I don't agree with you./I don't agree at all.

我不贊同你/我根本不認同

You're completely wrong.

你完全錯了。

You couldn't be more wrong.

你大錯特錯。

You've got it totally wrong.

你完全錯了。

I'm afraid you missed the point here.

恐怕你誤解了。

I won't go along with this.

我不同意這個。

It would never work.

那決定行不通。

I doubt that's true./I don't think so./I don't think that's true.

我懷疑那是真的/我不這么認為/我不覺得這是真的

That can't be right.

那不可能是對的。

I don't see it that way.

我不這么看。

We don't see eye to eye on this issue.

在這個問題上我們意見不一致。

Dialogue1:

A: What do you think of this plan?

你覺得我的計劃怎么樣？

B: Have you thought of the consequences of your idea?

你有沒有想過你的想法可能造成的后果？

Dialogue2:

A: Okay, that might work, but don't you think there's a better solution?

好吧，那或許有效果，但是你不覺得有更好的解決辦法？

B: I think John has a better solution to this problem.

我認為約翰在這個問題上有更好的解決辦法。

Dialogue3:

A: That's my suggestion to this issue.

這是我對這個問題的建議。

B: I understand where you're coming from, but I think there's a better solution.

我明白你的出發點，但是我認為有更好的解決方案。