Asking and Giving Opinion

A. Asking for an Opinion

Formal:
1. Have you got any comment on ....?
2. Do you have any opinion on .... ?
3. What is your reaction to .... ?
Informal :
1. What do you think of ....?
2. What do you think about .... ?
3. What's your opinion of .... ?

B. Giving an Opinion
Formal :
1. Personally, I consider ...
2. I hold the opinion ....
3. My own view of the matter is .....
Informal :
1. I think ...., I reckon ....
2. I really think ...
3. In my opinion, ...