no obj.
1
- take place; occur发生：
the afternoon when the disturbance happened.
发生骚动的那个下午。
1.1
- ensue as an effect or result of an action or event（作为后果或结果）出现, 发生：
this is what happens when the mechanism goes wrong.
这就是机械系统发生故障时会出现的情况。
1.2
- with infinitive chance to do something or come about碰巧, 恰好：
we just happened to meet Paul
我们正好碰见了保罗
there happens to be a clash of personalities.
碰巧存在个性的碰撞。
1.3
- with clause come about by chance偶然发生：
it just so happened that she turned up that afternoon.
碰巧她在那个下午出现了。
1.4
happen on
find or come across by chance偶然遇到; 偶然发现。
1.5
- with infinitive used as a polite formula in questions［问句中的礼貌惯用语］：
do you happen to know who her doctor is?
您知道她的医生是谁吗？
2
- happen to be experienced by (someone); befall使遭遇, 降临到…身上：
the same thing happened to me.
同样的情况在我身上也发生过。
2.1
- become of发生于：
I don't care what happens to the money.
我不在乎这笔钱的下落。
sentence adverb
- N. English perhaps; maybe〈北英格兰〉或许, 大概：
happen I'll go back just for a while.
也许我会回去一下。
短语
as it happens
- actually; as a matter of fact实际上, 事实上：
we've got a room vacant, as it happens.
实际上我们有一间房空着。
词源