To show disapproval:

• I disagree with you
• I don't share your opinion
• I can't go along with you
• I doubt that...
• I disapprove of
• I don't know bout that
• I can't really see the point of...
• Oh, do you think so?
• Oh, I wouldn't say so
• Well, I'm still not convinced

Phrases to show agreement

• People are consictent with the idea of...
• People subsribe to the idea that ...
• It provides another tick in the box
• A lot of people are fanatical about...
• People maintain that
• It is highly influantial for people to
• People share the enthusiasm of...
• People are in agreement of this point
  

Phrases to show disbelief/diapproval

• People caution against the idea
• People are greeted with scaptisism
• This question is open to debate
• This is called into a question
• This opinion fell into disripute
• This question came in for a great critisism 
• People doubt that...
• People have very conservative views and...
• People diapprove of ...
• I take strong exception to smb who...
• People are preoccupied with
• It seems inconceivable to smb
• People ramain scaptical
• That confounds all expectations
• That challenges the assumtion that...
• There seems to be a little conviction amongst...