英语作文自我介绍【汇集20篇】

The main content of American culture is the emphasize on individuals value,the pursue of democracy and freedom,the promotion of deploitation and competition and the need of realistic and practicality.Its core is individualism:self first,personal need first,pursue of individual benefit and enjoyment,emphasize on achieving individual value by self-strive and self-design.This type of intentionally build up of personality and pursue customized individualism has its pros and cons,it gives incentives to people and make them exert on their potential and wisdom and as a result accelerate the development of the entire race and nation; on the other hand it is difficult to keep good relationship among people if everyone is egocentric thus make the entire society lack of unity.

Lei Feng was a model soldier， On December 1 8，1940， he was born in a poor peasant family in a little mountain village of Hunan Province. He didnt go to school till 1950. At the age of 18， he worked as a steel worker. He was often praised for his good job. On January 8， 1960， he joined the army. In the same year， he joined the Communist Party. He loved the Party and the people， and constantly did good for others. As a result， he became a model soldier. After his death， Chairman Mao called on the people to "Learn from Comrade Lei Feng". The whole nation were moved by his deeds. Lei Fengs spirit will live in our hearts forever.

雷锋雷锋是一名优秀士兵，1940年12月18日出生于湖南省一个小山村的贫困农民家庭里，他1950年才上学，18岁时做了一名炼钢工人，因工作好而经常受到嘉奖。1960年1月8日参军，同年加入中国共产党，他爱党爱民，经常做好事，所以他被评为优秀战士。

雷锋死后，毛主席号召。人民“向雷锋同志学习”，他的事迹感动了全国人民。雷锋精神将永远活在我们心中。

导语：企鹅是生长在南极洲的一种最为著名的鸟类了。它一年四季总爱穿着一套黑白相间的燕尾服，至今还从没见它换呢!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!

They survive in some of the coldest environments in the world - but even penguins appreciate a warm woolly jumper once in a while.

The mini knitted garments have helped save hundreds of flightless birds caught in oil spills providing protection from the elements and stopping them from ingesting poisonous pollution.

Knits for Nature a program run by The Penguin Foundation which conserves the little penguin population of Phillip Island 140km south-east of Melbourne has created up to 300 different designs over the years - and its all thanks to talented volunteers.

‘There’s a lot of hidden creativity out there said Lyn Blom of the Phillip Island Nature Park.

People love to know that they’re helping the penguins because they’re so cute and small and they waddle up the beach and they’re so feisty. But they need to be they live in a pretty tough sort of environment.’

A thumbnail-sized patch of oil can kill little penguins the smallest of the species measuring just 13 inches (33cm) and weighing 2.2lbs (1kg). The oil separates and mats their feathers breaking natural waterproofing and heating functions.

Ms Blom estimates she has knitted between 200 and 300 penguin jumpers over the years including ones in the colours of every Australian Rules football team in the country.

A staff member read an article in an English women’s magazine about knitting for guillemot birds and decided to adapt the designs.

‘There’s an awful lot of ladies out there who used to knit for their children and grandchildren. These ladies have spare wool and idle hands and they love to feel loved and needed and we love and need them’ said Ms Blom.

The Penguin Foundation recently staged a competition for the most creative jumper which received an enthusiastic response.

The Penguin Foundation rescues approximately 20 birds a year. They even have a stockpile of jumpers in case of emergency - such as the large oil spill near Phillip Island in 2001.

In that instance 453 Little Penguins were affected 96 percent of which were saved - most thanks to the jumpers.

【参考译文】

企鹅在世界上最寒冷的环境下生存，但有时候它们也渴望有一件温暖的毛衣。

由于石油泄露，企鹅们很可能接触到石油中的微量元素，甚至误食这些有毒的污染物。而迷你毛衣能给它们很好的保护，成功拯救了数百只企鹅。

为了保护菲利普岛(墨尔本东南部140千米处)上的小企鹅，企鹅基金会发起了为企鹅织毛衣的活动。到目前为止，基金会已经设计了300多种不同的毛衣款式，这都要感谢心灵手巧的志愿者们。

菲利普岛上自然公园的工作人员布洛姆说：“我们发现了很多隐藏的创意。”

“人们愿意帮助企鹅，因为它们又小又可爱，活跃极了。在沙滩上摇摆着身体走动时，它们又显得那么坚强。 这又是必然的，毕竟它们生活在这么恶劣的条件下。”

一滩指甲盖大小的石油就足以杀死一只小企鹅。最小的企鹅大概只有13英寸(33厘米)长，体重2.2磅(1千克)。石油会使得它们的羽毛缠结在一起且分散开，这样羽毛就失去了防水和保温的作用。

布洛姆自己就织了大约两到三百件毛衣，她还制作了一个毛衣系列，采用的是澳大利亚所有足球队的代表颜色。

之所以采用毛衣，是因为基金会的一名员工在一本女性杂志上看到了一篇给海鸟织毛衣的文章，随后就决定模仿这一设计。

布洛姆说：“许多女性朋友为自己的孩子织毛衣，她们乐意帮助我们，也会提供多余的毛线和手工，她们喜欢这种被爱被需要的感觉。基金会也非常感谢和需要她们。”

最近，企鹅基金会举办了一场“最具创意毛衣”大赛，获得了不错的反响。

每年，企鹅基金会拯救的企鹅大约在20只。他们甚至还有毛衣储备以应对紧急情况，比如2001年菲利普岛附近的大规模石油泄露事件。

那次事件中，453只企鹅受到了影响，当中96%的企鹅获救——最大的功臣就是毛衣了。

Nowadays playing computer games is a very common hobbies, especially among young people and teenagers. However there are many arguements on whether computer games are advantageous to people or not.

Although many people doubt the advantages of computer games, if used wisely computer games can actually be used in educational purposes, for example typing games to allow students to learn typing English or Chinese. Also another advantage of computer game is that the games may be played together among friends or family members, which may improve the relationship between family members and allow parents to know more about their children on their hobbies and interests.

However computer games if misused can also have very bad effects on human beings. Firstly spending long time in front of the computer screen will bring to various health problems, such as eye sore, back pain and headache. Also if people spend too much time on computer games rather than the work they should do, for example school work for students and projects and presentations for employees, it may have bad effects on their real life and social life status.

It is true for everything that it is beneficial if used wisely, therefore although computer games are widely said to be bad for people, it can still be used as a good tool if used wisely.

Teachers, students, everybody!

My name is ××, a little boy love reading.

I  have a pair of big eyes, high bridge of the nose, mouth, adults say cherry small mouth, I want to tube size, he still in my eyes, because I like reading the most. My eyes wet, is very good-looking, he is my the window to the soul, in order to protect him, I cant work, for example, when reading a book after I pay attention to the distance of eyes from the book and pay attention to rest in a timely manner. And my hair black, black, like a dark cloud. A mother said: lets hair is the same ah, you are black hair, I am black hair, your father is. Is a family ah. My hair is like eyes, swarthy. Mom and dad said: its nice of your hair. My hair is black and very hard, not only like my personality is straightforward. Im fine to identify, as long as see black hair, big eyes is me. Remember, dont have.

I am a love of making friends. Remember in first grade, wei classmate off an eraser, I helped him pick it up, since then, he would have regarded me as a friend. How, I love to make friends?

My specialty is: drawing and the violin. My ideal is: after be brought up as a painter or a famous violinist. Like me?

Thank you very much!

老师们,同学们,大家好!

我叫××。要想了解我,请往下看。

长着一双大大的眼睛,高鼻梁,嘴嘛,大人都说是樱桃小嘴,我想管他大小呢,还是我的眼睛重要,因为我最喜欢看书了。我的眼睛水灵灵的很好看,他是我心灵的窗户,为了保护他,我可没少下功夫,比如说,在看书时我既注意眼睛离书的距离又注意及时休息。还有我的头发,乌黑乌黑的,像黑黑的云一样。妈妈说:咱们一家头发真是一样呀,你是黑头发,我是黑头发,你爸爸还是。真是一家人呀。我的头发简直跟眼珠一样,黑黝黝的。爸爸妈妈都说:你的头发真好呀。我的头发不仅黑而且很硬,像我的性格一样爽直。我很好辨认,只要看到大眼睛黑头发的就是我。记好了,别找错啊。

我是一个爱交朋友的人。记得在一年级,魏同学掉了一块橡皮,我帮他捡起来,从此,他就把我当成了朋友。怎么样,我是不是爱交朋友呢?

我的特长是:画画和小提琴。我的理想是:长大后当一名画家或著名的小提琴家。喜欢我吗?

谢谢!

My favorite little animal is a kitten, our family has raised a kitten, it is sent by neighbors. Because now the kitten is dead, so I will often think of it.

The cat looks very beautiful, he has a white hair, claws under the pad can make him walk without a little bit of sound. The most unique is his eyes: one eye is blue, the other is green. Blue eyes like sapphire, green eyes like emerald.

Kitten is very greedy, and sometimes a pound of heavy fish soon "destroy" the. Once, my mother made a bowl of fish soup. Kitten jumped on the table, relish eating up. When I was eating, it was found by me, so I taught him a bitter meal. The kitten hung his head, as if to say: "I no longer dare." I immediately laughed.

Now that kitten is dead, since then, every time I see the kitten, and it should play some. Kitty, where did you go?

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。

I am from XXX a communist party official community members, I call XXXX. On December 12th XXXX to join the Chinese communist party, and in XXXX on dec. 15 in July, xxxxwill achievebecomes smooth finish school joins XXXX district branch organization of this glorious.

During the period of school I studied the financial accounting major, and the students management organization, in their constant efforts become an excellent student body President. In his work, the first learned to work, a good leader should have excellent work unceasingly, will have good interpersonal relationship.

Learn financial, enlightened life. XXX, let me understand the professional study, to be one step a footprint, the collapse of tashi. Now that Im graduating from college, but walked into the classroom society, I knew I have many insufficient place, so after learning, I will like to sit in the senior leaders, learn a lot.

In order to progress to the community, in order to reflect the progress, the streets of advanced nature of the communist party of China, let us work together!

以下是由语文迷网小精心整理提供的关于高考的英语写作技巧，一起来看看吧。

一、要善于模仿

一些同学的办法往往是背一堆范文，然后再到考场上进行一个“剪切”、“粘贴”的工作，真正的模仿重点永远要放在一定的句式结构上，而非个别的词汇。有一个句式说：“…for the simple reason that…”表示某种现象的原因是什么，用在高考(课程)写作中，我们就可以拿来解释为什么自行车在中国如此的流行：“The bicycle is very popular in China for the simple reason that…”。然而，很多同学一谈到原因仍然是“…because…”。如果要表示“总是能够”的概念，很多同学提笔就会写can always，但理想的句子应该是用双重否定表示强烈的肯定，用never fail to。

二、要灵活变通

在批改过上万份同学们英语(课程)作文中，经常能发现一些将中文生硬地翻译成英文的表达法。有一句话叫做“立志如山，行道如水”，写英文作文，一定要有决心把它写好，有信心把意思表达清楚，这是“立志如山”;但关键是遇到问题时要有个灵活的态度，能像流水一样变通解决问题。有个翻译界的故事说：在某大型国际会议的招待会上，一道菜是用鸡蛋做的。与会的客人问翻译：“What is it made of”本来是非常简单的一个问题，结果翻译太紧张，忘了“egg”这个词，但是他急中生智，回答：“It is made of Miss Hen’s son.”这里，就是一个灵活变通的范例。绕道表达，是写作中应该常常运用的一种方法。

三、要细心观察

注意英语中一些表达上的习惯。比如在正式文体的写作中，很少用 “it isn’t”这样的略缩形式，而往往是一板一眼地写作 “it is not”。同理，在正式文体中的日期一般不缩写，阿拉伯数字一般会用英文表达(特别长的数字除外)。

许多同学在写作文时，习惯于把 “since” “because” “for”这样的词放在句首引导原因状语从句。事实上，在我们见到的英语报刊杂志文章中，这样的从句一般都是放在主句之后的。另外, “and”也常常被误放在一句话的开头，表示两个句子之间的并列或递进关系。其实，经常留心地道的英语文章能发现，如果是并列关系，完全可以不用连词;如果是递进关系，用 “furthermore” “what is more”更为普遍。

四、要心有全局

英文写作如果结构意识良好，应试写作就简化成为一个填空的过程了，适当地填入观点、素材，文章就自然而然立起来了。

临考在即，同学们要牢记英语写作的基本要领，特编顺口溜如下：细审题，巧构思，列要点，防遗漏。写日记，同汉语;书信，通知格式要牢记。看清图表细梳理，写人记事按顺序;完稿后查遗漏，整洁干净莫忘记。

Hello, my name is Linda. I have a nice bedroom. It is very big. My sister and I live there together. Want to hear what it is like? Guess. Guess what? My bedroom is not like your bedroom.There is a little window in the wall of the bedroom, it is very small. Every time my sister and I was going to bed, always want to have a look outside at night through the little window. My sister and I are very like this small window. Well, what else? Guess! There is a big bed, bunk bed into this。 I usually sleep on the floor, my sister slept in the lower berth, it is very soft and comfortable. There is a big beautiful table, I and sister after school in the table above, write the homework。 There is a lamp on the table on the small table lamp, it is very cute, also very bright. And it is one of the most novel small table lamp also does not hurt the eyes, and bright. Oh, there is a delicate small alarm clock. It is very beautiful, always on time to call my sister and I get up to go to school, because with it, my sister and I have never been late for school. I love my bedroom. You? What does your bedroom look like? I say.

译文：

你好，我叫Linda.我有一个漂亮的卧室。它很大。我和姐姐一起住在里面。想听听它是什么样子的吗?猜一猜。猜到了吗?我的卧室与你们的卧室不一样哦。

有一个小小的窗户在卧室的墙上，它非常小。每次我和姐姐准备睡觉时，总是要从那个小窗口里看看外面的夜景。我和姐姐都非常喜欢这扇小窗户。嗯，还有什么呢?猜对了!还有一个大大的床，这个床分的上下铺，平常我睡在上铺，姐姐睡在下铺，它非常柔软舒适。还有一个大大的漂亮的桌子，平常我和姐姐放了学就在那个桌子上面写作业。还有一盏放在桌在上的小台灯，它很可爱，也很亮。而且它是一个最新型的小台灯，又明亮还不伤眼。哦，还有一个精致的小闹钟。它很漂亮，总是准时的叫我和姐姐起床去上学，就是因为有了它，我和姐姐从来没有迟到过。我爱我的卧室。你的呢?你的卧室是什么样子的呢?给我说一说吧。

good! i jiaoli its far this year, 12-year-old, changsha city in the rice fields junior secondary school reading. i am good at playing table tennis, china is the second in the team; i like playing the piano, for two years has been a five-level 5. i like to eat kfc, so why fat. this is the first time participate in the english game, or lack of experience, but i hope i can play great! next, i bring you a song - edelweiss

Good morning，ladies and gentlemen. I am Leo from Guangzhou Zhengxin International School. I am a sunny boy. My family love me and I love them too. My mom works very hard every day. She comes home very late in the evening. Do you know how to help the parents at home? Let me tell you about that.

女士们先生们早上好，我来自广州正心国际学校，我是阳光男孩，我们全家都很爱我，我也很爱他们，每天爸爸妈妈工作都很努力，晚上都很晚下班，你知道如何在家中去帮助妈妈吗？让我告诉你

Usually my dad cooks for us. Sometimes I help my dad to wash the vegetables. Sometimes I set the table. I always wash the dishes when we finish eating. After I finish my homework I often water the flowers. I also look after my pet fish. I feed the fish before I go to bed.

有时我爸爸会给我们煮饭，那我也会，帮助我爸爸去洗菜，摆餐具，饭后我总是习惯去洗碗，写玩作业后我会主动去浇花，以及在睡觉之前我会去喂鱼。

I really enjoy helping my parents at home. Do you think I am a helpful boy? I think so! Thank you! 我很喜欢帮助爸爸妈妈去做事，你觉得我是一个好帮手吗？我想我是！谢谢！

Good morning, ladies and gentlemen!It is really my honor to have this opportunity for an interview. I hope I canmake a good performance today. Im confident that I can succeed. Now I willintroduce myself briefly. I am 26 years old, born in Shandong province. Igraduated from Qingdao University. My major is electronics. And I got mybachelor degree after my graduation in the year of 2003. I spent most of mytime on study, and I’ve passed CET-6 during my university. And I’ve acquiredbasic knowledge of my major. It is my long cherished dream to be an engineer andI am eager to get an opportunity to fully play my ability.

Hello! My name is Chen Danqing. My English name is Joy. Im 14 years old.

Im a happy girl. I have a happy family. My father and my mother are both office

workers. Theyre busy. But at weekends, they always cook nice food for me. Im

happy in the family. I love my parents and they love me very much.

Im a student at Don Zhou Middle School. It is very big and beautiful.

There are many classroom buildings and office buildings. Besides the buildings,

there is a big playground. After school, there are lots of boys playing

basketball on it. I think they are happy. There are a lot of flowers and trees

in my school. They are beautiful. I like my school. In my school, I have many

friends. All my friends are polite and helpful. My friends are all nice to me.

They can make me happy. So I like playing with them.

My hobbies are listening to music and reading. I like pop music very much.

I dislike sports because Im not strong. Its hard for me.

I have a happy family, a beautiful school and many nice friends. I enjoy

every day.unjs.com

Teachers Day

The Teachers Day will come soon.At first,I want to extend my greeting and best wishes to my dear teachers.

I still remember the year when I failed the collage entrance exmination.Iwas feeling lost,and no idea about what my life is going to be.My teachet came to me,and she said she understand how I felt inside now.She also told me its very common that students who are like me will go though a hard time. She told me that failure was a part of life, which was not the end but a new beginning. And she encouraged me to go back to the school to start a new. I was convinced in the end and decided to give another try.

Now Ive graduated from collage and got a very good job.I know all my success owns to my kind teacher. Ill work harder and never give up again.

Hello!My name is Liu Ya Min.I am a Chinese girl.I am fourteen.I am a middle

school student.Frankly speaking,Irene is not beautiful.I like autumn,the ground

is covered with fallen leaves.I like basketball,but I dislikes sports.I very

love sit in the sun.I like sduty,sing and shopping,too.I think I am a happy

girl.My family is not big.There are my parents,my two brother and I.Being the

eldest,I must look after my brothers.My desire was to become a writer.

Good morning, ladies and gentlemen! Its my honor totell you about the changes of my school.

When you walk around our school, you can see various flowersand trees everywhere. At the same time, you can smell the taste, breathe freshair. Its a nice place for us to study.

Please look at the new building over there. Its ourlibrary that was painted white again this year. It not only looks morebeautiful, but also has increasingly more books than before. Reading differentkinds of books can enhance our horizons and increase our knowledge. I stillremember I entered the school two years ago, the library was old enough and Ialways couldnt find my favorite comic books. Therefore, I often complained tomy classmates that the library was out of fashion that we were not able tolearn fresh knowledge in it.

What was even worse, as a member of school basketballteam, my partners and I had few chances to practice, as the playground was toosmall to play andfull of so many students after school. Luckily, I dont haveto worry about that anymore, because our playground is large enough for all ofus to play games, and basketball court is also bigger. Thats wonderful!

My school has changed a lot, for it is more beautifuland modern. I love my school.

[介绍美丽的校园英语作文

There are four people in my family。 They are my father， my mother， my elderly brother and I。 My father is a computer engineer。 He works in a big company in my city。 My mother is a nurse。 She works hard to help patients。 But she is always busy and always comes home late tiredly。 My brother is three years older than me。 Now， he is a middle school student。 He is sunny and easygoing。 He can help me a lot in my study。 I am primary school student。 I love my families。 So do they。

我家有四口人。他们是我的父亲，我的母亲，我的哥哥，我的父亲是一名计算机工程师。他在我城市的一家大公司工作。我的母亲是一名护士。她努力帮助病人。但是她总是很忙，总是很晚才回家。我哥哥比我大三岁。现在，他是一名中学生。他阳光明媚，很随和。在我的学习中他可以帮我很多。我是小学生。我爱我的家庭。所以他们。

描写妈妈的英语作文：我的妈妈

My mother

My mother’s name is nancy. She has long hair, two big eyes My mother likes sports and shopping. Her favourite sports are football and yoga. And her favourite food is ice cream. She also likes dogs and cats.

My mother is a high school techer, she works very hard and does very well in the school.

My mother also concerns my study. She always helps me study and play the piano. She is very glad when I make progress.

My mother loves me very much. And I love my mother too!

描写妈妈的英语作文：我的妈妈

My mother

My mother is very kind and beautiful although she is not tall.She is 42 years old this year.She is a nurse,so she is always very busy day and night.But she loves her job,and she often takes care of her patients.Of course,she also likes singing,dancing,cooking and shopping,but she almost no time to do them.

Oh,I love my mother.

描写妈妈的英语作文：我的妈妈

I have a great mother. She cares much about me in my life and study.

In the morning, she gets up early to make breakfast for me. When I was little, she prepared my schoolbag. But now, she tells me to do it by myself. Because she thinks I have been old enough to do it. Besides, she always checks my homework. When I finish my homework, she checks it and points out the mistakes. She is very careful and helps me a lot.

I love my mother.

Hi, My name is Dawn, Im from the beautiful ancient city of Kaifeng. As you can see, I am a very casual girl, and a lot of people here, like 18-year-old, I love a lot, I love guitar, love to sing love dancing, very fond of English, I am very love to watch "Prison Break", like the actor micheal clever wit.

I like making friends, and hope you will be able to and I have become good friends, I think I will, and you get along with.

考研复试英语口语一般涉及这样几个话题，象自我介绍、家乡和大学的状况、研究生期间的科研设想等等。如何在这些地方让老师满意呢？下面这些话题的模板和范文，供广大考生参考。

自我介绍

Good morning. I am glad to be here for this interview. First let me introduce myself. My name is ***, 24. I come from ******, the capital of *******Province. I graduated from the ******* department of *****University in July, 2001. In the past two years I have been preparing for the postgraduate examination while I have been teaching *****in NO. ****middle School and I was a head-teacher of a class in junior grade two. Now all my hard work has got a result since I have a chance to be interviewed by you。

I am open-minded, quick in thought and very fond of history. In my spare time, I have broad interests like many other youngers.I like reading books, especially those about *******. Frequently I exchange with other people by making comments in the forum on line. In addition, during my college years, I was once a Net-bar technician. So, I have a comparative good command of network application. I am able to operate the computer well. I am skillful in searching for information on Internet. I am a football fan for years. Italian team is my favorite. Anyway, I feel great pity for our countrys team。

I always believe that one will easily lag behind unless he keeps on learning. Of course, if I am given a chance to study ****** in this famous University, I will spare no effort to master a good command of advance ******。

Good morning, my dear teachers, my dear professors. I am very glad to be here for your interview. My name is Song Yonghao, I am 22 years old. I come from Luoyang, a very beautiful ancient city. my undergraduate period will be accomplished in Changan university in July, 2004; and now, I am trying my best for obtaining a key to Tongji University。

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. When I was sophomore, I found web design very interesting, so I learned it very hard. To weaver a homepage for myself, I stayed with my personal computer for half a month, and I am the first one in my class who own his homepage. Furthermore, I am a person with great perseverance. During the days preparing for the first examination, I insist on running every day, no matter what the weather was like. And just owning to this, I could concentrate on my study and succeeded in the end。

Well, in my spare time, I like basketball, tennis and Chinese chess. Also English is my favorite. I often go to English corner to practise my oral English on every Thursday, and write compositions to improve my written ability. But I know my English is not good enough, I will continue studying。

Ok, that is all, thank you for your attention。

[考研复试英语口语自我介绍经典作文