frighten用法简要说明
1. 表示害怕某事物，通常用be frightened of。如：
The little child was frightened of the dog. 这个小孩怕狗。
be frightened of doing sth和be frighten to do sth均表示害怕做某事，但有区别，前者多指担心会发生某情况，后者多指不敢做某事。如：
He was frightened of losing power. 他害怕失去权力。
I was frightened to look down from the top of the tall building. 我从高楼顶上往下看，感到害怕。
2. 要表示吓唬某人做某事，英语通常用frighten sb into doing sth。如：
News of the robberies frightened many people into fitting new locks to their doors. 发生抢劫的消息把许多人吓得装上新门锁。
若表示吓唬某人做某事，英语通常用frighten sb out of doing sth。如：
He frightened her out of signing the paper. 他恐吓她，让她不敢在文件上签字。