1.every dog has its day凡人也有得意时

2.dog days三伏天

3.let the cat out of the bag 泄密

4. black sheep害群之马

5.rain cats and dogs 倾盆大雨

6.when pigs fly不可能发生的事

7.eat like a horse吃的多

8.put the cart before the horse 本末倒置

9.sweating like a pig汗如雨下

10. teach fish to swim 班门弄斧

11.early bird 早起或早到的人

12.cat and dog life 争吵不休的生活

13.cold fish 态度冷淡的人

14.as cunning as a fox 如狐狸般狡猾

15.ants in one's pants 坐立不安

16.treat sb. like a dog不把某人当人看