1) I couldn't agree more! 我完全同意！

比如说这样的句子:
例一：YWW的留言：
Hi, Andy
You are great. That's real English teaching, and the music is quite fun.
One point to make: too much Chinese!

funny紧跟留言:
Agree with YWW (I couldn't agree more with YWW).
Exposing more English will be more helpful.
Just for your consideration. Thanks anyway.

例二： Andy老师的女朋友：

Andy's girlfriend should be pretty!

I couldn't agree more!

不同意你的观点,或者说对于你的话我漠不关心!