•No one knows exactly what happened but several people have been hurt.没人确实了解发生了甚么事，只知道有数人受伤。

•Anything could happen in the next half hour.接下来的半小时内甚么事都可能会发生。

•A funny thing happened in the office today.今天，办公室里发生了一件有趣的事。

•I don't like to think what might have happened if he'd been driving any faster.我不愿意去想假如他再开快一点的话会怎么样。

•I don't know what I'd do if anything happened to him (= if he was hurt, became ill, or died).我不知道一旦他出了事我该怎么办。

•What happened to your jacket? There's a big rip in the sleeve.你的夹克怎么了？袖子上裂了一条大痕。

•What's happened to my pen (= Where is it) ? I put it down there a few moments ago.我的钢笔哪里去了？我刚刚把它放在那里。

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•[+ to infinitive] They happened to look (= looked by chance) in the right place almost immediately.他们碰巧几乎一下就找对了地方。

•[+ (that)] Fortunately it happened (that) there was no one in the house at the time of the explosion.幸运的是，爆炸发生时，屋子里没有人。

•[+ that] It just so happens that I have her phone number right here.非常凑巧，我正好有她的电话号码。

•She happens to like cleaning (= She likes cleaning, although that is surprising).她刚好就喜欢打扫清洁。

•I happen to think he's right (= I do think so, although you do not).我真的认为他是对的。

•I'd have drowned if he hadn't happened along and pulled me out of the river.要不是他碰巧走过，把我从河里拉上来，我可能已经溺死了。

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•Eventually they happened on a road leading across the desert.最后，他们偶然找到了一条穿越沙漠的路。

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•Happen it'll rain later on.过一会儿可能会下雨。