1、It happens that he is a teacher of English
恰好他是個英語教師。

2、It happens that dogs can refuse to fight from the very start.
在最開始的時候，會發(fā)生狗拒絕打架的事情。

3、It happens that his sister is a close friend of mine
碰巧他的姐姐是我的一個好朋友。

4、It happens that his sister is a close friend of mine.
碰巧他的姐姐是我的一個好朋友。

5、It happens that way but this time the improvement must come from within.
這樣的事情總會發(fā)生，但不同的是這次我們必須要從內(nèi)部挖潛。