完全赞同
I am in complete agreement with you.我完全赞同你。
I couldn’t agree with you more.我完全同意你的看法。
I’m with you there！我同意你的看法。
部分赞同
I agree with you up to a point.我不是完全同意你。
反对
I'm sure it won't work.我敢肯定这行不通。