[michèle 2]

Hi everyone.
I was just wandering if someone could tell me if there is a difference in these sentences.

1/ I think Mr Jones is going to be President.
2/ I think Mr Jones will be President.

1/ A soon as the weather clears up, we are going to walk down to the beach and go swimming.
2/ As soon as the weather clears up, we will go to the beach and go swimming.

I always use "will " with time clauses beginning with when, while, before, after, by the time, as soon as if, unless. and never the be going to form. And "will" with I think, perhaps, maybe..
Is it possible to use both? Does it have the same meaning?

Thanks for your answer.

Michèle