dinner is on me 晚饭我请客;晚饭我请

【例句】
I'll get my purse, and dinner is on me, okay?
我去拿我的包晚饭我请好吗？

Mother, brother, too! Rest assured, henceforth, dinner is on me.
妈妈，哥哥，太棒了！放心吧，今后，晚饭仍包在我身上好了。