dinner is on me. 晚饭我请。you ask for it! 活该！you don't say! 真想不到！ get out of here! 滚出去！ how come… 怎么回事，怎么搞的。 don't mention it. 没关系，别客气。it is not a big deal! 没什么了不起！ thousand times no! 绝对办不到！who knows! 天晓得！ have a good of it.玩的很高兴。don't let me down. 别让我失望。 it is urgent. 有急事。can i have this. 可以给我这个吗？ it doesn't take much of you time. 这不花你好多时间。
