俚语就是美国人或英国人生活里常用的语言，是学校里不教的“非正式”语言。
其实中文里也有很多俚语如：哇塞、当了、不靠谱、绝倒、纯爷们儿，这类的语言都是学校里不会教的，因为他们不够正式。
俚语可以让说话变得更“生动”更“流利”。俚语比喻一般比较“夸张”，所以很适合用来表达自己的心情和想法。
扩展资料：
美国人常用俚语
俚语一、
1、go up in smoke成为泡影 Peter’s vacation plans went up in smoke when a crisis arose in the office. 办公室出了问题，peter的假期泡汤了。
2、hit the road上路 We should probably hit the road. It’s going to take us two hours to get home. 我们可能该上路了吧？到家的两个小时呢！
3、shape up表现良好，乖 。You’d better shape up if you want to stay on. 如果你还想留下来的话最好乖一点儿。
4、scare the sh it out of someone吓死某人了 Don’t sneak up behind me like that. You scared the sh it out of me. 不要那样从后面突然吓我。你吓死我了。
5、pull strings运用关系 （源于“拉木偶的线”） He pulled some strings and managed to get us front row seats for the concert. 他运用关系替我们拿到音乐会前排的位子。
俚语二、
1、come again 再说一遍 Come again? I didn't quite understand what you said. 再说一遍好吗？你刚说的话我不明白。
2、come clean 全盘托出，招供 The criminal decided to come clean. 罪犯决定供出事实。
3、spring for 请客 Let me spring for dinner. 我来请客吃饭吧。
4、spill the beans 泄漏秘密 Don't spill the beans. It's supposed to be a secret. 别说漏了嘴，这是个秘密！
5、stick in the mud 保守的人 Cathy is such a stick in the mud. She never wants to try anything new. Cathy真保守，她从不想尝试新事物。
俚语三、
1、john厕所 I have to go to the john. Wait for me in the car. 我要去厕所。在车里等我一下。
2、keep in line管束 He needs to be kept in line. He's too wild. 他太野了，要好好管束一下。
3、jump the gun草率行事 Don't jump the gun. We have to be patient for a while. 不要草率行事。我们应该耐心等一会儿。
4、jump to conclusion妄下结论 Don't jump to conclusion. We have to figure it out first. 不要妄下结论，先把事情搞清楚。
5、lemon次 This car is a real lemon. It has broken down four times. 这辆车真次，已经坏了四次了！
美国人常用的俚语是指美国人生活中的常用语言，即“非正式”语言。俚语可以让表述变得更生动更流利。
俚语可以让说话变得更“生动”更“流利”。俚语比喻一般比较“夸张”，所以很适合用来表达自己的心情和想法。就像中文里的“哇塞”、“不靠谱”等，这类的语言都是学校里不会教的，因为他们不够正式。在看美剧，看电影过程中，经常会遇到一些只看得懂字面意思，却无法的词组或句子，这些往往是“俚语”。
常见美国英语俚语
1、In The Nick Of Time
Meaning：At the last moment, just before something bad happens
意思：在最后一刻，来得正是时候。
2、Take a Hike
Meaning：used for rudely telling someone to go away
意思是：哪儿凉快哪儿歇着去吧。
3、Jack Of All Trades
Meaning：a person who knows a little about a lot of different subjects or activities, but not a lot about any one of them
意思：杂而不精的人，万事通。
4、Break a Leg
Meaning：used for wishing sb. good luck
意思是：＜非正式＞祝你好运。
本回答被网友采纳俚语是学校里不教的“非正式”语言。
俚语可以让说话变得更“生动”更“流利”。俚语比喻一般比较“夸张”，所以很适合用来表达自己的心情和想法。
俚语因为比较夸张，可以让你的语言变得更“生动”、“流利”。
常见美国俚语
美国口语俚语（1）
1.clock in 打卡 Don't forget to clock in,otherwise you won't get paid. 别忘了打卡，否则领不到钱。
2.come on to 对...轻薄；吃豆腐 Tanya slapped Bill after he came on to her. Tanya在Bill对她轻薄之后打了他一巴掌。
3.come easily 易如反掌 Languages come easily to some people. 语言学习对有些人来说易如反掌。
4.don't have a cow别大惊小怪 Don't have a cow! I'll pay for the damages. 别大惊小怪的！我会赔偿损失的。 5.push around 欺骗 Don't try to push me around! 别想耍我！
美国口语俚语（2）
keep one's shirt on保持冷静 Keep your shirt on. He didn't mean to offend you. That's just the way he talks. 保持冷静。那只是他说话的惯常方式，他并非有意要冒犯你。
2.cool it冷静一点 Cool it. You are making me mad. 冷静一点。你快把我逼疯了。
3.joy ride兜风 Let's go for a joy ride. 让我们去兜兜风。
4.rap说唱乐 Do you like rap music? I have trouble understanding the words. 你喜欢说唱音乐吗？我听不太懂其中的歌词。
5.red-letter day大日子 This is a red-letter day for Susan. She made her first sale to a very important client. 今天是susan的大日子。她和一个非常重要的客户做成了第一笔生意。
美国口语俚语（3）
go up in smoke成为泡影 Peter’s vacation plans went up in smoke when a crisis arose in the office. 办公室出了问题，peter的假期泡汤了。
2.hit the road上路 We should probably hit the road. It’s going to take us two hours to get home. 我们可能该上路了吧？到家的两个小时呢！
3.shape up表现良好，乖 You’d better shape up if you want to stay on. 如果你还想留下来的话最好乖一点儿。 4.scare the sh it out of someone吓死某人了 Don’t sneak up behind me like that. You scared the sh it out of me. 不要那样从后面突然吓我。你吓死我了。
5.pull strings运用关系 （源于“拉木偶的线”） He pulled some strings and managed to get us front row seats for the concert. 他运用关系替我们拿到音乐会前排的位子。
美国口语俚语（4）
come again 再说一遍 Come again? I didn't quite understand what you said. 再说一遍好吗？你刚说的话我不明白。
2.come clean 全盘托出，招供 The criminal decided to come clean. 罪犯决定供出事实。
3.spring for 请客 Let me spring for dinner. 我来请客吃饭吧。
4.spill the beans 泄漏秘密 Don't spill the beans. It's supposed to be a secret. 别说漏了嘴，这可是个秘密哦！ 5.stick in the mud 保守的人 Cathy is such a stick in the mud. She never wants to try anything new. Cathy真保守，她从不想尝试新事物。
美国口语俚语（5）
john厕所 I have to go to the john. Wait for me in the car. 我要去厕所。在车里等我一下。
2.keep in line管束 He needs to be kept in line. He's too wild. 他太野了，要好好管束一下。
3.jump the gun草率行事 Don't jump the gun. We have to be patient for a while. 不要草率行事。我们应该耐心等一会儿。
4.jump to conclusion妄下结论 Don't jump to conclusion. We have to figure it out first. 不要妄下结论，先把事情搞清楚。
5.lemon次 This car is a real lemon. It has broken down four times. 这辆车真次，已经坏了四次了！
美国口语俚语（6）
fishy 可疑的 His story sounds fishy. We should see if it's really true. 他的故事听起来可疑。我们应该看看到底是不是真的。
2.flip out 乐死了 Chris flipped out when I told him that we won the game. 我告诉克里斯我们赢了比赛时，他乐歪了。
3.fix someone up 撮合某人 I think Xixi and Macaulay would make a perfect couple. Let's fix them up.
4.take a shine to 有好感 He really likes you. There are very few people he takes a shine to right away. 他真的喜欢你。他很少对人一见面就有好感的。
5.third wheel 累赘，电灯泡 You two go on ahead. I don't want to be a third wheel. 你们两个去好了，我不想当电灯泡。
美国口语俚语（7）
ripoff 骗人的东西 What a ripoff! The new car I bought doesn't work! 真是个骗人货！我买的新车启动
2.rock the boat 找麻烦 Don't rock the boat! Things are fine just the way they are. 别找麻烦了，事情这样就够好了。
3.blow it 搞砸了，弄坏了 I blew it on that last exam. 我上次考试靠砸了。
4.in hot water 有麻烦 He is in hot water with his girlfriend recently. 近段时间他跟女友的关系有点僵。
5.put one's foot in one's mouth 祸从口出 Wally is always saying such stupid thing. He has a real talent for putting his foot in his mouth. 沃力尽说这种蠢话。他真有惹是生非的本事。
美国口语俚语（8）
flop （表演、电影等）不卖座，失败 The movie was a flop. Nobody went to see it. 这部电影卖座率奇低，没有人去看。
2.drop in/by/over 随时造访 Feel free to drop in anytime. I'm usually home and I'd love the company. 欢迎随时来坐坐。我通常在家，也喜欢游人做伴。
3.drop a line 写信 Drop me a line! 给我写信！
4.duck 躲闪，突然低下头 Remind little Bobby to duck his head when he crawls under the table so he won't hit his head. 提醒小波比爬到桌下时要低头才不会受伤。
5.go with the flow 随从大家的意见 Sharon is an easy-going person. She just goes with the flow. 沙伦是个随和的人。人家怎么说，她就怎么做本回答被提问者采纳