be afraid of 后面为什么加to do ,而不是doing?

be afraid of 后面为什么加to do ,而不是doing? Don't be afraid of making mistakesmakeinh为什么加ing Don't be afraid of change, you may lose out on something good. 为什么lose out后面要加on如题,不加on行不行 Don’t be afraid of it,这里为什么要加of it? Don't be afraid of being laughed at when you begin to learn English.laugh后面没有接人为什么还加at? Don't be afraid 为什么要加be I'm afraid you can't have a look.afraid是形容词,后面为什么加look? I'm afraid that I can't.为什么afraid后面没有跟of be afraid for 后面加什么 be afraid of 后面接什么 be afraid for和be afraid of的区别 Don't be afraid _____ my health.I'm much better now.为什么填of 而不是填for Don't be afraid of change. 用Don't be afraid of 造句 Don't be afraid of ______(fail) Don't be afraid of make mistakes Don't be afraid of being laughed at.这句话laugh为何加ed,be为何边being?同上, You ____________ afraid of the difficulties.为什么填 dont‘t need to be? be worry 后面加什么介词be angry 后面加什么介词?be afraid 后面加什么介词?