打五折的英语怎么说

"打五折"的英语表达为 "to give a 50% discount"。

"打折"这个词来自于中文，它原本指的是将物品的价格打下来，意思是降低价格。在商业场合中，"打折"通常指销售活动中降低商品的价格。

例句：

The store is offering a 50% discount on all clothing items. (商店正在提供所有服装物品50%的折扣。)
I was able to buy the shoes at a 50% discount. (我能够以50%折扣买到这双鞋。)
During the sale, they were giving a 50% discount on all items. (在活动期间，他们正在所有物品上打50%的折扣。)