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- R: Really? I never heard about all this. When did it happen? 真的吗?我从未听说过这件事。那是什么时候的事?
- When did it happen? 什么时间?
- When did it become a sovereign country? 这个国家是什么时候成为主权国的？
- What's the definition of extinction? When does it happen and what's the drive force of extinction in history? Can we stop extinction by human power? 灭绝的定义是什么？灭绝何时发生？历史上导致物种灭绝的原因是什么？我们能否通过人为力量来阻止灭绝？
- How did it happen that the proposal was vetoed at the Security Council? 这项提案在安理会遭到否决是怎么搞的？
- How does it happen that you know him? 你怎么会认识他的?
- Jill: Wow, that's great! When did it start? 吉儿：哇，好棒喔！什麽时候开播的?
- When did it start feeling like this? 什么时候开始觉得这样的?
- When did the Civil War begin and when did it end? 美国内战何时开始,何时结束?
- How did it happen that they had drawn nothing form her? 怎么回事，他们从她口里什么话也没有套出来?
- When did you find time to do it? 你什么时候有空做这事?
- Where and when did it originate? 它发源于何地?何时?
- ML: How did it happen that you were assigned to the UFO desk? 民盟：它是怎么发生的，你被分配到不明飞行物台？
- It was such a shock to hear that you were in an accident. How did it happen? 听到你出了意外,真是很大的震惊。是怎么发生的?
- Jeff: When did it become a competition event of sports? 杰夫：什么时候成为体育比赛项目的?
- When did it move to its present location at Moulmein Road? 哪一年搬到现在摩绵路的地点？
- When did the Pacers decide to trade him? Why did it take so long? 何时溜马决定交易阿泰?何以如此旷日费时?
- When does it behave like a liquid? 在什么时候它表现得象液体一样?
- When does it have to be finished? 什么时候必须完成?
- Boss: When does it arrive in Hamburg? 老板：它什么时候到汉堡?
