表示同意某人观点

1. Exactly.

2. I could't agree more.

3. That's just what I was thinking.

4. You know, that's exactly what I think.

5. That's a good point.

表示不同意某人观点

1. Yes, that's quite true, but …

2. I'm not sure if I agree …

3. Well, you have a point there, but …

4. Maybe, but don't you think that …

对熟悉的人

1. Are you kidding?

2. Don't make me laugh?