如果是朋友关系A: Hi, B. Are you free this weekend? Cos I know a good restaurant on discount lately.B: Sorry mate. I've got an exam on Monday. You know, just need to do whatever I can.A: Won't hurt if you just take a couple of hours out having a lunch outside.B: Nah, I can't get myself back to the library once I get out of there. You know what, if I do a good job in that exam, I'll be buying.A: A word is a word. Good luck!如果是感情戏A: Hello, B. Would you like to go out for a lunch with me this weekend? I know a nice place at the beach and the food is terrific.B: Oh that's wonderful. But I'm afraid I can't go this weekend. My assignment is due next week and I've still got a load of work to do.A: Well, yes, I understand.B: Look, I really want to go with you. This weekend is simply a bad time for me to go out. How about next weekend, if you still want to.A: Oh, really? I mean, sure. Next weekend then.B: Well, OK, given that my assignment doesn't kill me this weekend.A: I can help with the assignment. I mean, I don't know about your stuffs but I can ... type.B: Thank you. How sweet. I would let you know when the typing becomes too much for me. Enjoy the weekend.A: Thanks, you too.B: I'll try.