You would be too if you found John and David boots on sale, fifty percent off!

如果你发现John和David的皮靴打5折你也会高兴的。

I'm giving you fifty percent off a used car.

你买二手车我打五折。

The price cuts are dramatic, like forty percent off breakfast cereals, the same off bars of soap, fifty percent off soft drinks, and so on.

他们打折的力度也很夸张，早餐麦片六折，肥皂六折，软饮料五折等等。