you leave? |
| | 你还要多久能离开？
|
| when adv | (how long ago?) | SCSimplified Chinese 多久以前 duō jiǔ yǐ qián |
| | When did she leave? Twenty minutes ago? |
| | 她多久以前离开的？二十分钟前？ |
| when conj | (if) | SCSimplified Chinese 如果 rú guǒ
TCTraditional Chinese 如果 |
| | When it rains, all traffic stops. |
| | 如果下雨，所有交通都会停止。
|
| when conj | (whereas) (转折语) | SCSimplified Chinese 而，然而，可是 ér，rán ér，kě shì
TCTraditional Chinese 而，然而，可是 |
| | What are you doing in Madrid when you are supposed to be in Paris? |
| | 当你应该在巴黎时，你在马德里做什么？ |
| when conj | (at the point in time that) | SCSimplified Chinese 当…的时侯 dāng … de shí hòu |
| | | SCSimplified Chinese 在…时 dāng … de shí hòu ，zài … shí
TCTraditional Chinese 在...時 |
| | This was all happening when he suddenly arrived home. |
| | 事情正在发生时他忽然回来了。
|
复合形式：
|
| at the time when adv | (during that period) (过去的某个时间) | SCSimplified Chinese 当…的时候 dāng de shí hòu |
| | At the time when dinosaurs roamed the Earth, there was no human life. |
| back when adv | (at a time in the past when) | SCSimplified Chinese 当…时 dāng shí
TCTraditional Chinese 當...時 |
| | | SCSimplified Chinese 回到…时 dāng shí，huí dào shí |
| | Back when I was a boy, there was no such thing as Nintendo Wii. |
| if and when expr | (possibly in the future) | SCSimplified Chinese 如果那时 |
| | | SCSimplified Chinese 只有当....的时候 |
| | I'll start celebrating if and when we manage to sell the house. |
inquire whether/when/how,
enquire whether/when/how vtr | formal (with clause: ask) | SCSimplified Chinese 问 wèn
TCTraditional Chinese 問 |
| | | SCSimplified Chinese 询问 wèn，xún wèn
TCTraditional Chinese 詢問 |
| | Fred inquired whether Larry had time to help him move this weekend. |
| | Lucie enquired when the next train for King's Cross departed. |
| | 弗莱德询问拉里这周末是否有时间帮他搬家。// 露西询问开往国王十字车站的下一趟火车何时出站。 |
inquire as to whether/when/how/who/what,
enquire as to whether/when/how/who/what vtr | formal (with clause: ask) | SCSimplified Chinese 询问 xún wèn
TCTraditional Chinese 詢問 |
| | I am writing to inquire as to whether your company has any vacancies. |
| | 我来信是想询问贵公司是否有职位空缺。 |
| instruct [sb] that/when/where⇒ vtr | (with clause: inform [sb]) (接从句) | SCSimplified Chinese 告知 gào zhī |
| | | SCSimplified Chinese 通知 gào zhī ，tōng zhī
TCTraditional Chinese 通知 |
| | The officials were instructed that their duties included ensuring health and safety rules were adhered to. |
| no matter when adv | (at whatever time) | SCSimplified Chinese 无论何时 wú lùn hé shí
TCTraditional Chinese 無論何時 |
| | | SCSimplified Chinese 随便什么时候 |
| | You can always phone me, no matter when. |
| no matter when expr | (with clause: regardless of when) | SCSimplified Chinese 不管何时 bù guǎn hé shí
TCTraditional Chinese 不管何時 |
| | No matter when I go, there always seems to be a long queue. |
| only when necessary adv | (strictly as required) | SCSimplified Chinese 只在必要时 zhī zài bì yào shí |
| | You must take the pain killers only when necessary. |
pigs might fly,
pigs can fly,
when pigs fly expr | (that will never happen) | SCSimplified Chinese 不可能的事 bù kě néng de shì |
| | | SCSimplified Chinese 异想天开 bù kě néng de shì，yì xiǎng tiān kāi
TCTraditional Chinese 異想天開 |
| Say when! interj | informal (indicate [sth] is enough) | SCSimplified Chinese 够了就请告知 |
| | | SCSimplified Chinese 好了就说一声 |
| | As the hostess began to pour wine into her guest's glass, she cried, "Say when!" |
| Since when? interj | informal, expressing surprise (for how long?) | SCSimplified Chinese 从什么时候开始？ |
| | Ned and Ellie are going out? Since when? |
| since when expr | informal, expressing disapproval (how long ...?) | SCSimplified Chinese 什么时候开始 |
| | | SCSimplified Chinese 何时起 |
| | Since when have you been in charge? Stop telling me what to do! |
| since when expr | (from that time) | SCSimplified Chinese 从那时起 cóng nà shí qǐ
TCTraditional Chinese 從那時起 |
| | Olivia joined the company two years ago, since when she has instigated several major changes. |
| when all is said and done adv | informal (ultimately) (非正式用语) | SCSimplified Chinese 最后，结果，尘埃落定 zuì hòu，jié guǒ，chén āi luò dìng
TCTraditional Chinese 最後，結果 |
| | When all's said and done, you've no right to an opinion on this. |
| when else conj | (at what other time) | SCSimplified Chinese 其他什么时候 |
| | If you can't see me today, I don't know when else we'll be able to get together. |
| when else adv | (at another time) | SCSimplified Chinese 别的什么时间合适？ |
| | If not now, when else? |
When in Rome ...,
When in Rome,
do as the Romans do expr | (act according to local customs) | SCSimplified Chinese 入乡随俗 |
| when it comes down to it expr | (when push comes to shove) | SCSimplified Chinese 一旦情况紧急 |
| when it comes to [sth] expr | (with regard to) | SCSimplified Chinese 说到，谈到 shuō dào，tán dào
TCTraditional Chinese 談到 |
| | I love to read, but I have trouble when it comes to studying science. |
| | 我喜欢读书，不过一说到科学课我就不行了。 |
| when push comes to shove expr | figurative, informal (when the situation becomes critical) | SCSimplified Chinese 到了紧要关头 |
| | | SCSimplified Chinese 事态严重时 |
| | Two of my colleagues don't really like each other, but when push comes to shove, they'll work together to make sure a project gets finished on time. |
| when the chips are down adv | informal, figurative (in a difficult situation) (非正式用语，比喻) | SCSimplified Chinese 最后，结果，尘埃落定 zuì hòu，jié guǒ，chén āi luò dìng
TCTraditional Chinese 最後，結果 |
| | When the chips are down, are you brave enough to keep going? |
| when the s*** hits the fan expr | vulgar, offensive, informal (when disturbing facts become public) | SCSimplified Chinese 暴露于众 |
| | | SCSimplified Chinese 公之于众 gōng zhī yú zhòng |
| when your ship comes in expr | figurative (when you are rich or successful) | SCSimplified Chinese 当你成功时 |
| | | SCSimplified Chinese 当你有了钱 |