买两件送一件英文

Buy 2 a donated

Buy two get one free应该是这样。

three for two 就是买三个花两个的钱 买二赠一

buy one get one free...绝对正宗..商场都是这么写的:)

buy one get two free==============买一送一的英文：buy one get one free参考例句："This is a good deal: Buy 1 , get 1 free."这可是个好买卖:买一送一As a matter of fact, the salesmanship of "two for one" is a good way of advertising.买一送一的推销术，实际上是一种不错的广告。2 lether shoes purchased for the price of one买一送一(买两双皮鞋只须付一双价钱)During the small commodities sales exhiBition, customers who Buy one item will get another similar item free.小商品展销期间，买一送一，买啥送啥。