1.Make a mountain out of a molehill.

英文里mole指的是鼴鼠，molehill是鼴鼠在地下挖洞時堆出來的泥土，看著像小山一樣，常用來比喻“瑣事，不重要的事”。短語make a mountain out of a molehill說的就是“小題大做”的意思。

eg: Come on,don't make a mountain out of a molehill.行了啊，別小題大做。

2. Serve as a guinea pig.

豚鼠guinea pig常常用來被做實驗，英文中如果說某個人做了guinea pig,也就是說他成了實驗對象。

eg: Students in fifty schools are to act as guinea pigs for these new teaching methods. 五十所學(xué)校試用了這些新式的教學(xué)方法。

3.A cat got one's tongue

英文中用舌頭被貓叼走了來形容“一言不發(fā)，不吭聲”，這個短語通?？梢杂迷谛『⒆由砩?。

eg: What's the matter? Cat got your tongue? 怎么了？為什么不吭聲？

4.Back the wrong horse

這個習(xí)語來源于賽馬文化，支持一匹失利的賽馬也就是下錯了賭注，壓錯了寶。

eg: The company has been losing money,and many investors are beginning to feel that they may have backed the wrong horse. 公司一直在賠錢，不少投資人開始意識到自己下錯了賭注。

5.Cast pearls before swine.

把珍珠放在豬的前面，豬并不會知道珍珠的珍貴。這個習(xí)語有點像中文里的“對牛彈琴”，表示浪費感情。

eg:To sing for them is to cast pearls before swine. 別給他們唱歌，簡直是對牛彈琴。