do sb a favor
owe sb sth/owe sth to sb
He owes his father $200.=
He owes $200 to his father.
a car loan
It took three years to repay my student loan.
A: Hey. I was wondering if you could do me a favor.
B: That depends. What is it?
A: It's kind of a big favor. I'm absolutely flat broke and I owe my landlady $200. She's given me until Friday to give it to her, but I don't get paid until next Monday. Do you think you could loan me some cash until I get paid?
B: I'd love to help you out, but I'm a bit short on cash this month as well. I have to get a new engine put into my car and that ate up my savings.
A: If you can't give me the full amount ,a fraction of it will still help. I'll pay you back on Monday, I promise.
a fraction of表示“少量”
B: Let's see, I've got about $50 to get me through the weekend. I can only spare about $20. I would give you more if I had it. I just don't have much money to my name right now.
A: Thanks a lot. Every little bit will help. If you aren't doing anything tonight, why don't you come over and have dinner at my place?
B: That'd be great, thanks. What time should I come over?
A: How about at six p.m?
B: See you then.