日常生活口语中有一些常用表达，比如“活该”、“胡闹”，比如“放心”、“讨厌”、“免谈”等等，这些常用的表达应该怎么说呢？

  1. 活该！
  Serves you(him,her) right! = You deserve (he/she deserves) it.
  e.g. You failed the test? serves you right for not studying!
  You had it coming!
  e.g. a: I gained weight!
  b: Well, you had it coming, because you've been eating so much without exercising.
  2. 胡闹
  That’s monkey business!
  e.g. stop fooling around! That’s monkey business! 别再混日子了！你根本在胡闹嘛！
  注：本句也可把monkey当成动词说成“Stop monkeying around!”
  3．请便！
  Help yourself.
  Do as you please. (表示不需准许而可取东西，就是请客人自在点，不必太拘束。)
  4．哪有？
  What do you mean? Not at all!
  注：如果只说“what do you mean？”那是不带任何用意的问句，只是想问清楚对方的意思；但是它也可用于挑衅及威胁，代表不满对方表达的意见。若加上“not at all”，表示你在否认对方表达的意思。
  5．才怪！
  Yeah，right！
  As if！
  e.g. a: Today’s test was very easy.
  b: Yeah, right!  
  He thinks he can socialize with us! As if! 他自认可以跟我们交往！ 才怪！
  注：“Yeah，right”常用于讽刺性的回答。考试.大“As if”大多是10到17岁女孩的用语。
  6．加油！
  Go for it！
  e.g. Go for it! you can do it!
  注：这是鼓励他人的话，也就是“Give it a good try.”“Try your best.”。　
  7．够了！
  Enough！
  Stop it！
  注：也可以加强语气说“Enough is enough！”。要是对方正在fooling around（ 无所事事），你会骂他“Enough of this foolishness！”（混够了吧！）
  8．放心！
  I got your back.
  e.g. Don’t worry, man. I got your back.
  注：这句原本来自“I’m covering you from behind”（我在后面掩护你），是打仗时军人常说的一句话。但在现代的意思是我会照料一切，要对方不必担心，所以这句男人会常用，女人反而较少用。
  9．爱现！
  Showoff！
  e.g. He’s been doing that all day. what a showoff!
  注：showoff是名词，也可作动词，如：she likes to show off her toys. 或he is always showing off his strength.
  10．讨厌！
  so annoying！
  e.g. Stop that! You are so annoying! 够了！你真讨厌！
  11．免谈！
  No need to discuss！（no need for discussion.）
  e.g. It’s all settled. There’s no need to discuss it anymore. 全都确定了。所以就免谈了！
  12．真棒！
  That’s great!
  13．好险！
  That was close！
  e.g. I’m so glad you made it. That was close!
  注：这里的close是很接近、幸好的意思，和开门关门（open and close）的close不同 。
  14．闭嘴！
  shut up！
  15．好烂！
  It sucks！
  e.g. That sucks. Don’t buy it.
  注：这句话可用来形容人、事物的状况令人失望或十分不理想。
  16．真巧！
  What a coincidence！