You really did me a big favor, i owe you big time你幫我一個大忙,下次好好感謝你呢! Don't worry about it!
不客氣/沒有事兒
Thank you, i owe you a favor
謝謝你,我欠你一個人情
Owe [o] v. 欠(債);欠(帳);欠(情);歸因於;歸功於;起源於,
Big time: 表示巨大
2. 除了I owe you big time 還可以用I own you one or i am in your debt
Debt [det] n. 借款;欠款;債務;負債情況;人情債;情義;恩情
You have done me a big favor.I'm in your debt.
你幫了我一個大忙,感激不盡.
I owe you one and I'm gonna pay up.
既然我欠你,我就一定要還清。