Was happened

最近在文法書看到It happens that S+V ＝ s＋happens to V (表與主要動詞同時發生的動作) to have pp（表比主要動詞早發生的動作） 舉例來說.

(o) It occurs to her that there's a test on Friday. ... 發生（用法比happen正式，且說話者所指的事件較明顯）. 本文經EF Engli...

= What occurred? 但這用於每天會發生的對話中會太正式，因此用happen會比較好。 ex. It all happened so fast ...

都可以表示“碰巧”，它们在意思上没什么区别，在用法上，as it happens 可用于句首或句末。如： As it happens, I have my notebook with me. 碰...