Be frightened to do ,不敢去做某事 be frightened of doing一向害怕做某事,表示习惯 she was not frightened of dancing with strangers,but she was frightened to dance with mr. 1、be frightened of:although, i would be frightened at seeing this if i was a meat eater. I was frightened 近似的还有frightening,但是frightening一般是指某件事,例如: the number of.