1. show one's true colors 露出了本来面目；原形毕露
eg:I believe that he will show his true colors someday.
我相信总有一天他会现出原形的。
2. show someone the door 将某人赶出来；让某人离开
eg:Dick was rude to my family and I simply showed him the door.
迪克对我家人无礼，所以我把他赶出去了。
3. show someone the ropes 传授秘诀；告诉某人工作的窍门
eg:The new secretary started today so I spent most of the morning showing her the ropes.
新来的秘书今天开始工作，所以我花了一上午时间来教她熟悉工作。
4. show the white feather 畏缩不前，显示胆怯或懦弱
这个说法来自斗鸡，如鸡的羽毛出现白色，显示饲养得不好。
eg:Don't show the white feather, fight for your beliefs.
不要害怕，要为你的信念而战。
5. show one's teeth 发怒
eg:If you cannot bite, never show your teeth.
不会咬人就别呲牙裂嘴。（没本事别逞强）