写一篇英语作文介绍我的家庭【实用20篇】

There are four people in my family. They are my father, my mother, my sister and I. My father is tall and thin.He likes to watch TV and movies and read books. My mother works in an office. She cooks very well. She is short and thin. My sister is a student. She is very clever. I am a student, too.I study hard. I like to play football and listen to music very much. I love my family a lot.

导语：袁隆平热爱祖国、一心为民、造福人类的崇高品德，与中国共产党肝胆相照、同心同德的思想风范，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Yuan Longping (born September 7,1930) is a Chinese agricultural scientist and educator,known for developing the first hybrid rice varieties in the 1970s.His "hybrid rice" has since been grown in dozens of countries in Africa,America,and Asia —providing a robust food source in high famine risk areas.

Mr.Yuan won the State Preeminent Science and Technology Award of China in 2000,the Wolf Prize in agriculture

and the World Food Prize in 2004.He is currently is DirectorGeneral of the China National Hybrid Rice R&D Center andhas been appointed as Professor at Hunan Agricultural University,Changsha.He is a member of the Chinese Acade my of Engineering,foreign associate of the US National Academy of Sciences (2006) and the 2006 CPPCC.

Mr.Yuan was born in Beijing,China.He loves playing Majong and the Erhu (Chinese violin),swimming and motorcycling.

【参考译文】

袁隆平(生于九月71930)是中国农业科学家和教育家，被称为在上世纪70年代开发第一个杂交水稻品种。他的“杂交水稻”已经在国家在非洲、美国和亚洲数十家长大，在大饥荒危险地区提供了稳定的食物来源。

袁先生获得国家最高科学技术奖的2000的中国，沃尔夫奖

2004、世界粮食奖。他目前是中国国家杂交水稻研发中心总干事并被任命为湖南农业大学的教授，他是中国科学院我的工程的一员，美国美国国家科学院外籍院士(2006)和2006届全国政协委员。

袁先生出生在北京，中国喜欢玩麻将和二胡(中国小提琴)、游泳和骑摩托车。

I have a big family, there are seven people in my family, my mon, dad, two grandpas, two grandmas and me. My dad is soldier, he works in police station. My mom works in the bank, she is an accountant. They both are very busy in working, I can only play with them in the weekend. My grandpas and grandmas dont work for company, but they are volunteers and often take me to do the voluntary labor.

I am in Grade three in Yuanling elementary school, my mom always tells me I am a good girl and should study hard and get along well with all my classmates.

In the weekend or holiday, my family often go out for travelling or other things, I feel very happy with all the members and love them very much.

人人都有一个幸福的家庭，而我也不例外，让我来介绍一下我的家人吧!

爸爸是一个知识渊博的人，但是很霸道，掌管家中的经济大权，大权在手当然人也霸道，有一个星期天，妈妈正在看电视，爸爸抢过来遥控器说：“看新闻”妈妈说：“凭什么你说风是风，说雨是雨，我偏要看电视剧”正在他俩争吵的时，我把遥控器拿走，调到动画片，可爸爸还是把遥控器拿走了，你说我爸霸道不霸道。

再说说妈妈吧!妈妈是个爱看书的人，也是个对我温柔体贴的妈妈，每天都给我做好吃的饭菜，有一次我生病了，发了高烧，为了照顾好我，一晚都没睡，直到我的烧退了她才休息。

我喜欢运动足球，篮球，乒乓球我都会，我还是足球队的队员呢?

这就是我的家庭。

I have a big family。 There are five people in my family， my grandmother， my parents and my elderly brother。 My grandmother is easygoing。 She has many friends near my home。 Every morning and night， she walks around with her friends。 My parents are doctors in the same hospital。 They are always busy with their work。 My brother is three years older than me。 He is a middle school student。 My family is happy。 Although my parents are busy， they care much about me。 We live a good life。

我有一个大家庭，总共有五口人，奶奶，爸爸妈妈，哥哥和我。我的奶奶很随和，邻里有很多朋友。每天早晚她都和她的朋友去散步。我的父母在同一家医院当医生，他们总是忙于工作。我的哥哥比我大三岁，是个初中生。我的家庭很幸福。尽管我的父母很忙，但是他们很关心我。我们的生活很美好。

I like to see movie so much. When I have time, the first thing I’d like to do is to find the hot movies and then buy some snacks, enjoying my movie hour. After appreciating so many movies, The Lord of the Rings impresses me the most. This movie has three series and I like them all. Though the moive was made in about 2000, its technology is still not out of date. In the movie, the scenery is such beautiful that I can’t move my eyes away. It was shot in New Zealand and I have made up my mind that I must go there someday and have a look at the beautiful scenery. The movie shows me a scientific world with all kinds of creatures. The wizards, the hobbies, the elves, the orcs and so on. It broadens my vision.

每个人都有自己崇拜的人，这个人就是我们的偶像。下面是小编为您带来的是介绍偶像英语作文相关内容，希望对您有所帮助。

Everyone has their own most admired, maybe he is a musician, perhaps a military family may be rare gifts and bold strategy, a person close to you...... The person I admire most is a strategist in the Eastern Han Dynasty - Zhu Geliang.

Zhu Geliang is clever and resourceful and always answers calmly whenever danger comes.

I remember once, Liu Bei in the fight against the Wei army, sent Zhu Geliang, Wei Yan led the 300 thousand army stationed in yangping. One day, Wei Yan led the 250 thousand army to fight against Cao Cao, leaving only a million people in the second. Just 250 thousand people led by Jima Ya against the Malay Hinata, Wei Yan and Sima Yi staggered road. When Zhu Geliang knew that Sima Yi was coming, he sent the frightened soldiers back to the gate and opened the gate. Only a few old men were cleaning in the street. Sima Yi knew that Zhu Geliang is very calm, he suspected an ambush, he goes away.

It can be seen from Zhu Geliangs, I must learn him properly!

人人都有自己最钦佩的人，他也许是一位音乐家，也许是一位雄才大略的军事家，也许是你身边的一个人……而我最钦佩的人是东汉时期一个军事家——诸葛亮。

诸葛亮机智聪明，每当危险来临时，总会沉着的应对。

记得有一次，刘备在对抗魏国大军时，派诸葛亮、魏延带领30万大军驻守阳平。一天，魏延率领25万大军去攻打曹操，只留万人在阳平。正好司马懿也率领25万人马来攻打阳平，魏延与司马懿错开道路。诸葛亮知道司马懿要来了，就让惊慌的士兵回到城楼上，打开城门，只让几个老头在街上打扫。司马懿知道诸葛亮十分沉着冷静，便怀疑有伏兵，就带兵走了。

从这件事就可以看出诸葛亮的神机妙算，我以后一定要好好地学习他啊！

[介绍偶像英语作文

1. I have been for over five years in teh employ of an exporting company.

本人曾经前后五年被受雇于出口贸易公司。

2. I have been in the business for the last ten years, and worked as the superintendent in the personnel department.

本人在过去十年在商界担任人事部主任迄今。

3. I have had five years’ experience with a company as a salesman.

本人曾在某一公司担任推销员，前后有五年之久。

4. For the past three years, I have been in the office of the Brothers Trading Co., where I have been ad still am an accountant.

本人曾经在兄弟贸易公司服务三年，担任会计工作，现仍在职中。

5. I am twenty years of age, and have been employed for the last two years by the Green Trees Co., in teh general clerical work of the office.

我今年20岁，曾于绿林公司服务两年，担任一般文员工作。

6. I am 25 years of age, and have had two years’ experience in my present post, which I am leaving to better myself.

我今年25岁，已在目前的职位工作两年，兹为寻找更上一层楼，准备离开此职位。

7. I am nineteen years of age, female and have had two years’ experience in a company’s delivery office.

我今年19岁，女性。曾在某家公司担任收发工作两年。

8. I am just leaving school, and am eighteen years of age.

本人18岁，不久即可毕业。

9. I am twenty years of age, and am anxious to settle down to office work.

本人20岁，希望能找到一个公司，以便安定下来。

10. Since my graduation from the school two years ago, I have been employed in teh Green Hotel as a cashier.

两年前，自从离校后，在格兰酒店担任出纳员。

Host Family Application Dear Host Family: Thank you to take some time off to read this letter. Wang Yan is my name, I’m a student from Liaoning University of Technology. I will head to your beautiful country and start my professional career which will last for a week. I sincerely hope that you can offer me a chance to be a part of your life, to be your student, friend and a member of your family. As a foreigner, I really need you as my teacher. The most important goal of my trip is learning - learning of advanced technology, learning Japanese culture and history, learning communicating with Japanese in Japanese, learning surviving in another country, a totally strange place for me. Indeed, this week will affect me so much that it will establish a firm foundation for my future work and study. To achieve this object, I can’t leave the help from you. You will be the best teacher I ever have.

I wish to make friends with all the members in your family. I will join in your life smoothly and quickly, although I know that may cause some discommodities at beginning. I want to bring Chinese style friendliness and passion to your home and try to establish a culture exchange environment. While learning from you, you may acquaint some knowledge of Chinese culture, society and history from me either. I believe we will get to know each other and become good friends ultimately.

I will do whatever I can to fit in your family as soon as possible. Considering your feeling, respecting your own custom, helping the house works I capable in, managing my own life and getting along well with all the family members, I will try my best to be a qualified member and not bother you. The last things I want to do are disturbing your original life and causing chaos in your house.

In the end, I cordially wish that you can admit me as a part of your family, to bring brand-new changes to my life and yours. You will be a witness of my growing, and I will make the best efforts to let this week be a wonderful memory of yours too.

Yours sincerely

Wang Yan

[英语作文：给寄宿家庭的信

Last year my father lost his job.At that time my parents felt a bit sad.I encouraged my father and said I was old enough and could do something to help.In order to help my parents,I took a part time job on weekends in the KFC near my home.

Luckily,it didnt take long time for my father to find a new job in a company.With the money I earned through working I bought a pair of new shoes for my father to celebrate the good news.My parents were deeply moved.

I said,"We are a happy family whether we are rich or poor.

I have a happy family.Though there is only a little furniture in my home and everything in the rooms seems rather disorderly,I love my home very much.

My father is an engineer,nearly fifty years old.As a Party member,quite often he works late into the night.He even forgets himself when he is reading.Once when having supper,I found that the soup tasted watery.It soon became clear that my father,deep in his reading,had forgotten to put salt in the soup.

I have a kind mother.She is a primary school teacher.She loves her pupils and her job very much and puts all her heart into her work.All our clothes are made by tailors,for she is too busy to sew for us.As a housewife,she has to do almost all the housework.So she is the busiest one in our family.

We all keep a lot of books and we love reading.During our leisure time,reading is our main hobby.Evening is the happiest hour in our family.We usually sit in my parents room,reading and discussing everything were interested in.

I love my family.It not only gives me much happiness and warmth but also teaches me how to be a real man.

介 What impresses me most in Beijing is the Great Wall which is one of the greatest projects in the world. Its not only the cultural heritage, but also a symbol of China. "Its glorious." I think. It looks like a big dragon running across the mountainous area. It starts Shanhaiguan in the east to Jiayuguan in the west. Its so long that nobody can walk from the beginning to the end.

在北京给我印象最深的是长城，是世界上最大的项目之一。它不仅是文化遗产，也是中国的象征。”我觉得“它很辉煌"。它就像一条巨龙穿越山区。从东面的山海关开始一直延伸到西边的嘉峪关。太长了以至于没有人能从走到尾。

It was firstly built in Qin Dynasty and prolonged in Ming and Qing dynasties. It was used to protect the enemies from invading in the past, but now it has become the place of interest which attracts so many tourists both at home and abroad.

它始建于秦朝，一直延期到明清时期。在过去它是用来防止敌人的入侵，但现在它已成为名胜古迹，吸引了很多国内外游客。

When I was standing on the top of the Great Wall, I felt as if I were in ancient days. I could see many laborers working very hard. How could they finish this extremely difficult task by hand?

当我站在长城上时，我感觉我像是在古代一样。我可以看到很多劳动者努力工作。他们怎么能用手工完成这个艰巨的任务?

He often do Beckham hairstyle, feet wear large shoes, love to play golf, who is he? He is my father. I tell you my fathers story!

National Day holiday, Dad took our family to do a very meaningful trip, the first stop, my father chose Shanxi Wutai Mountain, dad talked about an important allusion, Wutai Mountain is a Buddhist mountain, for the Manjusris temple, Manjusri Is the students of the first payment of God, in particular, Manjusri is the father and my patron saint, each of us will have a patron saint. Wutai Mountain in the road on both sides of the beautiful and beautiful autumn, full of mountains and plains are covered with golden white poplar, really beautiful, our family also a shadow it!

The second station went to the Great Wall of Beijing, wow! Here is like a dragon, many people are climbing the Great Wall, my father and I have climbed to a beacon, the father said: "The Great Wall is the emperor Built to prevent the Huns attack, the project with millions of migrant workers, spent decades to build. "This project is really great! See in the outer space see.

The third station, we went to Tianjin, visited the aircraft carrier, this aircraft carrier is Chinas former Soviet Union to buy the retired warships, people visit, really happy, our country has its own aircraft carrier, and can surround our great motherland, No longer be oppressed by the powers. We went to Tianjin famous antique snack street, my father he bought me a sugar with a dragon.

It was time for us to go home for a happy six-day trip. Ah, but I feel good to pack up a happy mood, ready to go to school slightly.

Teachers Day, September 10th, is a national teachers festival in China. It is celebrated since 1985. It expresses respects to the labors and contributions of teachers to the Chinese society. The goal of Teachers Day is to form a social climate in which teachers are respected and knowledge is valued. The date of Teachers Day is set at the beginning of the school year in order to arouse teachers and students enthusiasm for their work, and give a good start to teaching and learning. On teachers Day, students usually send greeting cards with good wishes to their teachers to show their respect. In Taiwan Province, Teachers Day is celebrated on September 28 annually. Choosing this day is to celebrate the birth of Confucius for his great contribution to Chinese culture. In some other countries, Teachers Day is also celebrated. In the United States, this is on the first Tuesday in May. In India, Teachers Day is celebrated on September 5. In Vietnam, it is celebrated on November 20.

Good afternoon everyone, my name is XXX, I’m 29 years old, and I’m from Beijing.

I’d like to introduce myself through the next points:

About working: There are three main aspects of my daily work:

The first, I teach courses such as basic laws and politics. I can feel the strong responsibilities on a teacher, because I have to not only teach knowledge well, but also let students know how to be a good person.

The second, I’m responsible for some administrative work, such as students recruiting and employment. The main majors in our college are urban metro, car repairing, transportation management, logistics and so on.

I think the students recruiting and employment are very important to our college as well as to students and their parents, the serious working attitude and consciousness are highly required.

The third part of my daily work is to be a head teacher, there is an idea I respect very much: there is no bad students, but only bad teachers. If a family is a component of our society, then the class is a component of the school.

When we judge a class good or bad, the key ruler is the organization and management ability of a head teacher, as well as the good working attitude and teaching methods. A head teacher is the pathfinder on the way of students growing, as a young teacher, I’ll try my best to be an excellent head teacher.

About daily life: I have a wide range of hobbies, especially sports and reading.

Sport: We have very good sports facilities in our college, I play badminton every Tuesday, and play basketball every Friday. I think that sports is the best flavor of our life, it can release the pressure and relax our mood.

Reading: I have good reading habits since I was a child, I like the famous four classic very much, and I’m also interested in some biography and news commentaries. I think books can help people being mature, they affect me gradually.

And of course, I have the confused moment, but I think the difficulties can help me grow. Thank you.

Hello everyone, my name is ya-nan zhang. I this year twelve years old, my hobby is reading, listening to music, play badminton, because of reading, I fell in love with one of the worlds top ten literary giant of lu xun, he is also my favorite celebrity. My motto is: "as long as it is not over, will go all out!" Therefore, until now, I do things more persistent.

I am optimistic, cheerful, lively, good, but also become a short temper sometimes, unable to control his temper.

Tell me about my name below, dad called me "ya nan" but there is a small story! Was grandpas grandmother has a good name for me, waiting for the registered permanent residence, can be in that day, dad didnt say the name "hong-yu zhang", because he thought the name like the name of the boy, but I was a girl! But also cant think of any good name at the moment, I heard that, on account of the moment, my father think of the word "nan", so he called the "nan" this two word, later also is my grandpa had a fierce! The meaning of the father is a filial son, few are grandma and grandpa, but this time, but for me this little life, and made a for grandma and grandpa.

But, moreover, fill in hu kou book, dont let take the name of two words, that what should I take? A "elegant" word suddenly appeared in front of dads, so he will blurt out, will be "ya-nan zhang"! I have my own name.

"Elegant" is elegant, noble, beautiful and generous, "nan" is solid, precious materials, dad this name is hope I quiet, elegant, and hopefully I can be in the plastic, but I failed to live up to my dads a after all expectations. Now I mischievous active, students are often around me the whole cup. I have to work hard, ah, to shorten my with elegant far distance.

And the word "nan" but dont know whether I deserve to go up, after all, do you have any talent, also need time to adjust to see!

I will maintain good mentality and friends, classmates, positive and uplifting, helping each other, respect each other, let you deeply remember me!

[商务英语礼仪自我介绍

Hello, my name is Kong Shiqi. I’m 12 years old. I like spring best. Because It’s always windy and warm. I wear my new T-shirt. I like to go hiking and fly kites. The sky is very blue. The M要My Saturdayleaves are very small and green.

Today is Saturday, the weather is very cool and windy. I wear my T-shirt. I get up at 8:00 in the morning. I eat breakfast at 8:30. At 10 o’clock, I nill go to Xinhua bookstore. It’s near the hospital. How can I get to Xinhua bookstore?

1、 Start from my home, it’s near the Chengshi plaza(广场).

2、 Take the No.11 bus.

3、 Get off at the cinema.

4、 Turn right at the traffic light. There are three lights: red, yellow and green. Red means“Stop”. Yellow means“Wait”.Green means“Go”. In China, drivers drive on the right side of the road. We must remember the traffic rules.

5、 Walk east for five minutes.

6、 Find the white building on the left.

The Xinhua bookstore is opposit to the white building.

The road is too long.

Hello, everyone. My name is Kelly. I am friendly and honest.I am good at English and maths. I like surfing the internet,playing computer games, watching TV and traveling. I also like playing table tennis and I am good at it ,too. I often play table tennis with my friends on weekends. And I want to be a famous table tennis player when I grow up. What I like most is to see the seagulls flying freely in the sky so I often go to the sea in summer. My favourite colour is white because I think white is symbolize purity.

大家好 我的名字叫KELLY .我很友好、诚实.我擅长英语和数学. 我爱上网、玩电脑网络游戏、看电视 和旅游.我也喜欢打乒乓球.我经常和朋友们在周末打乒乓球,长大了我想当一个乒乓球运动员.最喜欢在海边看着海鸥自由自在的飞翔,因此在夏天我经常去海边.白色是我的最爱.因为我觉得白色是纯洁的象征.

My name is——. There are 4 people in my family. My father is a Chemistryteacher. He teaches chemistry in senior high school. My mother is an English teacher. She teaches English in the university. I have a younger brother, he is a junior high school student and is preparing for the entrance exam.

I like to read English story books in my free time. Sometimes I surf the Internet and download the E- books to read. Reading E- books is fun. In addition, it also enlarges my vocabulary words because of the advanced technology and the vivid animations.

I hope to study both English and computer technology because I am interested in both of the subjects. Maybe one day I could combine both of them and apply to my research in the future.

april fools day is traditionally a day to play practical jokes on others, send people on fools errands, and fool the unsuspecting. no one knows how this holiday began but it was thought to have originated in france.

传统上来讲，愚人节这一天，人们可以相互搞恶作剧，骗人跑腿，欺骗不知情的人。没人知道这个节日是怎么来的，但人们普遍认为它源自法国。

the closest point in time that can be identified as the beginning of this tradition was in 1582, in france. new years was celebrated on march 25 and celebrations lasted until april 1st. when new years day as changed from march 25 to january 1st in the mid-1560s by king charles ix, there were some people who still celebrated it on april 1st and those people were called april fools.

庆祝愚人节最早是在1582年，在法国。那时，当时法国新年是在3月25日，一直持续到4月1日。16世纪60年代中期，国王查理九世把新年从3月25日变为1月1日，而还有一些人在4月1日过新年，这些人就被称作四月傻瓜了。

pranks performed on april fools day range from the simple, (such as saying, "your shoes untied!), to the elaborate. setting a roommates alarm clock back an hour is a common gag. the news media even gets involved. for instance, a british short film once shown on april fools day was a fairly detailed documentary about "spaghetti farmers" and how they harvest their crop from the spaghetti trees. whatever the prank, the trickster usually ends it by yelling to his victim, "april fool!"

愚人节那天的恶作剧有的很简单(比如，说句“你鞋带开了!”)，有的却是精心设计的。把室友的闹钟往后调一小时是常见的。甚至新闻媒体都来凑热闹。比如，在愚人节那天，曾经有一部英国短片较为详细地记录了“种意大利面的农民”，以及他们如何从意大利面树上收获意大利面。不管是什么恶作剧，搞恶作剧的人通常在最后会对被搞的人喊一句:"四月傻瓜!"

april fools day is a "for-fun-only" observance. nobody is expected to buy gifts or to take their "significant other" out to eat in a fancy restaurant. nobody gets off work or school. its simply a fun little holiday, but a holiday on which one must remain forever vigilant, for he may be the next april fool!

愚人节是一个“仅为娱乐”的节日。谁也不用买礼物，也不用带着男/女朋友出去到一家豪华餐厅去吃饭。人们也不会放假。它仅仅是个搞笑的小节日，但是在这一天，每个人都要保持警醒，不然就要被人耍啦。

each country celebrates april fools differently. in france, the april fools is called "april fish" (poisson davril). the french fool their friends by taping a paper fish to their friends backs and when some discovers this trick, they yell "poisson davril!".

每个国家用不同的方式过愚人节。在法国，愚人节被称作“april fish”。法国人和他们的朋友是这样开玩笑的：把一张裁成鱼形的纸用胶带粘到朋友的后背上，当有人发现的时候，他们就会喊：“poisson davril!”.

in england, tricks can be played only in the morning. if a trick is played on you, you are a "noodle". in scotland, april fools day is 48 hours long and you are called an "april gowk", which is another name for a cuckoo bird. the second day in scotlands april fools is called taily day and is dedicated to pranks involving the buttocks. taily days gift to posterior posterity is the still-hilarious "kick me" sign.

在英国，只能在早上搞恶作剧。如果你被耍了，那你就是“面条”。在苏格兰，愚人节要持续2天，被耍的人被称为“四月布谷”。苏格兰第二天的愚人节叫做taily day，恶作剧主要在别人的屁股上做文章。

The Moon Festival or Mid -autumn Festival is one of the three major traditional festivals celebrated by Chinese people. Like harvest time in other countries, the Mid-autumn Festival actually began as a

thanksgiving celebration, honoring the Soil God and the Crop God. This is also a time for family reunions. Chinese people enjoy moon cakes during this feast just as they eat rice dumplings for the Dragon Boat Festival. It is quite appropriate to bring moon cakes with you in token of festival greetings when calling on people during this season.

The Mid-Autumn Day

August 15th in Chinese Lunar Calendar is the

Mid-Autumn Day. It is one of the most important traditional festivals in China.

On that day people usually go back home to have family reunion. Each family will have the members get together to have a big dinner. The most popular food is moon cakes. They are round and look like the moon.

The moon is the brightest this night. People ate the delicious food while they were enjoying a beautiful full moon in their yard. At this time, some old people would like to tell many past events and tell the children a story about the rabbit. The children really believed that there was a rabbit on the moon. They wanted to go to the moon and have a look one day.

What a great festival!

中秋节

农历八月十五日是中秋节，在中国它是最重要的传统节日之一。 在那一天，人们通常回家与家人团聚，一家人聚在一起饱餐一顿。最流行的食品是月饼，它们圆圆的就像月亮。

中秋节晚上的月亮特别地圆。人们都在自家的院子里一边赏月一边吃着可口的月饼。这个时候；一些老人会讲述许多古老的故事，如月亮上的玉兔，孩子们信以为真，他们真想有一天登上月球看个究竟。 中秋是个美好的节日啊 !

[难忘的中秋英语作文

i am xx . i was born in . i graduate from senior high school and major in english. i started learning english since i was 12 years old. my parents have a lot of american friends. that’s why i have no problem communicating with americans or others by speaking english.

in my spare time, i like to do anything relating to english such as listening to english songs, watching english movies or tv programs, or even attending the activities held by some english clubs or institutes. i used to go abroad for a short- term english study. during that time, i learned a lot of daily life english and saw a lot of different things.

i think language is very interesting. i could express one substance by using different sounds. so i wish i could study and read more english literatures and enlarge my knowledge.

[酒店面试英语的自我介绍