1.Its all Greek to me .一窍不通2.Whats up ? 出什么事了？3.What if.假如.会怎么样4.What for 为什么？5.So what？那又怎么样6.First come , first served 捷足先登7.Just my luck 真倒霉8.Do you really mean it ? 此话当真？9.Dont be a wet blanket.别扫兴10.tighten your belt 节衣缩食e back safe and sound 安然无恙地归来12.Got it 明白13.Forget it 算了，别想14.Go for it 努力争取go for sth 去参加15.How come ?怎么会16.at your service 听你差遣17.People from all walks of life 来自各阶层的人18.make yourself at home 请随意19.help yourself to the fish
