I. EXAMPLES: Are you sure? 你确定吗？ Are you sure about that? 你确定吗？ Are you sure of what you said? 你确定自己说的话吗？ Are you sure that he is not coming? 你确定他不会来吗？ II. DIALOGUES: A: I've had so many problems with my new car. It's driving me crazy. A：我的新车问题真多，快把我逼疯了。 B: Are you sure you don't want to buy a new one? B：你确定不想买一个新的吗? A: How can I? I already spent a lot of money on this one. A：我怎么能退呢?我已经在这件上花了很多钱了。 B: I guess you'll be spending a lot of money on repairs then. B：我猜到时候你会花很多钱在维修上。 A: I guess so. Unless, you want to buy the car. A：我想是的。除非，你想买那辆车。 B: No, thanks. I don't think I'd want to buy your car. It has too many problems. B：不用了，谢谢。我觉得我不想买你的车。它问题太多了。 A: I don't blame you. It's a piece of junk. A：我不怪你。这辆车真破。