A：I do beg your pardon for the mistake I’ve made.
      请您一定原谅我所犯的错误。

B：It’s OK. That can happen to the rest of us.
      没关系，谁都会发生这种事情。

A：Excuse me. Could you please break this five into some coins for me? I want to make a call.
      对不起，打扰一下。您能帮我把这张五元钱换成零钱吗？我想要打个电话。

B：Sure. What would you like?
      可以。您想要怎么换？

A：How about two dollars in quarters and the rest in dimes and nickels?
      二十五美分的换两元，其余的换成十美分和五美分的。

B：Let me see. Good, I happen to have enough. There you go.
      让我看看，也许…还行，我正巧有这些硬币。给你。

A：It's so kind of you.
      非常感谢。

happen的反义词

B：Not at all.
      不客气。

A：We’re supposed to check in at the Air China’s counter 30 minutes before take-off, Joe.
      我们得在起飞前30 分钟到中国国际航空公司柜台前检票，乔（人名）。

B：Yes, I know. The boarding time on the ticket says 17:05, and now it’s 16:15. I guess we have plenty of time.
      我知道。机票上写的登机时间是17 点5 分，现在是16 点15 分。我看我们的时间还很充裕。

A：Do we need to show our ID cards when checking in?
      检票登机的时候要出示身份证吗？

happen的解释

B：Yes. It’s essential.
      当然，这是最基本的。

A：What about our luggage?
      我们的行李怎么办？

happen的解释

B：We can check it and hand carry the small bags. And we have to open each for inspection.
      行李可以托运，小的包裹随身带着。我们还得把每个包裹都打开以供检查。

A：Are they going to frisk all the passengers?
      他们要搜查每个乘客的身体吗？

happen的意思

B：I think so. We certainly don’t want a highjack to happen on the plane today.
      我想是的。我们当然不希望在今天的飞机上发生劫机事件。

1. （偶然）发生，出现
    Something that happens occurs or is done without being planned.

    e.g. We cannot say for sure what will happen...
           我们无法确定会发生什么事。
    e.g. The accident happened close to Martha's Vineyard.
           事故发生在玛莎葡萄园附近。

2. （作为结果）发生，产生
    If something happens, it occurs as a result of a situation or course of action.

    e.g. She wondered what would happen if her parents found her...
           她不知道如果父母找到自己会有什么结果。
    e.g. He trotted to the truck and switched on the ignition. Nothing happened.
           他匆匆走向卡车并转动点火开关，结果没有任何反应。

3. （尤指不愉快的事）发生（在…身上）;(某人)遭到;遇到
    When something, especially something unpleasant, happens to you, it takes place and affects you.

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    e.g. If we had been spotted at that point, I don't know what would have happened to us...
           如果当时我们被发现了，我不知道会有什么后果。
    e.g. It's the best thing that ever happened to me.
           这是我所遇到的最好的事情了。

4. 碰巧;凑巧
    If you happen to do something, you do it by chance. If it happens that something is the case, it occurs by chance.

    e.g. We happened to discover we had a friend in common...
           我们凑巧发现我们有一个共同的朋友。
    e.g. I looked in the nearest paper, which happened to be the Daily Mail...
           我仔细看了一下离自己最近的那份报纸，正巧是份《每日邮报》。

5. 碰巧，恰恰（尤引出令人意外的事）
    You use as it happens in order to introduce a statement, especially one that is rather surprising.

    e.g. She called Amy to see if she had any idea of her son's whereabouts. As it happened, Amy had.
           她打电话给埃米，看她是否知道自己儿子的行踪。埃米还真就知道。