Examples

Woman A: What was the party like last night?
昨晚的聚会如何？

Woman B: Oh, it was awful! All these kids crashed it and drank all the beer.
太棒了。这些孩子们不请自到，喝光了所有的啤酒。

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Man A: How are the preparations going for the party tonight?
晚会准备得如何？

Man B: Yeah, not bad.
还行。

Man A: Aren't you worried it might get gatecrashed?
你担心有人会不请自到吗？

Man B: Yeah, we’re going to pay a guy to be on the door to stop people coming in.
是的，我们会请个人在门口检查，阻止外人进来。

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Wang Fei: 在第一个例句中说话者说他参加的晚会非常糟糕，因为很多孩子们不请自到，kids crashed the party. 这里的 to crash the party 就是 to gatecrash the party 的缩略形式。

William: Yes. And in that second example, the speaker said that he was going to pay a guy to be on the door.

Wang Fei: To be on the door 就是把门的意思。The man on the door 就是在门口检查所有来参加者都是得到邀请来的。嗯，do you think that there might be someone on the door at this party tonight, William?

William: You mean the celebrity party in Cannes with George and Jack and Tom? Yeah, I think there might be, Wang Fei.

Wang Fei: (crestfallen) Ah.

William: Well, I'll tell you what; my friend's having a birthday party in the pub down the road. Why don't you come to that instead? You'll be a little bit overdressed but I'm sure it will be fun for you.
我告诉你：我朋友在路边的俱乐部正在举办生日聚会，你为什么不来这个呢？你穿着太考究了，但是你会过得很有趣。

Wang Fei: I was just looking forward to a bit of glamour for a change, with George and Jack and...

William: ...and Tom, yes I know. Well, one day, Wang Fei, if you keep making great programmes with BBCUKChina.com, then one day I'm sure you'll be mixing with George and Jack and Tom.

Wang Fei: 但是现在，今天就在酒吧委屈一下了。Again. (sigh) Hmmm. Bye!