Here are useful expressions / sentences you should learn by heart
Here is my point of view …
As far as I’m concerned, I think that …
I think that …
I guess that …
I believe that …
In my opinion / in my view / to my mind / …
What I mean is that …
I (totally) agree with x on … = I see eye to eye with X about …
I share x’s opinion, that….,
I think the same as x, you, that…
Like X, I hold the opinion that…
I think X is right when he / she says that … because …
Yes, I think so.
True enough
That’s quite true. / That’s right.
I (totally / completely) disagree with X
I don’t agree with X
I can’t help thinking that X is totally wrong when he / she says that …
No, I don’t think so.
This may be true to some extent / to a certain extent / to an extent but …