1. When did you last see Margaret?
    你上一次见到玛格丽特是什么时候？

1. We have only three books when we need five.
    虽然我们需要五本书，却只有三本。

2. We'll start when the team leader comes.
    队长一来，我们就出发。

B：When is the (assignment/ project/ report) due?
      什么时候交（作业/计划/报告）？

A：It’s due tomorrow.
      明天。

when的解释

A：When is your parents’ wedding anniversary?
      你父母的结婚纪念日是在哪天？

B：Their anniversary is in August.
      他们的结婚纪念日是在八月。

A：When do we (board/ depart/ arrive)?
      我们什么时候（登机（船）？/离开？/到达）？

B：At 6:49pm.
      下午6点49分。

1. when是什么意思

1. 当......时：-->是I met your sister那当时(when)的特定那一个(指明; 也是关系子句的(形容词)功能) 夜晚.

1. When you are in a foreign country, youmust follow the customs
    当你在外国时，你必须遵守当地习俗。

2. /u0064/u0061/u006E/u0063/u0069/u002E/u0039/u0031/u0031/u0063/u0068/u0061/u002E/u0063/u006F/u006D

2. When you are in a foreign country, youmust follow the customs there.
    当你在外国时，你必须遵守当地习俗。

3. When I find my soulmate, she will receive my undying love and respect.
    当我找到我伴侣，她会得到我永远的爱和尊重。

4.

4. Ask your guide to clap when you are standing in front of the North staircase, if done from the proper spot you will hear the call of what is thought to be the Quetzal bird.
    问问你的指导鼓掌当你站在北楼梯，如果做了适当的位置将听取您的要求是什么被认为是格查尔鸟。

5. I am always amazed when I heard people saying that sport creates goodwill between the nations, and tha t if only the common peoples of the world could meet one another at football or cricket, they would have no inclin ation to meet on the battlefield.
    每当我听说体育运动能够在国家间建立起友好感情，说世界各地的普通人只要能在足球场或板球场上相遇就会没有兴趣在战场上相遇的话，我都倍感诧异。

6. It concerns me when young people like this servant girl see that kind of attitude or behavior.
    我担忧的是，像那使女一样的年轻人也会看到这种的态度或行径。

7. When the hard disk hardware failure, we will all these happen, such problems in the hard disk in the CMOS to recognize the hard drive, very smooth plate recognition, but they could not enter the system, partition and format can not be normal.
    当硬盘硬件出现故障时，也会出现上述的情况，此类问题硬盘在CMOS里能够认到硬盘，认盘很顺利，但就是进不了系统，无法正常分区和格式化。

8. But when I have free time, I am very humdrum.
    但一旦我有了空闲时间，我却很无聊。

9. 好好学单词·英语单词

9. Economists cannot predict with any great degree of accurancy just when an upturn or a downturn will occur, but a study of such cycles does show that business activity tends to follow some kind of wavelike pattern and is not merely an assortment of random moves.
    经济学家们无法十分准确地预测究竟什么时候商业会出现好转，什么时候会出现疲软。但是对商业周期的研究显示了：商业活动总是沿着一种波浪形的方式发展，而不是各种各样无规则的胡乱的运动方式

10. 好好学单词·英语单词大全

10. Although the term potluck suggests a random assortment of dishes, it s likely to turn out better when the host does some kind organization by discussing with and assigning your guests a specific course or beverage to bring along.
    尽管 potluck 一词含有随意携带食物之意，倘若主人与客人商议并分配下各自应带食品或饮料，效果可能会好得多，不然就有可能出现客人都只带餐后甜点的情况

11. It was as when an ass breaks into a field and eats the staning corn, and the children of the village beat him with sticks.
      只要看到阿伽门侬在前排冲杀，你就要回避，因为这天是他好运日，是他给自己赢得伟大荣誉的日子。

12. 911查询·英语单词

12. Known as an igneous intrusion, the 1, 267-foot-tall (386-meter-tall) Devils Tower in Wyoming formed when molten rock intruded into the existing rocks.
      坐落在怀俄明州的1267英尺（386米）高的魔鬼塔，是熔岩侵入到先存的岩石中形成的，也就是我们知道的侵入岩。

13. when的解释

13. Photo Gallery: Rocks Known as an igneous intrusion, the 1, 267-foot-tall (386-meter-tall) Devils Tower in Wyoming formed when molten rock intruded into the existing rocks.
      意译：岩石图片美术馆。被认为是火的侵扰，魔鬼塔高1267英尺（386米）位于怀俄明州成形的当融化的岩石侵入到现有的岩石里面。

14. When an opportunity comes, it brings a promise but never realizes it on its own.
      没当机遇降临，伴之而来地时成功地希望，但时机遇不能自绗实现成功。188。

15. He is the Lord of Heavenly light, protector of truth, and is invoked when a contract or oath is taken.
      他是神圣之光的主，当履行盟约和誓言的时候，是真理的保护者和调用者。

16. WHEN MENTIONED SINGATURE PHOTOS, I ALWAYS DON`T KEEP UP MY MIND WHETHER TO BUY OR NOT.
      对于签名照，我一直有一种想要又不想要的矛盾心理。

17. 911查询·英语单词

17. Champa Dorje boarded the shuttle and said to them, Usually, when we`re out and about they don`t dare present a plea. They don`t know which lama can help them with their problems. At the same time, we don`t like to show ourselves on purpose.
      协巴多杰上了梭，对二人说：「我们平时出来，他们不敢求情，谁也不知道哪位喇嘛能帮他们解决问题。

18. When I was a little kid, my parents would always play Amy Grant's songs at Christmas, so her songs still bring back all my childhood Christmas memories.
      当我还是孩子的时候，我的父母就经常在圣诞节演奏Amy Grant的歌，所以她的歌还能把我带回童年关于圣诞的回忆。

19. During the studying of thermal-decay of LPGs, we proposed firstly that the anneal parameter is larger than 14900, LPGs can operate steadily for 25 years under 27℃ after LPGs were annealed. Moreover, we observed for the first time that the resonance peaks in the lower-order mode of LPGs shift to red wavelength after LPGs experienced annealing or natural-decay. We believed that the phenomenon is because that the formations of LPGs don't cease when UV-exposure ceases.
      在对长周期光栅的热衰变规律研究中，我们首次发现，长周期光栅经历热退火及自然衰变后，其低阶模的谐振波长发生了红移现象，我们认为这种现象是由于结束紫外曝光时，长周期光栅的形成并没有停止，相反光栅的形成在紫外光照结束后的1小时内才停止，这种现象的提出为光纤光栅的形成机制提供了新的解释。

20. When it reaches the extent that can bring a heartquake, it can come down for generations as a kind of style.
      当它达到振撼人心的程度，便可以成为一种风格而流传于世。

1. (用于疑问句)什么时候，何时
    You use when to ask questions about the time at which things happen.

    e.g. When are you going home?...
           你什么时候回家？
    e.g. When did you get married?...
           你什么时候结的婚？

2. (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.

    e.g. 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。
    e.g. 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. (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.

    e.g. 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. (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.

    e.g. 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。
    e.g. 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. (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.

    e.g. I asked him when he'd be back to pick me up...
           我问他什么时候回来接我。
    e.g. I don't know when the decision was made...
           我不知道决定是什么时候作出的。

6. (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.

    e.g. 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。
    e.g. 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。

7. (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.

    e.g. How can I love myself when I look like this?...
           我这个样子，怎么能对自己满意呢？
    e.g. 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. (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.

    e.g. 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。
    e.g. 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。