1. Let me buy you a drink. What would you like?2. Let me buy you dinner to return your favor of paying for my dinner yesterday.3. Would you like to go to dinner with me? My treat.4. I'll treat you to lunch sometime.5. I'll treat you to a movie today.6. Thank you for your help. Let me get my purse. Dinner is on me.
 buy somebody something treat somebody to something pay for something something is on somebodyBuy 用起來簡單又順口。也可以很白話的說 I'll pay for dinner. 請客有很多種英文說法，例如以下:假如你數學拿滿分我就請你喝飲料 = I'll buy you a drink if you get full marks on the math test我請你看電影 = I'll treat you to a movie晚餐我請客 = Dinner is on me