A: Would you mind doing something for me?
B: I would if I could.
A: Will you please explain the meaning of this word?
B: Yes, with pleasure.
A: Could you come and spend the weekend with us?
B: Oh, I’m afraid I can’t. I’ve had a date already.
A: That’s too bad!
B: Maybe some other time.
A: Excuse me; could you lend me some of your records?
打扰一下，请问您能借给我一些你的磁带吗？B: Until when?
A: Until Monday or Tuesday of next week.
B: No problem.
A: I was wondering if you'd let me stay here for a few days.
B: It really depends on when and how long.
A: Until next weekend, if that's OK.
B: Let me think it over, and I'll let you know later.