Something strange happed last night.

昨晚发生了一些奇怪的事情。

A miracle happed when they least expected it.

当他们最不期望时，奇迹发生了。

It happed so quickly that no one could react.

它发生得如此之快，以至于没有人能反应过来。

The accident happed right in front of my eyes.

事故就在我眼前发生了。

The unexpected event happed during the meeting.

意外事件在会议期间发生了。

The story happed in the spring of 1945.

故事发生在1945年的春天。

Dont cry berause it over, smile because it happed.

不要因为完结而哭泣, 要为曾经发生面微笑.

I remember quite clearly nom when the story happed.

我仍清楚地记得故事发生的时候。

Perfect infinitive means the action happed before the main verb.

完成不定式表示动作发生于主要动词之前.

The mine flooding happed during construction of the air shaft in Qidong Coal Mine.

祁东煤矿风井在建井过程中,发生钻井井壁突水事故,井筒被淹.