Question

There is no doubt that...

Answer 1

There is no doubt that he is qualified for the job.毫无疑问他很适合这个工作.

there is no doubt that +从句,意思是毫无疑问.

在肯定句中,doubt whether/if+宾语从句.

I doubt whether they can swim across the river.我怀疑他们能否游过河去.

在nciku的提问吧中找到的,你可以去看看