Expressions for Agreeing and Disagreeing

Stating an opinion	In my opinion... The way I see it... If you want my honest opinion.... According to Lisa... As far as I'm concerned... If you ask me...
Asking for an opinon	What's your idea? What are your thoughts on all of this? How do you feel about that? Do you have anything to say about this? What do you think? Do you agree? Wouldn't you say?
Expressing agreement	I agree with you 100 percent. I couldn't agree with you more. That's so true. That's for sure. (slang) Tell me about it! You're absolutely right. Absolutely. That's exactly how I feel. Exactly. I'm afraid I agree with James. I have to side with Dad on this one. No doubt about it. (agree with negative statement) Me neither. (weak) I suppose so./I guess so. You have a point there. I was just going to say that.
Expressing disagreement	I don't think so. (strong) No way. I'm afraid I disagree. (strong) I totally disagree. I beg to differ. (strong) I'd say the exact opposite. Not necessarily. That's not always true. That's not always the case. No, I'm not so sure about that.
Interruptions	Can I add something here? Is it okay if I jump in for a second? If I might add something... Can I throw my two cents in? Sorry to interrupt, but... (after accidentally interrupting someone) Sorry, go ahead. OR Sorry, you were saying... (after being interrupted) You didn't let me finish.
Settling an argument	Let's just move on, shall we? Let's drop it. I think we're going to have to agree to disagree. (sarcastic) Whatever you say./If you say so.