5篇初中英语作文精彩20篇

考辅P42

1.IgaveTomthebook.／／

2.Heboughthismothersomeflowers.／／

3.Thebridgewasbuiltbyworkerslastyear.／／

4.Wehavetofinishtheworktoday.／／5.Hewilldohishomeworktomorrow.／／

6.Wecleantheroomseveryday.／／7.Thewriterspent3yearsonthebook.／／

8.Itisabookwithalotofbeautifulpictures.／／

9.Thebooksoldverywellduringthefirstweek.／／firstweek.

10.Marywastheonlyoneintheoffice.／／

11.Shefinishedherworkat10o’clock.／／Shedidn’12.Shehadtotakeataxihomebecauseitwastoolate.

13.LizaandMikearrivedattheGreatWallintwohours.

14.Theywerehappytogettothetop.／／

15.TheyenjoyedthemselvesontheGreatWall.／／

16.ThepostmansentSusanandTommyapaperbox.

17.Theyopeneditandfoundapresentfromtheirfriend.

18.Theybothlikedthepresentandfeltveryhappy.

19.Alicedidn’tfeelwelltoday,soshewenttothehospital.

20.Thedoctoraskedhersomequestions.／／

21.Thedoctordidn’tgiveheranymedicineintheend.

（全真１）

1.ThecapitalAirporthasbeeninusefor20years.／／

2.ThecapitalAirportisthelargestoneinChina.／／

3.Ihavenevertakenaplane.MyfriendLiPing,either.／／

（全真２）

1.Fathergave$20formetobuysomebooks.／／

2.IwasexcitedwhenIsawsomanygoodbooksinthebookstore.

3.ButsomebookswouldcostmorethanIhave.／／

ButIdidn’／／（全真3）

1.ManyChinesefriendswenttotheparty.2.Tonywasgivenalotofpresentsbyhisfriends.／／Tony’

3.SeeinghisChineseteacheratthepartymadeTonyveryhappy.／／（全真4）

1.Iwanttoeatsomething.／／2.Therefrigeratorisempty.／／3.Bobspentfifteenyuanonthehamburger.／／／（全真5）

1.Mr.Wangdoesn’tworkinthatfactoryanylonger.／／

2.Mr.Wanglefthomeearlierinordertocatchthebus.3.Mr.Wangfindsitnoteasytogetalongwiththatyoungguy.／／（专家1）

1.Manypeoplewentshoppingyesterday.

2.Janespent4hourstobuyNewyeargifts.／／

3.Shewassotiredthatshecouldn’twalkanylonger.／／

（专家2）

1.Myfriendssaidtome,“Areyoufree?”

2.Shewantedmetogoshoppingwithher.

3.Shethinksitapleasuretogoshoppingwithafriend.

Tuesday is my birthday , my boyfriend spent with me . This birthday is the

first birthday who spent with me . We had a good evening , he sent me a present

and we had a delicious dinner. I am very happy that my roommate also sent a

present to me .

I found something have become better , I believe the god is blessing me! He

gave me some hard things and bad luck ,then gave me happiness and lover .

I have touched with my good high school classmates ,they are also in

Shanghai.

I thank the god , he let me studay more in the society.( thank god for all

he let me study in the society.)I thank myself , I am a optimistic girl , I am a

idealism girl . I need more social experience.

Time flies so fast . I will to be a middle school student . In my class , I have a good teacher . Her name is Zhu Xihui.

She is my math teacher . She is good at math . Many math teachers ask her quastion .One day , Iwent to her office asked her quastion . She explained it for me . Careful and clearly .My math teacher Is my first teacher . The teacher I never forget . I will tell her : I love you ! You are my teacher . I’m very happy !

Mobile phones are useful and popular. But they are also bad for us

students. On the one hand, some of us like playing the games, they will forget

the time to rest. If they dont get enough rest, they will feel sleepy in class.

And even they are having a class, they always think about the games. They are

not good for our study. On the other hand, there are a lot of students who like

reading e-books on a mobile phone. Its good to read. But reading on a mobile

phone for a long time is not good for our eyes.

There was a basketball match between class 3 and class 4 yesterday

afternoon. before the match, all the students thought class 3 would win the

match because some good players were in the class.

The match began, And all the players played very well.other students

watched and shouted for their teams. It was an exciting match. When the first

half of the match ended, class 4 fell behind class 3. The players in class 4

tried their best to catch up with them in the second half. With the shouts "come

on", the players in class 4 won the match.

The match was over. How wonderful the match was!

Live with thankfulness Do you know Thanksgiving Day?Do you know why human thank God? Thanksgiving falls on the fourth Thursday of November, a different date every year. The President must proclaim that date as the official celebration.

Thanksgiving is a time for tradition and sharing. Even if they live far away, family members gather for a reunion at the house of an older relative. All give thanks together for the good things that they have. In this spirit of sharing, civic groups and charitable organizations offer a traditional meal to those in need, particularly the homeless. On most tables throughout the United States, foods eaten at the first thanksgiving have become traditional. What should we thank?

The thankful great universe provides the environment of existence for us and give us sunlight, air, water and everything in keeping with we existence of space, bring storm to let us accept to toughen for us, bring to us mysterious let us look for. The thankful parents give us the life, make us feel the merriment of the human life, feel the genuine feeling of the human life, feel the comity of the human life, feel happiness of the human life, also feel hardships and pain and sufferings of the human life!

The thankful teacher works with diligence and without fatigue everyday of teach, give us knowledge ability, put on the wing which flies toward the ideal for us. The thankful classmate and friend grows up road of, let I no longer standing alone in the itinerary of life;The with gratitude is frustrated and let us become in a time the failure stronger.

[ 多与家人朋友沟通交流初中英语作文

The summer vacation had come round again。 I was happy that I could forget about school at least for a while。 Lest I fool around all through this summer vacation， I made a plan as to how to spend it。 First， I thought I should go over all those things my teachers taught in the previous term so that I could have a better understanding of them。 Then I thought I should take up some forms of exercise， such as walking， running rowing， to keep me physically strong。 It stood to reason that with such a good plan I should make the best of my vacation time。 I did， because I lived up to what I had planned。

郭明义参军之前，只是初中学历。在部队时，他抓住“缝隙时间”学习英语。来到矿山工作后，他每天晚上都骑自行车往返20多公里，到市内的夜校学习。

1992年，国家“七五”重点建设项目——齐大山矿扩建工程进入开工准备阶段，郭明义又考入英语强化班进修一年。1993年工程开工后，他担任了33台、每台价值1000多万元、载重量154吨生产汽车——电动轮现场组装的英文翻译。

美国犹格里德公司澳大利亚售后技术服务部中国区总管，两次劝说郭明义到他所在的公司工作，并承诺给予比他当时收入高6至7倍的工资，可老郭不为所动，说：“我上党校、夜校、进修，都是企业支付的学费，还发给我补贴。我对企业有感情，我要回报企业，对企业的发展有信心。”

虽然电动轮的进口备件质量检验不归郭明义负责，但每次对着备件做翻译时，他都认真检查，先后发现了5台电动轮有质量问题。公司与外方据理力争，最终获得10万美元的赔偿。

good environment can make people feel happy and fit . to improve the environment means to improve our life.

we should plant more trees and flowers around us . we shouldn’t cut them down . we should stop factories from pouring waste water into the river and waste gas into the air.

whenever we see litter on the ground , we should pick it up and throw it into dusbins. never spit in public. don’t draw on public walls. it’s our duty to protect the environment.

She is such an ideal singer!

She is a girl with a lot of talent. She is a girl but she has individuality like a boy. On the stage, she sings and dances so well. She is so happy and she makes us excited… Can you guess who she is? Yes, she is Li Yuchun, the winner of "Super Girl 2005."She is a student of Sichuan Music College in Grade 3. She is twenty-one this year. She is 1.74 metres tall. Now she is very popular in China and even in the world. I know she worked hard in the past, and has succeeded today. Ill learn from her and try my best to achieve my dream.I like her because she is so cool and lovely. I love her because she makes me feel happy. I enjoy her because she is independent and she has the individuality of herself.

Li Yuchun, Ill cheer for you forever!

[歌手初中英语作文

读后感是指读了一本书，一篇文章，一段话，几句名言，一段音乐，或者一段视频后，把具体感受和得到的启示写成的文章。小编精心为你整理了初中英语读后感，希望对你有所借鉴作用哟。

I have read the book called Readaholic recently. I can know a lot through reading. I can learn some foreign culture and habitude . It is really interesting. Most of my classlates are interested in it.

At first, I found it that it is hard to understand the articles. There are a lot of new words and difficult sentences in it. But these beautiful illustrations attracted me. So I read these stories again and again. Finally,I learnt many new word.I felt very excited. My English is very poor in the past, through reading , my marks has been largely improved.

In this book, there a module introduces traditional life in the UK. The traditional life in China is different from that in the UK. For example,In China,we should not give a top to a waiter in a restaurant. But in England you must do it. I learnt so much knowledge by reading. Maybe I will use them when I go to England in the future, I will get well with everyone in England. Then I will introduce the Chinese culture to them.

This book also introduces a lot of famous cities ,such as Beijing,Oxford,London and so on. Londn is my dream city. It is a wonderful and old city. There are many places of interest in London . Tower Bridge, London Eye, Houses of Parliament, St Pauls Cathedral and Millennium Dome, all of the above attractions are popular for holiday. I like London eye best. It is a very large wheel that I can go around in to get a fantastic view of London.That is the weather is clear. Do you like London, too?

It is a fantastic book, I think. It help us to open our eyes,and learn a lot about the world . Perhaps you will use them when you grow up .Maybe sometimes you will feel tired when you read it ,just like me ,but do not worry if you do not understand everything –just guess what it is saying. In the end, you will find how funny is the book.

In a word , I love this book. It improve my English a lot . Now I can speak or write English easily .My English is very pround of me. At the same time, he warned me not be conceited, but should guard against making mistakes. I feel really excitad.Because I have made progress. That sounds wonderful. Come on, let us read the book.I am sure you will enjoy it.

Love for my parents

Our parents give us much love every day,so we should give them love,too.That was a holiday,I stayed at home alone.I made a dinner for my parents.Because I was only seven,the meal was really awful.But my mother never stopped saying,"Its very delicious!"She said she was very impressed.

How do you give your parents love?

Third, I have been standing at a fork mouth of life. Looking back, looking at the footprints of your own growth, it does mean something. Love is Xin Qijis "ugly girl", his first words as we age children from small to large portrait.

"The young do not sorrow taste". Childhood, from just remember to middle school, always feel carefree. Hungry, looking forward to dinner; thirsty, looking forward to drinking water; scared, looking forward to Mom coming; frightened, looking forward to Dads side. These, call it, or just show it with tears and cry, will be able to get satisfactory results. Childhood is so simple, and it is so real. A little bigger, become a teenager, looking forward to be praised by the teacher, looking forward to the applause of the students, looking forward to full marks. When I was praised, like psychological flow with honey; whenever there is out, it went to the jubilant mom and dad to show off a beam with joy. At that time, how simple and innocent.

Now, the childhood in my mind has become an eternal memory, the dream of the flower season is also like a distant landscape, childhood wind like, feel, but can not see, can not touch, there are countless ways of life before, I have to walk with heavy steps wandering. Just like the taste of sorrow now". So, what about the future? Is it to open up life or to enjoy life? Yue Feis sake, Gou hardships, let me dance, father chose the former; comfortable air conditioning, cola fun, crispy potato chips, the excitement of the game so I choose the latter. Both steady stand in the balance at both ends, not the severity of the conflict scale blocking my schedule. Secondary education in less than a year will end after nine years of baptism we have strong body, sucking countless knowledge in the motherland to defeat in the mighty wave crashing on a sandy shore,? No, can not, the process of growth is painful, "enjoy life" although intoxicating, but if our youth long drunk, do not laugh for people?

Therefore, in the face of growth, we must bravely overcome the idea of ease in mind, and open up a perfect life course.

英语作文：

Tomorrow is fathers day, I want to send two gifts for dad.

I take everyone to take a nap at noon, I took out fifty yuan pocket money to buy a gift, to the flower shop, I dont know which one to buy, this I see that look, finally found the right flowers, gave the money to the boss. I went and bought several packets of paper folding wishing star, came home, I put the flowers in the vase, add some water inside, then hid the flowers where nobody pay attention to. Ok so, I started to fold the wishing star, every star, I wrote a blessing, a star, the two stars were folded · · · · · · one hundred and seventy-nine, dont look at these small stars, but each star in with my blessing to my father. Wishing star after the discount, I put it in a nice little gift box, can look forward to come tomorrow.

Early the next morning at six o clock, I quietly walked into the room, I put the flowers and wishing star on the table, I was out of the room. Slowly fragrance filled the room, dad was smoked aroma woke up and found it still reads: dad happy fathers day. Dad smiled on his face.

中文翻译：

明天就是父亲节，我想给爸爸送两份礼物。

中午，我趁大家睡午觉的时候，我拿出五十元的零花钱去买礼物，一到了花店，我却不知道要买哪一种，我这看看那看看，终于找到了合适的花，把钱给了老板。我又去买了几包折许愿星的纸，回到了家，我把花插进了花瓶，在里面加点水，便把花藏到没人注意的地方。花弄好以后，我就开始折许愿星，每一颗星星里我都写了一个祝福，一颗星，两颗星······共折了一百七十九颗，别看这些小小的星星，但每颗星星里都包含着我对爸爸的祝福。许愿星折完后，我把它放在一个精美的小礼盒里，期待着明天能快点到来。

第二天清晨六点钟，我悄悄地走进房间，我把花和许愿星放在了桌上，我便走出了房间。慢慢的香味便弥漫了整个房间，爸爸被香味给熏醒了，发现上面还写着：爸爸父亲节快乐。爸爸脸上露出了笑脸。

One day, cat is in the basket. It‘s very lazy. It is sleeping. Now the cat‘s food is beside the cat. One mouse is very hungry. It is eating the cat‘s food. The cat‘s food is so yummy.

The cat wakes up. He is behind the mouse. He wants to catch the mouse. So,he is chasing the mouse. The mouse is afraid. He jumps onto the door. But, the door is high. The cat can‘t catch the mouse. The mouse is under the chair now. It is running.The cat still can‘t catch the mouse. The mouse runs fast. It runs into the hole. The hole is small. But, the cat is big. It can‘t go into the hole. So, the cat is angry and tired. It is crying. It‘s very sad. But the mouse is very happy!

How is it, you do not believe it? Look, she has left her footprints everywhere.

The air is so fresh, the weather is so blurred. The sun is warmer. Her million gold happy kiss all things, so gentle, so comfortable.

Its time to fall!

Section just after the autumnal equinox, they feel a bit cool. Gradually yellow leaves can not withstand the wind and rain to destroy the destruction of a piece of leaf leaves falling in the high and low roof, falling on the road in large and small, falling in criss-crossing the river.

Autumn rain is light blue, crystal clear. 10 million silver, rippling in the air, fans of the veil, draped over the dark faint fields. The rain fell in the water, like a thrown into the crystal jade plate, splashed grain pearls; rain fell on the tree, like to branches with soft hair; rain fell to the ground rolled up a burst of smoke, the land seems Blooming out of a laughing dimple.

The autumn of autumn, grooming the mountains, nourishing the earth. The puddle of water on the ground is full of water. They slowly flow to the big ditch, brought together this years affection and hope of the coming year. This autumn is as if it is sweet wine, dedicated to the breeding of all things of the land, dedicated to the harvest full of joy ... ...

Autumn is not annoying. Behind the misty rain curtain is a sweet smile. It is to celebrate the birthday of the motherland smile; that is the fruit of the mountains and plains of the red face. "Autumn autumn rain sad people" era, in the golden autumn of the motherland, has long gone.

I look up at the blue sky, think the sky is more sunny, the sun is more brilliant, a blossoming light like white clouds, like to the blue sky embroidered with white flowers. This view makes the breathtaking.

Autumn rain is not only wonderful, but also full of new hope.

Ah! Autumn rain - intoxicating autumn rain.

算起来，自己也上了10几年的学了，和老师打的交道也不算少的。自打到了初三，我和老师的关系就越来越密切了，隔三差五的，我就要去和老师交流下感情，那个点击率啊，真是高啊。每天，必有一次谈心。我不知道为什么，我只知道，老师特别喜欢和我聊天。

第一次月考完了之后，我不小心，在全年级进步了70多名。我并没付出什么努力，该怎么玩还是怎么玩，可能就是老前辈们说的，雨花石偶尔反一下光。所以，我上课要打瞌睡的这个习惯还是没改。有一天，我和同桌闹了矛盾，她就不帮我看着老师了，任由我睡，她也不管了，正好，上课的时候是班主任的课。结果可想而知，我被老师抓住了。老师说：“刘柏森，下课来下办公室。”我站起来点点头，说：“我可以坐下了么？”“你给我站着。”“拜托，老师，昨晚上看历史书来着，没睡好，站着，我睡不着。”全班一阵安静。老师笑了(历史老师)：“什么？昨晚上看历史？嗯，不错，你坐下吧……”忽然反应过来，“你什么意思啊？看历史你就不站了啊？站着，没什么好说的！”下课后，我到了办公室里蹲下。老师回过头，看着成绩表说：“你是不是考得好嘛！看下你成绩嘛！比上次期末……”她拿着尺子从成绩表上划下来，划到我的名字上，愣了一下，清了清嗓子说：“我们先不说这个成绩的问题，我们先说一下你上课睡觉的问题……”我无语。

某天，英语老师上课的时候，写了个句子出来全班狂笑，我也跟着笑。老师问：“这个句子错在哪里？刘柏森，你来说下。”我笑不出来了。别说，我还真没看出来哪是错的，我站起来，盯着那个句子半天说：“不知道。”老师提醒道：“几个动词了都？”我数了数：“好象多了点，3个。”老师说：“这什么句子都不是，是按照主语从句搞出来的，主语从句我都多少年没用过了，我都是二昏二昏的，你们还敢用？”我又笑起来。老师白了我一眼：“还笑，就是你写的！”我一愣，我写的？老师又接着说：“这就是你写的，还高手呢，写的都是什么啊？”我看了看我的作文本，我写的是“。”于是我说：“那个不是我写的。”“反正也是半斤八两。”我再看了看：“没错，格式是正确的。”从此，就没人再把我当成英语高手了。

摸底考试完了之后，我下降了很多，原因我就不说了，班主任大人一看成绩，顿时火冒三丈，把我叫到办公室说：“怎么回事你？是不是想其他去了？手伸出来，我要好好教训你。”说罢，拿起那把教棍，对着我的手一通乱打，然后问：“记住好好学习没有？”“记住了。”“好了，你走吧。”我抬起头，刚要走出去，老师又把我叫住：“回来！”我问：“还有什么事？”老师说：“你还有什么没说的？”我想了想，没想出来，旁边一个蹲在地上的哥们说：“一看就是不怎么进办公室的，你忘了说‘谢谢老师’了。”我一听，赶紧说：“谢谢老师。”老师点点头：“嗯，去吧。”我的那个汗啊……

我现在正在期待究竟在初三下期还会有什么样的事情发生……

I used to receive gifts like a basketball, a swatch or a CD. But the gift

I’m looking forward to is a bicycle though I can’t ride it now. How I want to

learn it well so that I can ride anywhere I want to go! Every morning, it is my

father who always drives me to school in all kinds of weather. Especially in the

past few days, he has worked hard until midnight. If I ride my own bicycle to

school, he will be able to sleep a little longer and work a bit harder. I hope

my dream of owning a bicycle will be realized in the shortest possible time.

I have a white cat. It is a present from my mother on my birthday. It’s very beautiful. I call it Mimi.

Mimi is very naughty. She likes to play with me. She often runs here and there and likes running after something. Mimi’s favourite game is playing with balls, ropes and stones. I love it very much. Sometimes, Mimi is very gentle. She likes to wash her face and doesn’t play with me. After lunch, Mimi often lies on the sofa to sleep. When I go home, Mimi often jumps onto my knees. I like to give a bath to Mimi.

Oh, my baby cat brings me much happiness. We are good friends. I love Mimi.

Pollution around us

In recent years our life is becoming better and better. But our environment is becoming worse and worse. Its very bad for our life. Now many people have air-conditioners and cars, they produce (give off ) waste gas. More and more trees are being cut down. There are so much sand on the earth (leaving only sand ) . We often see factories pour waste into rivers or lakes. Water in the river is quite dirty. We havent enough clean water to drink in cities. Now we are in danger. Its very necessary and important to protect the environment well. I think if everyone tries his best to protect the environment, the world will become much more beautiful , and our life will be better and better .

我们周围的污染

近年来我们的生活越来越好。但是，我们的环境越来越糟。它对我们的生活很糟糕。现在很多人都有空调和汽车，他们生产的（出）废气。越来越多的树被砍伐。有那么多的沙子在地球（只留下沙）。我们经常看到工厂把废水倒入河流或湖泊。河里的水很脏。我们没有足够的干净的水的城市。现在我们有危险。这是非常必要和重要的保护好环境。我想，如果每个人都尽自己最大的努力去保护环境，世界将变得更加美丽，我们的生活会越来越好。

喜欢在太阳下山时出走，踩在暖暖阳光下，任微风拂起整齐干净的发丝，轻吻无瑕的脸颊。什么也不想，什么也不必想。仿佛置身于世外的鸟语花香，潺潺流水之中，余晖中的大雁，排着整齐的人字从无际掠过，引出无尽诗意，正如刘禹锡《秋词》中所说：晴空一鹤排云上，便引诗情到碧霄。

大自然的魅力无穷无尽，总是让人感觉若即若离的一种朦胧。所谓的鹰击长空，鱼翔浅底，驼走大漠，虎啸深山，便是大自然的一点极致。江山如娇多娇，引无数英雄竞折腰，这或许便是大自然的另一番风情。曾几何时，大自然的景物被文人用作托物言志、借景抒情的工具，大自然则又披上了一层神秘的感情面纱，与诗人、作家同悲共喜，感时花溅泪，恨别鸟惊心，落霞与孤鹜齐飞，秋水共长天一色，枯藤老树昏鸦，小桥流水人家，古道西风瘦马，夕阳西下,上下五千年，滚滚长江水，华夏一代代炎黄子孙，与大自然和谐相处时，又不断点缀修饰着这位伟大的母亲，这位世界上最漂亮、最温柔、最贤惠的母亲。

Earth Hour started in Australia with millions of homes and businesses turning their lights off for one hour. Now it has grown to become one of the world’s biggest climate change initiatives. People are all joining together in a global effort to show that it’s possible to take action on global warming.

Earth Hour has brought about some new changes to our lives. The iconic Bird’s Nest National Stadium and the nearby Water Cube National Aquatics Center, usually illuminated by floodlights, went dark at 8:30 p.m., while dozens of hotels, office buildings, shopping malls and restaurants also switched some lights off. People join activities such as candle-lit dinners and star-gazing parties as a response to the call for going dark. However, some critics have dismissed the event as simply a gimmick that will not make any difference.

From my point of view, Earth Hour is a global call to action to every individual, every business and every community. A call to stand up, to take responsibility and to get involved in working towards a sustainable future. Earth Hour is a message of hope and a message of action. Everyone can make a difference.

漫步山间小道，最惬意的便是能走在遮风挡雨的参天大树下，静听周围的虫鸣鸟啼。放眼田野，是数不清的相互缠绕点缀的花草树木。脚下的路湮没在幽深的丛林中，延伸至未知的前方渐渐地，融入大自然。只有不需要任何修饰装扮的景色，才是最美的新娘。正如清朝大学者王国维谈的有我之境与无我之境的相互渗透、相互融合。何为有我？何为无我？大自然的默契不是任何矫揉造作的修饰能媲美的，是用任何已知的华丽的言语都不能描摹的。

大漠孤烟直，长河落日圆。大自然的每一点，每一滴，都给人以一种无法超越的和谐的韵味。喜欢在疲惫的时候外出，远离尘世的喧嚣，世事的纷扰，独自享受这江上之清风，山间的明月的寂静。欣赏大自然，给自己一点抚慰。余晖中的大雁，轻轻掠过头顶，朝着太阳升起的方向翱翔。红彤彤的落日，散发着她的余晖，铺洒在纷忙的人群身上，便是一种别致，一种惬意，是你、我、他都拥有的一点灵动。

From June1, 2008, shops and supermarkets are forbidden from offering free plastic bags to customers, according to a new law. A nation-wide campaign against plastic bags has been launched.

Nowadays, Chinese people use up to three billion plastic bags a day. While being very convenient to shoppers, plastic bags also cause serious white pollution” and waste resources.

Though the ban may cause some inconvenience to shoppers, it can help reduce the use of plastic bags when people have to pay for them. Besides, the ban, in away, can promote public awareness of environmental protection.

So I think it necessary to forbid shops and supermarkets from offering free plastic bags. When shopping, we can use cloth bags or baskets instead of plastic bags as we used to.

[余辉中的大雁初中英语环保作文