1.To teach a fish how to swim.班门弄斧
2.Love me ,love my dog.爱屋及乌
3.I'm so hungry,I could eat a horse.
我饿极了,能吃得下一匹马了
4.A lion in the way.强虎拦路
5.One swallow doesn't make a summer.
不可凭个别现象而断然下结论
6.A wolf in sheep's clothing .伪君子
7.You can't make a crab walk straight.螃蟹横行,秉性难移
8.The early bird catches the worm 早起的鸟先得虫;捷足先登
9.It rains cats and dogs.倾盆大雨
10.In like a lion ,out like a lamb
(March comes in like a lion and goes out like a lamb
三月天,来似雄狮,去似羔羊)