我怕雨越下越大,用英语怎么说

why are guys all using afraid?
if i were you , i would say i am worrying about that the rain will be heavier

I'm afraid that the rain will become more and more heavily.（rain 作名词）

I'm afraid that it'll rain more and more heavily.（rain 作动词）

I am afraid the rain is going to be heavier and heavier.

I'm afraid that it'll rain more and more heavily.

或是

I'm afraid that the rain will be more and more heavily.

译文: I'm afraid that it is raining heavier than heavier.

I'm afraid that it'll rain more and more heavily.