買一送一|two for one

「買一送一」可以說 two for one，或 buy one, get one free。

相關單字：
- half off「打對折」
- buy one, get one half off「買第二件商品五折」

例句：

1. The bookstore is having a two for one sale this weekend.
   書店這個周末有買一送一的活動。
2. I have a buy one, get one free coupon for Starbucks.
   我有一張星巴克的買一送一券。

內容提供 / EZ TALK
圖片來源 / Shutterstock