Tips: 英语中表示颜色的词，常常有很多特殊的用法some special uses，而且要注意这些词汇的动词用法pay attention to the verbs.
1.Black sheep 害群之马
He is the black sheep of his family.
英语中的害群之马其实是一只羊，但是我们可以用dark horse黑马来形容比赛中出人意料的参赛者。
2.Black out 失去知觉
My legs gave way and I blacked out.
3.Blackout 停电
I hate suffering from a blackout when I have lots of work to do.
Blackout相当于power failure断电。
4.A black mark 污点
The incident left a black mark in his life.
5.Black money 黑钱
The government says when it comes to black money，it is not a open-and-shut case.
1.Give somebody the green light 批准
My boss gave me the green light to implement the new plan.
2.Be green with envy 嫉妒
She was green with envy when she saw her ex-boyfriend with another girl.
3.the green-eyed monster 爱嫉妒的人
He looks gentle and humble but the green-eyed monster.
4.Green hand
I am not a green hand anymore. Do not bully me！
Green hand有点类似于fresh fish菜鸟
1.Out of the blue 突如其来
I have not heared a word from him for 10 years，and one day he just showed up out of the blue.
2.Once in a blue moon 非常罕见
The liar told the truth instead of tell a lie once in a blue moon.
3.Blue in the face 脸色发青
You can try to persuade me until you are blue in the face，but I will not change my mind.你就算说得筋疲力竭我也不会改变主意。
4.Baby blue 产后忧郁
She is suffering from baby blue.
1.White lie 善意的谎言
A white lie is a kind lie and may be far more innocuous.
2.As white as a sheet 面色苍白
She was as white as a sheet when she heard the news.
3.White bread 白面包
What kind of bread，white or wheat？
4.White knuckle 历险
The roller coaster was so scary that I had to white knuckle the entire ride.
1.Paint the town red 玩得开心
We went out last night and painted the town red.
2.Be caught red-handed 被抓个现行
He was caught red-handed while cheating on the exam.
3.Run a red light 闯红灯
I got a ticket yesterday for running a red light.
4.Red tape 官僚羁绊
The mayor promised to eliminate red tape that hampers business development.
1.Yellow-belly 胆小鬼
Everybody knows he is a yellow-belly，so nobody likes him.
2.Yellow press 黄色报刊
The yellow press cannot be punished in our country.
3.Yellow dog 卑鄙小人
Do not be a yellow dog. It is too annoying.
对比记忆：kiss ass马屁精 bad ass小混蛋
