题目内容：

doubt 用法
I doubt whether/if
I don't doubt that
There's some doubt whether
There's hardly/no/little doubt that

优质解答

I doubt whether/if
我怀疑……
I don't doubt that
我毫不怀疑……
There's some doubt whether
这里有一些疑点/疑问
There's hardly/no/little doubt that
这几乎/没有/毫无疑问,