Question

be afraid of 和 be afraid to的区别(请详细一些)

Answer 1

be afraid to do something=be unwilling to do something because you are frightened(因为害怕而不敢、不乐意做某事）；
be afraid of doing something= be worried or anxious about something that might happen(担心或忧虑某事可能发生）。
两者的区别，我写个例句就知道了。

she was not afraid of dancing with strangers,but she was afraid 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）

Answer 2

be
afraid
of
doing
sth.害怕做sth.
：he
is
afraid
of
falling
down
the
steps.
be
afraid
to
do
不敢做sth:
he
is
afraid
to
go
home.