1. Giving a new opinion
I think that...
My opinion is..
I believe that..
In my view ...
Agreeing
I agree with .... because...
I would argue the same thing because...
The reason I agree with... is...
That is an interesting point because...
Building
I would like to build on ....’s point because...
I agree with ... but I need to add...
In addition to ....’s point...
Building on what ... said...
That is a good argument however it needs...
Challenging
I don’t think ... is right because...
I would like to challenge this because...
I disagree with...because...
My own view is different because...
This view is incorrect because...

2. Giving a new opinion

3. I think that...

4. My opinion is..

5. I’m not sure about this because...

6. I believe that..

7. In my view ...

8. Agreeing

9. I agree with .... because...

10. Your view matches my own because....

11. I would argue the same thing because...

12. The reason I agree with... is...

13. That is an interesting point because...

14. Building

15. I would like to build on ....’s point because...

16. I agree with ... but I need to add...

17. In addition to ....’s point...

18. Building on what ... said...

19. That is a good argument however it needs...

20. Challenging

21. I don’t think ... is right because...

22. I would like to challenge this because...

23. I disagree with...because...

24. My own view is different because...

25. This view is incorrect because...