be frightened of doing与be frightened to do 有区别吗

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.Green tonight,because she thought him dangerous.
她不害怕和陌生人跳舞（指在舞会上，表示习惯），但是今晚，她不敢和格林跳舞（很可能格林向她发出邀请，因为她觉得格林是个危险人物，不敢跳舞只是今晚这一次）

这个和be afraid to do 与 be afraid doing相似
be frightened to do 是指害怕做这个动作 比如说 我害怕跑步 i am frightened to run.
be frightened doing是指害怕这个动作所造成的结果 比如说 我害怕摔倒 i am frightened falling down.
=)

be frightened of doing 要表达的是某件事还没发生还没做 就被吓住了

be frightened to do 这个是已经被发生过的事给吓住了