Here are the expressing words that you can use in your class.
Expressing opinions
I think that...
I believe that...
In my opinion...
Expressing agreement
I agree that
I agree with your idea that...
Expressing disagreement
I disagree with the view point that...
On the other hand,
have you considered...?
I’m afraid I disagree
From my point of view, ...
From my perspective
That’s a good point
I think that you’re right about...
I’m afraid I can’t agree with that because...
But don’t you think...?
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