Agree and Disagree

There are many ways to agree and disagree in English, and here are some simple examples:

To agree:

I agree with you.
That's exactly what I was thinking.
I see your point.
You're absolutely right.
To disagree:

I'm not sure I agree with you.
I'm afraid I have to disagree with that.
I see things differently.
I'm sorry, but I don't think I can agree with that.
Of course, there are many other phrases and sentences you can use to agree or disagree in English, but these should give you a good starting point. Remember to always be polite and respectful in your language, regardless of whether you agree or disagree!