这顿饭我请客英语怎么说

“这顿饭我请客”可以用英文表达为 "I'll treat you to this meal" 或 "Let me buy you this meal"。
这两个短语都表示 “我来付这顿饭的钱”的意思，其中 "treat" 在此处的意思是 "to give someone something, especially food or entertainment, as a pleasure or a reward"，而 "buy" 则是 "to pay money to obtain something"。
下面是一些例句：
"I'll treat you to dinner at that fancy new restaurant downtown" (我请你去市中心那家新高档餐厅吃晚饭)
"Let me buy you a cup of coffee to thank you for your help" (让我给你买杯咖啡来感谢你的帮助)
这类说法是在社交场合中使用，是对方的礼貌与礼物。