Egyetértés / I agree...

 I agree with it, totally.

Vélemény-nyilvánítás

 

That's right.

You're (absolutely) right.

You're dead right.

That's exactly it.

I agree (with you / with that).

I fully/absolutely agree.

So we are agreed.

I couldn't agree more.

We're in agreement.

I'm of the same opinion.

I share your view.

That's my opinion/myview/my impression, too.

We seem to have similar views.

I see it that way too.

We need more time.

I'm with you there.

I go along with that (hundred percent).

I think so/that, too.

I believe you're right.

We see eye to eye on this.  (We don't see eye to eye.)

There's a lot of truth in that.

 

Too true.

That's how it is.

Exactly./Precisely./Quite.

Of course.

You bet.

I like this idea.

Same here.

You can say that again.

I'm sure/certain of that.

That's correct.

You're correct in saying/think-ing that.

I support that.

I'm (very much) in favour (of doing that).

You have my full support. 

We're on the right track.

You've hit the nail on the head.

I couldn't have put it better 

 myself.

You're bang on / spot on.

(Rátapintottál a lényegre.)