四级英语口语考试自我介绍范文汇总20篇

The Great Wall of China

The Great Wall of China is called the "Ten thousand Ii Great Wall" in Chinese. In fact, it s more than 6 000 kilometres long. It winds its way from west to east, across deserts, over mountains, through valleys till at last it reaches the sea. It is one of the wonders of the world.

The Great Wall has a history of over twenty centuries. The first part of it was built during the Spring and Autumn Period. During the Warring States Period, more walls were put up to defend the borders of the different kingdoms. It was during the Qin Dynasty that the kingdom of Qin united the dif ferent parts into one empire. To keep the enemy out of his empire, Emperor Qin Shi Huang had all the walls joined up. Thus, the Great Wall came into being.

The Great Wall is wide enough at the top for five horses or ten men to walk side by side. Along the wall are watchtowers, where soldiers used to keep watch. Fires were lit on the the towers as a warning when the enemy came.

It was very difficult to build such a wall in the ancient days without any modern machines. All the work was done by hand. Thousands of men died and were buried under the wall they built. The Great Wall was made not only of stone and earth, but of the flesh and blood of millions of men.

Today the Great Wall has become a place of interest not only to the Chinese but to people from all over the world. Many of them have come to know the famous Chinese saying: "He who does not reach the Great Wall is not a true man."

中国的长城

中国的万里长城被称为“万里长城”。事实上，它有6000多公里长。它蜿蜒地从西向东，穿过沙漠，越过高山，穿过山谷，直到最后到达大海。它是世界奇观之一。

长城有二十多个世纪的历史。它的第一部分是在春秋时期建造的。战国时期，有更多的城墙被用来保卫不同王国的边界。正是在秦朝，秦国把帝夫的发福部分统一为一个帝国。为了把敌人赶出他的帝国，秦始皇把所有的城墙连在一起。于是，长城诞生了。

长城的宽度足以让五匹马或十个人并排走。沿着墙的是瞭望塔，士兵们常常在那里守望。当敌人到来时，在塔上点燃了火作为警告。

在古代没有任何现代机器的情况下，很难建造这样一堵墙。所有的工作都是手工完成的。成千上万的人死了，被埋在他们建造的城墙下。长城不仅是由石头和泥土建成的，而且是几百万人的血肉所组成的。

今天，长城不仅对中国人，而且对来自世界各地的人都有兴趣。他们中的许多人都知道中国著名的谚语:“没有到达长城的人不是真正的人。”

Smelling, a little life has come into this world -- I. With the advent of the rose, my father and mother took a name for me, called Tang - Jing - Wei.

I have a dark black hair, a small pair of eyes and a small cherry mouth. (I dont know, you say it)

I am very active. There are a few sad things in the boundless. Although I cant see any beautiful women, I can see for a while. In class, my popularity is very high. Almost all of my classmates like to make friends with me.

I like singing very much, and the love of the song is not enough. When I sleep, song with its elegant melody with me into the sweet dreams; when I feel sad, song with its cheerful music, let me forget all the troubles; when I feel happy, with its festive rhythm will comfort me, as if you are in a happy paradise...... But, my future it does not accompany me, and depend on my own efforts to strive for. Every day I think one day, I stood on a big stage, the cheers of the audience, the band accompaniment sound, and behind me as I dance dancers. How brilliant and romantic the moment was! But compared to now, from the big stage is how far away, only a day alone lying in the window, quietly look up in the stars from the sky, or knocked down the rain, the mouth can not help but sing out: "opened the night of the skylight, said the desire to the meteor, give me wings, to close to the sun...... If I want to sing and sing, sing and sing loudly, even if there is no one to applaud for me, at least I can be able to enjoy myself bravely... " Yes, I did not applaud this life for me, but I still have the courage to enjoy myself. But the only thing that can listen to me now is that that does not speak. Please bring my wish to the meteor, and bring my heart to the meteor.

This is me, a love of music, once crazy about music, forget to learn, like me to make friends with me.

打开门，哦，房间很漂亮！这是谁的房间？这是我的房间。

床在窗的附近被子和一个洋娃娃在bed.What颜色是我的床这的;我最喜欢的颜色purple.It大局;多么梦幻的颜色梳妆台旁边的bed.There一些书和梳妆台上的一支笔。

我喜欢看电视。电视在床前。我是躺在床上看电视的。我有一架钢琴。钢琴靠近电视机。有时我弹钢琴。电脑靠近窗户。我经常弹钢琴。

这是我的房间，你喜欢我的房间吗？你的房间呢？

想要拥有一间属于自己的房间。墙的颜色是浅蓝色的。房间里有我喜欢的东西。我想在窗户附近放一张白色的大桌子。所以在我读书的时候，我可以看到飞鸟在天空中飞行。在桌子上，我要放些书。我最喜欢的照片也会放在桌子上。房间中间有一张大的软床。我会把可爱的熊放在当我累了的时候，我会和我的熊睡个甜蜜的睡眠。另一边有一张小桌子，上面有我的电脑。我喜欢用它来和我的好朋友们交流。当然，我会把我喜欢的照片放在墙上。在地板上，我的玩具都留在那里。当我有空时，我想和他们一起玩。

我有一个漂亮的房子。我家有很多书。我每天早上都可以在家里看书。当我踢足球后，我可以在家里休息一下。我也可以在家里玩电脑。我家里有玩具，篮球和各种故事书。我非常喜欢我的房子。欢迎来到我家。

My room

Open the door,oh,the room is very beautiful!Whose room is this?It’s my room.

The bed is near the window.a quilt and a doll is on the bed.What color is my bed?It’s my favourite color—purple.It’s very dreamily color.the dresser is next to the bed.There are some books and a pen on the dresser.

I like watching TV.The TV is before the bed.I an lie to watch TV on the bed.I have a piano.The piano is near the TV set.Sometimes,I play the piano.And the computer is near the window.I often play the piano.

This is my room.Do you like my room?What about your room?

want to have a room of my own.The colour of the wall is light blue.There are thing that I like in the room.I want a big white desk near the window.So while Im reading book,I can see the birds flying in the sky.On the desk Iwant to put some books.The photo of my ffaminily will be put on the desk too.In the middle of the room theres a big big soft bed.And I will put the lovely bear on the bed.When Im tired I will have a sweet sleep with my bear.On the other side there is a small desk.On it,theres my computer.I like to use it to conmunicate with my good friends.Certainly,I will put up the pictures that I like on the bule wall.On the floor my toys are staying there.When Im free I would like to play with them.

I have a nice house.There are many books in my house. I can read in my house every morning.I can have a rest in my house when I am tired after playing football.I can also play computer in my house.There are toys,basketball and all kinds of story books in my house. I like my house very much.welcome to my house.

Miss Wang is very tall and thin. She is about 1.7 meters  tall. She has long fair hair. She has big eyes and a small mouth. She looks very pretty.

Miss Wang is also a friendly teacher. She is kind to us and she gets on well with everyone. I like her very much. Miss Wangs favourite colour is pink and she likes pink things too. I think Miss Wang has many hobbies. She likes reading,running and playing tennis.

She thinks" Health is the first", so she likes doing sports. She won the first prize in the English speech competition last term.

[英语作文介绍老师

My name is xxx. I was born in (Dalian, Liaoning )xxx province in February 1994. I am average height, medium build.(我中等身高，不胖不瘦)I have long black hair and I wear a pear of glasses. I usually wear a red coat and a black trousers.Bcause my favourite colours are black and red .My father is a worker,and he works very hard .My mother is an Enlish teacher ,and she is kind to her students. I have a small room .There is a bed and a desk in it . The main subjects I studied at school included Chinese, maths, English, physics, chemistry and computer.I have many haobbis ,for example, I like English and computer best and I am very good at them. Last year I won a prize in the school computer competition. In my spare time I enjoy listening to popular music and collecting stamps. My favorite sports are swimming in summer and skating in winter. That is me ,a lovely girl.

I am from Xian,the capital city of Shanxi province,which is considered as one of the cradles of Chinese civilization. The more than 1100 years history of thirteen feudal dynasties,from the Zhou Dynasty to the Tang Dynasty,leaves the city abundant historical and cultural heritages.When yo step out of Xian railway station,the world-renowned city wall,built in Ming dynasty,will come your view.Walking around this city,you can feel its profound history everywhere.

Qingqiang opera is quite popular in this area which is characterized by its straightforwardness and enthusiasm,so the people here are no exception.If you are in trouble,we will always come to help you as soon as possible.Besides good nature,we are strict with our work,persistently pursuing high quality.For example,the famous director,Zhang Yimou, attaches high importance to every detail of his works,including the theme,the actors and the frame.As a result,his works enjoy wide popularity and reputation.Growing up in such a beneficial environment ,gradually,I develop a spirit of integrity,diligence and earnestness.

Last but not least,we are extremely hospitable and so welcome to Xian.

Some have been to the beautiful little xinganling, some have been to the rich xisha islands, and I have been to the ancient civilization capital, xi an.

When you come to xi an, you will see the world-famous walls. As I reached the foot of the wall, I looked up and saw that the Great Wall was like a warrior of a full-body armor, guarding the ancient city.

Xi an has a variety of delicacies. Walking back in the street, you can taste the delicious meat, bread in the soup, oil chili sauce... Guests can fill their mouths.

Xi an is also a tourist attraction. My favorite is the big wild goose pagoda music fountain plaza. On the night of the summer, when you come here, you will see countless springs of water, in the sound of music, in the light of the colors of the light, and dancing to the beat of the beat. Sometimes like flowers, sometimes like willow... I am barefoot and jump into the water, the pearl drops on my body, very cool!

I love the old xi an!

有人去过美丽的小兴安岭，有人去过富饶的西沙群岛，而我去过古老的文明之都——西安。

来到西安，就会看到举世闻名的古城墙。走到城墙脚下，我抬头仰望，只见高大的城墙像一位全身皮甲的威武战士，正在守护着这座古老的城市。

西安有各种各样的美食。走在回民街，你能够品尝到好吃的肉夹馍、羊肉泡馍、油泼辣子面……客人们可以大饱口福。

西安还是一个旅游胜地。我最爱去的是大雁塔音乐喷泉广场。夏日的夜晚，来到这里，你会看见无数的泉眼，在动听的音乐声中，在五光十色的灯光下，合着节拍偏偏起舞。有时像绽开的花儿，有时像垂下的杨柳……我光着脚丫，跳向水中，那珍珠般的水珠洒落在我的身上，甚是凉爽!

我爱古老的西安!

[英语作文介绍西安

大家好，我是***大（1）班的***，今年8岁了，爸爸妈妈给我起这个名字的意思是聪敏可以成材，我的爱好很广泛，我喜欢弹琴、做数学、拼音、纸工、画画、英语，我要学习的地方还有很多很多，快升入一年级了，我会好好学习，天天向上！我的理想是长大后：读北大，做将军！

这是儿子参加市里奥运宝宝选拔时说的一段话，说完后他表演了电子琴独奏《晚会》。学了不到一年时间，已经在练三级的曲子了，这其中除了他的勤学苦练外，还有他爸爸的付出，琴童的父母都是伟大的（至少其中一个肯定是伟大的，我家他是伟大的！呵呵）。在每个父母眼中，自己的孩子都是最优秀的，我家如是，我对他说，不管这次比赛成绩如何，至少我们比没参加的小朋友多了一些勇气，多了一次上台的经历，以后他上台不会再怯场。

导语：“当我登上了神舟五号飞船的第一次，我不禁感到兴奋，我决定，我要飞了。”下面是yuwenmi小编为备考的同学准备的优秀英语作文，欢迎阅读与借鉴，谢谢!

"When I boarded the Shenzhou-5 spacecraft for the first time, I couldnt help feeling excited, I decide that I must fly it."------said by Yang Liwei.

Colonel Yang Liwei is an astronaut, and he is also a member of the Astronaut Team of the Peoples Liberation Army.

Born on June 21st,1965 in a teathers family in Suizhong Country of Liaoning Province,Yang Liwei had a happy childhood with his parents.Not only was he a good student in school,but he also had a gift for math.He won a lot of math competition prizes.After graduating from middle school,Yang Liwei continued his studies at the No.8 Aviation College of the Air Force of the Peoples Liberation Army.He studied very hard and graduated with a Bachelors degree.Later,hebecame a fighter pilot.

Several years later,because of his excellent manifestaion,Yang Liwei was among 14 persons chosen from 1,500 pilots for astronaut training.Yang Liwei did very well and passed astronaut tests in 1996 and 1997.Then he became one of three astronauts for Chinas first manned space flight.After a series of hard trainings and tests,Yang Liweibecame Chinas first astronaut on Oct15,2003 at last.

Being the first Chinese to travel in space,Yang Liwei is a hero of our nation in our heart and mind.He devotes himself to Chinese space program.Whenever we review the moments which Yang Liwei was traveling in Shenzhou-5 in space,holding our national flag in hand, we will be proud of our country and think highly of Yang Liwei.I believe that China will make greater progress in space flight in the future.

【参考译文】

“当我登上了神舟五号飞船的第一次，我不禁感到兴奋，我决定，我要飞了。”------杨利伟说。

杨利伟上校是一名宇航员，也是人民解放军航天员小组的成员。

出生于绥中的国家辽宁省在一个教师家庭1965年6月21日，杨利伟有一个幸福的童年和父母。他不仅是个好学生，但他也有一个礼物给数学。他赢得了很多数学竞赛的奖品。中学毕业后，杨利伟继续他的研究，在对人民解放军空军航空大学8。他学习很努力，和学士学位毕业后，成为一名战斗机飞行员。

几年后，由于他出色的表现，杨利伟被选为宇航员训练飞行员从1500 14人中，杨利伟做的非常好，在1996和1997通过测试的宇航员。然后他成为了对中国的首次载人航天飞行的三名宇航员。一系列的艰苦训练和测试后，杨利伟成为中国的第一个宇航员。

作为第一个中国旅游的空间，杨利伟是我在我们心目中的民族英雄。他致力于中国的太空计划。每当我们回顾的时刻，杨利伟乘坐神舟五号在太空，手里拿着我们的国旗，我们会为我们的国家感到自豪，对杨利伟的评价很高。我相信中国会在太空飞行的未来更大的进步。

Im 13 years old and I live in the city of Zhaoqing. I study very well.I have a sister.Everyone loves us.But they often compare my brother with me.This makes me angry.I dont want to be like my brother. I only want to be myself.

I am active girl.I like sports very much.I am good at swimming.I also like riging a bike.Because my home is far from school,I ride to school everyday. Im kind-hearted.If you need help,please come to me.Ill try my best to give help to you.I hope we can be friend.

鲁迅曾经说过：“真的猛士，敢于直面惨淡的人生，敢于正视淋漓的鲜血。”下面是小编为你整理的有关鲁迅的英语作文，希望对你有帮助! 鲁迅的英语作文篇1

Lu Xun is my favourite writer. He is one of the most famous writers in China. He wrote a lot of literary works.

He was thin and not tall. He always wore a long old coat in that time. At first, he wanted to be a doctor and save people’s lives. So he learned medicine, but later he found the Chinese were in sensitive when they faced the oppression of their enemies. So he began to write articles to wake the people up.

Lu Xun wrote some famous novels, he attacked the social mores in that time, and in his works, many persons were known very well, such as “Ah Q”“Kong Yi ji”.

I like Lu Xun because I also want to be a great writer like him. I like reading and writing, and I often write some articles in my free time. Though I don’t have good literary talent or a large vocabulary, I spend lots of time reading and writing to improve my writing skills.

Lu Xun is my hero, I will learn more from him. I believe I can be a great writer like him in the future. 鲁迅的英语作文篇2

As it is known to us all ,LuXun is a famous Chinese writer. He is not only a writer, thinker, but also the founder of Chinese Literature . He wrote many classic (经典的)novels and his stories, which are translated many languages, were made into film,such as The True Story of AH Q and The New Years Sacrifice,which deeply showed peoples suffering in the old days.

Because of his achievement to Chinese literature, Chairman Mao spoke highly of him. Besides, some of his works were selected into the text books in high school and university. I think youll gain a lot from reading his works.

[介绍鲁迅英语作文3篇

Good afternoon, professors !I am great honored to meet you here.Now allow me to give a brief self-introduction.

My name is xx, xx years old, born in xx city, xx province. I have been working for nearly xx years. I am open-minded, quick in thought and very fond of history. In my spare time, I have broad interest like many other youngers.

In year xx, I entered xx, major in xx. After my graduation, I entered xx University to study my postgraduate course, major in xx. In those 7 years study, I worked hard, and I gained scholarship for many times.

During 3 years study in xx University, under the strict guidance of my tutor, I have learned systematically the theory of xx. I benefit from working together with excellent colleague. xx University shares many same characteristics with xxx University. Both of them have a refreshing, scholarly atmosphere.

After my graduation in xx, I worked in xx. I got a position in xx. However, with time going on, the more I experienced, the clearer I realized that I am really interested in xx. I am eager to learn more about xx and I hope I can study further. I wish to find a way to solve the complicated problem in my daily work.

So I started the way to pursuing my studies in xx, and work hard for about half year. Now all my hard word has got a result since I have a chance to be interview by you. If luckily I got the chance to learn xx, I will work harder than before. Thank you!

导语：山九华山是中国佛教的四个神圣的山脉之一。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!

Jiuhuashan(also called "Mount Jiuhua"， literally "Nine Glorious Mountains")

Mount Jiuhua is one of the four sacred mountains of Chinese Buddhism. It is located in Qingyang County in Anhui province and is famous for its rich landscape and ancient temples.

Many of the mountain’s shrines and temples are dedicated to Ksitigarbha (known in Chinese as Dìzàng， Traditional Chinese：)，

who is a bodhisattva and protector of souls in hell according to Mahayana Buddhist tradition. Pious Buddhists often come to this popular attraction in Anhui to climb to Greater Tiantai peak， which is regarded as Jiuhuashan’s most important peak， although it is not the tallest.

【参考译文】

(也称为“九华山山”字面上的“九光荣山”)

山九华山是中国佛教的四个神圣的山脉之一。它位于安徽省庆阳县并以其丰富的景观和古老的寺庙。

很多山的神殿、寺庙都致力于地藏(中国传统在中国被称为地藏)

菩萨保护灵魂的入地狱率根据大乘佛教的传统。虔诚的佛教徒经常来这个流行的吸引力在安徽爬到天台峰这被认为是九华山最重要的高峰虽然它不是最高的。

导语：扬州是中国剪纸流行最早的地区之一，早在唐代，扬州已有剪纸迎春的风俗。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!

When early spring festival, many local people like sticking each kind of paper-cut on windows .Not only the paper-cut window decoration has contrasted the jubilation festive atmosphere, moreover has also brought beautiful enjoyment for the people.

The paper-cut is one kind of extremely popular art. Because it mostly is pastes on the window, therefore people general name it “the paper-cut window decoration”. The paper-cut window decoration usually with the color red and it content rich, like the cultivation, the spinning and weaving, fishing, tend sheep, feed hogs, raise chickens and so on.

【参考译文】

春节的时候，许多当地人喜欢在窗户上贴各种剪纸，剪纸窗花不仅烘托了喜庆的喜庆气氛，而且给人们带来了美丽的享受。

剪纸是一种非常流行的艺术。因为它大多是贴在窗户上的，所以人们一般称之为“窗花”。剪纸窗花通常以红色和红色为主，内容丰富，如养殖、纺织、垂钓、放羊、喂猪、养鸡等。

Dad is like a pillar, support from a family; father like a mountain, to assume the due responsibility; father like a candle, illuminate my mind ... ... Dad is very concerned about me, but he is not every time But to express it from some manners.

My father is long and big eyes, a very straight nose, a mouth that can speak, formed a handsome face.

Dad is very responsible.

I remember one time, I have a few questions will not do, they went to the father to ask, my father let me read the subject, and then asked me there will not, the last one patiently explained to me until I will be. Another time, I did not test well, very afraid of my father called me, home on the road, I have been thinking about how and father explained, did not expect to go home, I told the results of the father, my father not only scold me, But also blame themselves. Since then, my father every day to give me a question, there are several times to eat time, I call my father to eat, my father said to help me out of the topic and then eat, until the title finished, my father to eat to eat, the food has been cool, and so on When I finished my dads title, my dad had a good meal, and he came to help me check and find the wrong title. He told me where it was wrong, what should I do, and then a few days later. Dad is always doing that. I can have such a responsible father very happy.

Dad is very concerned about my study. Every time at the dinner table, my father always asked me what happened in the school, how the situation, how the exam situation ... ... I can have a so concerned about my study of my father feel very happy.

I love my dad, because he is very responsible, very concerned about my study!

There are many arguments about the advantages and disadvantages of examinations. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them.

To me, I think an examination is a good thing for both teachers and students. Teachers can find out how much the students have grasped and then improve their teaching; students, on the other hand, will learn what their weak points are and then study even harder.

All in all, we should not waste time arguing whether examinations are good or not. What we should do is to try to improve the exam system and try to adjust it to our different requirements.

I am xx.  I was born in xx.  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 substanceby using different sounds.  So I wish I could study and read more English literatures and enlarge my knowledge.

Shantou is a coastal city in the east of Guangdong province with a total population of more than 5 million and an area of 2064 square kilometres.It became one of the original Special Economic Zones of China in the 1980s.It has many tourist attractionssuch as beautiful beaches and fresh air.It is one of the most comfortable ciites for people to live in in China.

Welcome to Shantou!

汕头是一个海滨城市广东省东部的总人口500万多万面积2064平方公里。它成为中国最早的经济特区之一在1980年代。它有许多旅游景点如美丽的海滩和新鲜的空气。它是一种最舒适ciites人们住在在中国。

欢迎来到汕头!

good morning, my name XX, it is really a great honor to have this opportunity for a interview, i would like to answer whatever you may raise, and i hope i can make a good performance today, eventually enroll in this prestigious university in september. now i will introduce myself briefly,i am XX years old,born in XX province ,and i am curruently a senior student at beijing XX university.my major isXX.and i will receive my bachelor degree after my graduation in june.in the past 4 years,i spend most of my time on study,i have passed CET4/6 with a ease. and i have acquired basic knowledge of packaging and publishing both in theory and in practice.

Besides, i have attend several packaging exhibition hold in Beijing, this is our advantage study here, i have taken a tour to some big factory and company. through these i have a deeply understanding of domestic packaging industry. compared to developed countries such as us, unfortunately, although we have made extraordinary progress since 1978,our packaging industry are still underdeveloped, mess, unstable, the situation of employees in this field are awkard. but i have full confidence in a bright future if only our economy can keep the growth pace still. i guess you maybe interested in the reason itch to law, and what is my plan during graduate study life, i would like to tell you that pursue law is one of my lifelong goal,i like my major packaging and i wont give up,if i can pursue my master degree here i will combine law with my former education. i will work hard in thesefields ,patent ,trademark, copyright, on the base of my years study in department of p&p, my character? i cannot describe it well, but i know i am optimistic and confident. sometimes i prefer to stay alone, reading, listening to music, but i am not lonely, i like to chat with my classmates, almost talk everything ,

My favorite pastime is valleyball,playing cards or surf online. through college life,i learn how to balance beetween study and entertainment. by the way, i was a actor of our amazing drama club. i had a few glorious memory on stage. that is my pride.

[大学新生英语自我介绍范例

Good morning. I am glad to be here for this interview. I’m XX and I have been working as a XX at XX for ... years since my graduation from XX University. During my undergraduate years, I developed an interest in XX. Then I took several selective courses on XX and read a lot of literature in this field. However, it is one thing to study XX theory in university, but another to put theory into practice. That’s why I decide to be a XX to enrich both my XX knowledge and practical experiences.!

It is my honor to have this opportunity to introduce myself. Dear Sir:

My name is yangyan, I major in Clinical pharmacy and I will graduate in July this year.

Generally speaking ,i am a hard working student especially do the thing i am interested in. i will try my best to finish it no matter how difficult it is.

During the past few years, I have learned systematically the theory of profession and got the basic manipulative skills about Pharmacy experiment . I have alreadypassed CET-6 in english and CCT-2 (=the second level) on computer . Also I have won several honors . In the hospital, through the year of internship , I learned a lot of knowledge in clinical practice. It may be helpful to my future study .

Thank you .

[医生求职英语自我介绍