How to express your opinion

Expressing opinion
I think...
As far as I'm concerned,..
To my mind,...
According to me,...
As I see it, ...
It seems to me that...
In my point of view / my opinion,....

From my point of view...
I am of the opinion that...
I take the view that. ..
My personal view is that...
In my experience...
As far as I understand / can see/see it,...

Agreeing or disagreeing

Agreeing with an opinion:

I agree with this opinion.
I completely agree with this view.
This is absolutely right.
I couldn't / can't agree more.

Partial agreement:

I agree with this point of view, but...
This idea is right, but...
I agree with you, but...

Disagreeing with an opinion:

I'm afraid. I can't agree with you.
I disagree with you.
I don't agree with you.
I'm not sure I agree with you
I think you're wrong