1.you're off.你完蛋了
2.you've got that/it wrong.你已经把他搞砸了
3.you've got it all wrong.你把一切都搞砸了
4.you couldn't be more off-base.我们不能再大错特错了
5.not a chance.不是偶然
6.i couldn't disagree with you more.不能再相信你了
7.you're dead wrong.你彻底错了
8.that's a big,fat lie.那是一个天大的谎言
个人之见