Useful Phrases - Expressing Certainty and Giving a Reason

Expressing One´s Opinion and Different Levels of Certainty:  

I think it must be a fake because...

In my opinion he must have forged the signature there....

I would say he can/ could/ may/ might be released on bail....

I believe it ...

I would believe he is innocent ...

My belief is that ...

I think so x I don´t think so

I hope so x I hope not

I expect so x I don´t expect so

I suppose so x I don´t suppose so

Linking words giving a reason

as, since, because, because of, due to/ owing to...

Adding information

moreover, what is more, apart from, besides, on the top of it ...