i'm not going.我不去了。 does it serve your purpose?对你有用吗? i don't care.我不在乎。 not so bad.不错。 no way!不可能! don't flatter me.过奖了。 your are welcome.你太客气了。 it is a long story.一言难尽。don't play possum!别装蒜! make it up!不记前嫌! watch you mouth.注意言辞。 any urgent thing?有急事吗? how about eating out?外面吃饭怎样? don't over do it.别太过分了。 can you dig it?你搞明白了吗? i'm afraid i can't.我恐怕不能。 you want a bet?你想打赌吗? what if i go for you?我替你去怎么样? who wants?谁稀罕?