be afraid to do 与 be afraid of doing 有什么区别?

be afraid to do 与 be afraid of doing 有什么区别? 英语中be afraid of doing be afraid to do 有什么区别? be afraid of doing 和 be afraid to do 区别 be afraid of doing 与be afraid to do 的区别 be afraid of doing 与 be afraid to do 的区别 be afraid to do 与 be afraid of 区别 be afraid of 与be afraid to do 区别. 请问be afraid to do 和be afraid doing 有什么区别? be afraid of和be afraid to有什么区别 be afraid to do 和 be afraid doing 的区别? be afraid of与be afraid to 有什么不同 be afraid to do sth be afraid of doing sth