Using the "not" means you think it's more likely that it's not the case.
Could anyone show me an example for this please? I can't think of an appropriate context. "whether it is... / whether it is not..." is a question I have always been wondering, but I don't have a particular sentence at hand.
Originally Posted by Barb_D
In your first example, I think it's probably right. But I may be mistaken and in fact it's wrong. So I ask you to confirm that it's NOT a mistake.
Its not as common I think but it's not wrong.
I'm having difficulties understanding what these "it" means. Soryy for my poor reading skills.