7年级英语第四单元作文【汇集20篇】

The book is an indispensable part of people, gorky once said: "books are the ladder of human progress."

Book, give me knowledge and give me wisdom, is reading I learned that Huang Detian teacher wrote "mingle" by the book, let me know how a lot of life philosophy.

After I finished reading the book "mingle", I didnt find the book he is our knowledge of an ocean, with books is the most lucky thing, in the "center", I read the contents inside, is he let me understand the center of this a few words to understand, in life, I still is to respect teachers, respect for their parents, their words, we are going to listen to, because they are more knowledgeable than we, therefore, their knowledge, skills, are stronger than we; Because they love us very much, so, they will repeatedly told us that we should never complacent, dont like some people, dont respect teachers in school, no respect for their parents in the home, often with teachers and parents talk back, never go to think about it, is for the sake of his good teachers, parents, will only complain their parents and teachers, teachers and parents are sometimes said to avoid wrong shipment, a review of the wrong you, that also should correct in suitable places, and have to wait for each other to calm down, just to negotiate this matter peacefully, but also by the other party, dont mad at go against them, this will only make them more more anger, only calm, calm to solve the problem, the other has said, jun not smell "dont listen to the old man said, suffer in at the moment."

书是人们不可缺少的一部分，高尔基也曾经说过：“书是人类进步的阶梯。“

书，赋予我知识、赋予我智慧，看书是我了解到黄德甜老师所写的《语重心长》通过这本书，让我懂得了不少的人生哲理。

在我读完《语重心长》这本书后，我才发觉到书他是我们知识的一片海洋，能与书为友是最庆幸的事，在《语重心长》里，我读懂了里面的内容，是他让我明白了语重心长这几个字的理解，在生活中的我，仍然是要懂得尊重师长、尊重父母，他们的话，我们要听，因为他们的见识比我们多，所以，他们的学识、技能也比我们强;因为他们十分关爱我们，所以，他们才会反复叮嘱我们，我们千万不要自以为是，不要像一些人，在校不尊重师长、在家不尊重父母，而经常与师长、父母顶嘴，从不去想想，师长、父母是为了他好，只会心里埋怨自己的父母与师长，难免有时师长、父母是会说错批、评错你，那也要在适合的场所纠正，和必须等对方冷静下来，才和平地去谈判这件事情，而不要在对方还在气头上去顶撞他们，这样只会更加的让他们更怒气，只有心平气和、冷静才能解决问题，古句也有说国，君不闻“不听老人言，吃亏在眼前。”

As we all konw, trees have many uses.With the rapid growth of economy,the

trees has become increasingly important in our daily life.While on the one

hand,trees not only can clean the atmosphere and offer

building,desk,table,papers wood,but also making oxygen.On the other hand,trees

can prevent soil be washed away by heavy rains.In hot summer it give us shade

and make our enviroment more beautiful.So we must plant more trees and protect

forests and prevent people cut down the trees.

一、以形式主语it引导的句型。

句型1. It happened(chanced) that +clause. = sb. happened /chanced sth. = sb. did sth. by chance. 如：

It happened that he was out when I got there. 当我到那儿时，碰巧他不在。

句型2、It seems that sb. do/ be doing/ have done/ had done= Sb. seems to do/ be doing/ have done/ had done 如：(还有动词appear可这样使用)

It seemed that he had been to Beijing before.好象你以去过北京。

二、定语从句：

句型1、由as引导的非限定性的定语从句。如：

As we have known, he is a most good student.众所周知，他是个很好的学生。

句型2、由which引导的非限定性的定语从句。如：

He is a professor, which I have been looking forward to becoming.

他是个教授，那是我一直盼望的职业。(因为先行词professor是表示职业的名词，因此引导词用which，而不用who。(注意：关于which和as之间的比较请看语法的定语从句部分。)

三、让步状语从句

句型1、No matter what / which / who / where / when /

whose+从句，+主句。注意从句中的时态一般情况用一般现在时态。如：

No matter what you do, you must do it well.

四、条件状语从句

句型1、When / So long as / As long as / Once +从句，+主句。(从句也可以放在主句之后。)如：

As long as you give me some money, I will let you go.只要你给我一些钱，我就让你走。

句型2、主句+on condition that+从句。如：

I will go with you on condition that you give me some money.我和你一起去的条件是你给我一些钱。

句型3、主句+unless+从句.(注意：由于unless本身是否定词，所引导的从句的谓语动词用肯定。)如：

I will go there tomorrow unless it rains.我明天去那儿除非下雨。

五、原因状语从句

句型1、主句+in case+从句。(in case表示以免)如：

I will take my raincoat in case it rains.我要把雨衣带上以免下雨。

句型2、主句+due to / because of / owning to / + the fact that +从句。如：

He did not come to school because of the fact that he was

ill.由于他有病了，所以没有来上学。

六、时间状语从句

句型1、When / While / As +从句，+主句。(关于它们之间的区别请看语法。)如：

When I was in the country, I used to carry some water for you.当我在农村时，我常常给你打水。

句型2、主句+after / before +从句. 如：

They hadn’t been married four months before they were

devoiced.他们绘结婚不到四个月就离婚了。

We went home after we had finished the work.我们做完此工作就回家了。

七地点状语从句

句型1、Where +从句，+主句. 如：

Where there is no rain, farming is difficult or impossible.哪里没有雨水，种庄稼是很难的或者是不可能的。

句型2、Anywhere / wherever+从句，+主句. 如：

Anywhere I go, my wife goes too.无论我去哪儿，我的妻子也去哪儿。

八、目的状语从句

句型1、主句+in order that / so that +从句.如：www.yingyuzuowen.cn

I got up early in order that I could catch the first bus.我起得很早，以便能赶上早班车。

九、结果状语从句

句型1、主句+so that+从句. 如：

It was very cold, so that the river froze.天气很冷，因此河水结冰了。

句型2、So+形容词/ 副词+特定动词+主语+…+that+从句.

So interesting is this book that I would like to read it again.这本书那么有趣，我想再读一遍。

十、比较状语从句

句型1、The +形容词比较级……，(主句)the +形容词比较级+……如：

The sooner you do it, the better it will be.越早越好。

句型2、主语+谓语+as +形容词原级+as +被比较的对象. 如：

He is as busy as a bee.他非常忙。

希望以上的初中英语句型可以帮你在写作上解决一个大忙。

When you need a lot of money, you first thing you do is to borrow money from your friend, while doing this sometimes may do harm to your friendship. First, your friends may not have too much money at hand, he or she maybe suffer from the lack of cash flow at that moment. Everyone has their own worries, when you borrow money, they always have to struggle for a while, their hesitations make you begin to doubt your friendship is true or whether your friends treat your as real one. Second, most people cant return the money in time, because they have all kinds of difficulties, this will make your friends in a awkward situation. They are considering whether to ask you return the money, if they do, this will make you embarrassed; If they dont, they will lack of money. So it is better not to borrow money from your friend.

当你需要很多钱的时候，你第一件事做的就是向你朋友借钱，然而这样做有时候会伤害你的友谊。第一，你的朋友也许没有很多的钱在手上，他或她可能遭遇着流动资金的不足。每个人都有他们自己的担忧，当你借钱的时候，他们总要挣扎一会，他们的犹豫让你开始怀疑你们之间的友谊是否真实或者你的朋友是否把你真当朋友。第二，大部分人不能及时还钱，因为他们有各种各样的困难，这会让你朋友出于尴尬的境地。他们考虑着是否叫你还钱，他们叫了，会让你尴尬;如果不叫，他们就缺钱。所以最好不要向你的朋友借钱。

How to Communicate With Ki

As the saying that every family has their issues, the most common issue between families is the communication between parents and children. Most kids would not like to talk about their happiness and sorrow with their parents, they think their parents never really understand them. If the parents want to have nice talk with their kids, they must try to be the kids’ friends.

俗话说，每个家庭都有他们的烦恼，家庭中最普遍的烦恼就是父母和孩子间的沟通。大部分孩子不喜欢和他们的父母谈论他们的幸福和忧伤，他们觉得父母从来没有真正的理解他们。如果家长想要和他们的孩子交流愉快，他们必须尝试成为孩子的朋友。

The problem why the kids would not like to talk things with their parents is that the parents always treat their kids as the small ones, so when the kids want to try something they are interested, the parents’ first reaction is to deny the children’s trying, and tell them to do this is na?ve. As the parents always judge what their kids do with their viewpoint, the children feel frustrated and don’t want to talk to their parents gradually. www.yingyuzuowen.cn

孩子不愿意和他们的父母聊天的问题在于父母总是把他们的孩子当成没长大，因此当孩子想要和他们聊一些感兴趣的话题时，父母的第一反应就是否定孩子的尝试，告诉他们这样做事很幼稚的。由于父母总是用他们的眼光来评判孩子的所作所为，孩子会感到受挫，慢慢不想要和他们的父母交流。

The parents should listen to their kids more, it is better not to give the children judgment right now, to be the kids’ friends will help promote the communication. So when the children tell their plans or interesting things, the parents should just listen to them.

父母应该多聆听孩子的心声，最好不要立刻给孩子下定论，成为孩子的朋友会让他们的交流更好地进行。因此当孩子告诉他们父母他们的计划或者有趣的事情时，父母应该听听孩子的。

There is no doubt that football is the NO.1 sport in the world, though our

football players don’t play it very well, still a lot of fans keep their

enthusiasm on this sport. They watch the matches even staying up. These fans

like to make up a group. They share the same interest and watch the match

together. It is football that brings them together.

The biggest match for football is the World Cup. As it holds every four

years, it is like the biggest event, and the whole world is crazy about it. All

the media are reporting the event and fans from all over the world gather

together, discussing it all the time.

As English is the international language, football is the international

sport. People, no matter poor or rich, can share the same topic as they come

together. People talk about their favorite players and predict the results.

Football is like the silent language, bringing people together. As the most

popular sport, it will attract more fans.

It is a celebrating day. I got in touch with Michael whom I have been losing contact for one year.

It is really magic. I was searching online aimlessly yesterday when an idea struck me suddenly: since Ben can find out my secret by keying in my name in the search engines, why can’t I do so, either?

I intended to find out something about Ben in revenge in the first place, but soon extend my name list to a wider category. It was then that I recalled Michael suddenly.

We have lost contact since our last correspondence in my senior 3. He mentioned to me in his last letter that he was preparing for going to UK to further his education. I, shamefully, was too busy to reply his mail then. When I was recommended to ZJU and won the final freedom, I thought he had already been in UK so I had no idea where to write him.

I used to think that we would never meet again. However, when I browsed the entries about him, I found out excitedly that he is still in P.R.C.!!

Without a moment hesitation, I ran upstairs to my dorm and found out my old address book. Thank goodness, his home no was still there.

After 3 times calling with no answer replies, I eventually got him on the phone. He was more surprised than I could imagine that when I asked for his hp no he was too nervous to remember it. :P Hehe.

Life is enjoyable in moments such like this. Old friends meet again surprisingly, on a road of their own ways to their dreams. they look at the face of each other, and recognize the old pal. It is such moment that makes me feel grateful to life: whenever I set off for a new destination, I see I have friends in the same direction, with whom I won’t feel alone any more.

One day Mon said to me I love you. son

I was very happy that day and went to school.

6 oclock in the afternoon, i went back home.Dad was also back and there was a big cake on the table.

I asked him why there is a cake? can i eat it?

Dad answered No.Mom should eat first.

why?I asked again.

because its your moms birthday

then i remembered mom said i love you to me in the morning.

it was moms birthday,but i didnt know that.

and she said i love youto me.

A hobby can be almost anything a person likes to do in his spare time. Hobbyists raise pets, build model ships, weave bas-kets, or carve soap figures and so on. In a word, hobbies offer en-joyment, friendship, knowledge and relaxation.

Then, what is my hobby? Well, what I like most is singing. I began to sing songs when I was very young. My uncle was studying in a college then, so he could sing lots of songs, and he taught me several songs. I showed great interests in the music then, for they were pleasing to ears and easy to sing. My uncle told me they were called pop songs.

When I grew up, my music teacher found that I had a good voice, so she sent me to the Childrens Palace to study vocal mu-sic. From then on, I began my vocal music training. And then I knew there were several kinds of songs, like folk songs, pop songs and so on. What I had learned most was the songs for children. They were all simple ones but our teacher trained us very strictly. We practiced how to produce sound and how to make our expres-sion more natural and more pleasing. Those simple training didnt reduce my interest in singing at all and I won awards one after another in several kinds of competition. Actually I began to make up a dream of becoming a famous singer in the future.

As time went by, I came to realize that my dream wouldnt come true for there were strict conditions of being a singer. But I still took singing as my hobby since I found in music the interests which were lost in the exams. When I put all my emotion into singing a song, it gave me very good and very pleasant feelings, and a good chance to relax. Besides, it was a good way to learn things that couldnt be easily found in life.

Now as Im saying goodbye to my childhood my voice has changed into a deep male voice, and therefore I can sing a lot of songs written for adults. I am often deeply moved, by the melody or by what the song.

Last year’s Spring Festival is special. My uncle and my aunt came back from Shanghai. My family were very happy to keep the Spring Festival with them. And it was the most exciting festival of all the festivals.

On New Year’s Eve, my father and my uncle talked about their work together. My mum did some cooking with my aunt Grandparents and I watched the New Year TV programmes. At about six o’clock, we had a special family dinner. We all thought the dumplings were delicious.

On the first day of the New Year, we visited our relatives. In the afternoon, we went shopping in Jiefanf Road. My uncle bought some Jay’s CDs. He likes Jay’s music very much. There were so many people on the road. It was more alive than any other time of a year.

On the second and the third days, we spent a wonderful weekend in the country. There were much bigger trees than in the city. And the animals were more beautiful than in the city. We all enjoyed ourselves.

I had an interesting Spring Festival. How about you?

People native to urban Beijing speak the Beijing dialect, which belongs to

the Mandarin subdivision of spoken Chinese. Beijing dialect is the basis for

Standard Mandarin, the language used in the Peoples Republic of China, the

Republic of China on Taiwan, and Singapore. Rural areas of Beijing Municipality

have their own dialects akin to those of Hebei province, which surrounds Beijing

Municipality.

Beijing Opera, or Peking Opera (Jingju), is well-known throughout the

national capital. Commonly lauded as one of the highest achievements of Chinese

culture, Beijing Opera is performed through a combination of song, spoken

dialogue, and codified action sequences, such as gestures, movement, fighting

and acrobatics. Much of Beijing Opera is carried out in an archaic stage dialect

quite different from modern Standard Mandarin and from the Beijing dialect; this

makes the dialogue somewhat hard to understand, and the problem is compounded if

one is not familiar with Chinese. As a result, modern theaters often have

electronic titles in Chinese and English.

A hutong in eastern Beijing near Dongsishitiao. In this March 2003 photo

the left side was still standing, but it has since given way to new

construction.The Siheyuan is a traditional architectural style of Beijing. A

siheyuan consists of a square housing compound, with rooms enclosing a central

courtyard. This courtyard often contains a pomegranate or other type of tree, as

well as potted flowers or a fish tank. Siheyuans line Hutongs , or alleys, which

connect the interior of Beijings old city. They are usually straight and run

east-to-west so that doorways can face north and south for Feng Shui reasons.

They vary in width — some are very narrow, enough for only a few pedestrians to

pass through at a time.

Once ubiquitous in Beijing, siheyuans and hutongs are now rapidly

disappearing, as entire city blocks of hutongs are leveled and replaced with

high-rise buildings. Residents of the hutongs are entitled to apartments in the

new buildings of at least the same size as their former residences. Many

complain, however, that the traditional sense of community and street life of

the hutongs cannot be replaced. Some particularly historic or picturesque

hutongs are being preserved and restored by the government, especially for the

2008 Olympics. One such example can be seen at Nanchizi.

Mandarin cuisine is the local style of cooking in Beijing. Peking Roast

Duck is perhaps the most well-known dish. The Manhan Quanxi ("Manchu-Han Chinese

full banquet") is a traditional banquet originally intended for the

ethnic-Manchu emperors of the Qing Dynasty; it remains very prestigious and

expensive.

Teahouses are also common in Beijing. Chinese tea comes in many varieties

and some rather expensive types of Chinese tea are said to cure an ailing body

extraordinarily well.

The Jingtailan is a cloisonné metalworking technique and tradition

originating from Beijing, and one of the most revered traditional crafts in

China. Beijing lacquerware is well known for the patterns and images carved into

its surface.

The Fuling Jiabing is a traditional Beijing snack food, a pancake (bing)

resembling a flat disk with filling, made from fu ling (Poria cocos (Schw.)

Wolf, or "tuckahoe"), an ingredient common in traditional Chinese medicine.

Gorky said: "Books are the ladder of human progress!" It is obvious how

important reading is! Reading books allows us to learn a wealth of knowledge,

but also make people progress.

Usually we should read more books, and we must read good books, such as:

science fiction, composition, fairy tales, fables, myths and other useful.

Meaningful book. However, for books like comics, it is best to read less.

"Reading through thousands of books, writing pens is like a god." I think

that reading more is good for writing. When reading, you should accumulate some

good words and good sentences, and then copy them on your notebook. Learn more

about other peoples writing skills. Content, so that when writing, the

accumulated and learned things can come in handy!

Books are our good friends; books are also our good teachers; none of us

leave anyone, book this intimate teacher, this competent teacher!

Summer vacation has arrived, and it is a happy holiday, but do you have a

plan for your summer vacation? Although the summer vacation can relax, but you

cant put myself too loose, but to continue to work hard for next semester!.

What can we do for ourselves during the summer vacation? There are lots and

lots. Much like stars countless, for example: in the summer school program

enrollment, swimming lessons, and family to go out to play with my classmates,

riding a bicycle to go for a ride...... Etc..

In the summer school program can add new knowledge, can also review the way

before the content of homework; swimming can enhance their ability of self-help,

also can cultivate interest, so he will not feel bored; and the family out can

choose to visit the places of historic interest and scenic beauty but also to

the scenic area, to enjoy the wonders of nature, which not only can to broaden

their horizons, also can make their own eye-opening; with the students about

riding together together, talk together, let oneself not sitting at home playing

computer, addicted to electronic games, can also make their own troubles to the

winds!

If I had words, I would have chosen to go all the way, because I thought it

was very meaningful and liked, and it would not be annoying.

Liu Kai is my classmate. He is a good student and always ready to help others.

One day on his way to school，he saw a little girl crossing the road. A car was coming towards her quickly and the girl was too frightened to move. The car nearly hit her. Just then LiuKai rushed up to her and caught her by the arm. The little girl was saved. She told him where she lived，and he took her home. When LiuKai hurried into the classroom，the teacher had already begun his lesson. He told the teacher why he was late. He was then praised for what he had done.

Often times it just seems like something too far out of reach.Nothing in

the word is difficult for one who sets his mind to it.Everyone wishes to be

successful in life.

In my eyes, opportunity is a part of success. Many great people found great

things by chance. It is true some successes can be won because of unexpected

help and findings.

Opportunities don’t come often.They come quietly and often go by without

being noticed.

In fact, many opportunities have been lost on the wan to success. so , it

is necessary that we should treat opportunities with care. An opportunity just

brings a promise but never realizes it on its own. Only by working hard, making

great efforts and getting prepared, wil we catch the coming opportunity get to

our goal.

Different poople have different views on success. Some hold that making a

great deal of money means success. Others argue that holding an important post

in the government means success. Still others believe that having a high

academic title at a famous university or a research institute means success.

In my opinion, success means brilliant achievement in our work. In other

words, no matter what we do, making outstanding contributions to the development

of our country and bringing help and happiness to others is success.

To achieve success, we should ,first of all, have a clear long-term goal in

our life. Second ,we be both perseverant and hardworking. Whatever we do, there

are always two possibilities: success and failure. We should never lose heart

when we come across difficulties or when we are confronted with failure.

Instead, we should learn from our experience, build up our confidence and work

even harder and smarter towards our purpose. Third ,we should follow the

examples of those who are successful and learn from them. Finally ,we should try

to get along well with our classmates and colleagues. We should care each other

and help each other in our study, our work and our life, because work is of

great importance in the realization of our dream.

If we can follow these principles, we will certainly achieve remarkable

success in our life.

We all know that it is not easy to find a suitable work in the present society. But at the same time, more and more companies say the phenomenon of the brain drain is very serious. I think both the employee and employer should take the responsibility. But employer should take the most duty. If the company can offer a considerable welfare, there will be less staff leave their position. In general, most employees change their jobs just because they think their payment doesn’t equal to their benefit. If the employer can meet the need of their staffs, the brain drain will not be a question. By the way, the employee also should think again and again when hunting jobs to make sure finding his dream job. Then he would not regret after a few days. If both employee and employer do their best, there will be less and less brain drain.

我们都知道在当今这个社会的要找到一份合适的工作并不容易。但是，与此同时，越来越多的公司指出人才流失这个现象的严重性。我认为这应该是雇员和雇主都该承担的责任。不过雇主应承担大部分责任。如果公司可以提供相当可观的福利，很少会有员工要离开的。一般来说，大多数员工换工作都是因为他们认为他们的付出与收获不成正比。如果雇主能够满足员工的需要，人才流失将不会是一个问题。顺便说一下，在找工作的时候员工也应该三思而后行，确保可以找到自己想要的工作。这样就不会一段时间后就后悔了。如果雇主和雇员都做到最好，人才流失会越来越少。

Today is the National Day holiday for the fourth day, time can be really

fast. My mother took me to my grandmothers home for the first two days, and the

home of my grandmother was really busy. A lot of Grandpa and grandma, aunt,

uncle and brother, sisters, I almost fainted, that is to recognize the halo, ha

ha ha ha. My mother told me that I was the fifth generation. This is called the

fifth world. Each holiday to see grandma, Grandpa too too, they are wearing

special festive costume, really good-looking.

The morning I was at home to review the homework, mother was glad to praise

my mamas boy. So in the afternoon to take me to the Tang Dynasty city people

here to play, really much ah! The atmosphere of a festival on the square is

happy. The development of the game we went to the west city play scouts, there

are a lot of kids, because I was the first time to play, so start from the

simple to play for a while, I was familiar with the essentials, but also know a

lot of new friends. Mom said this is the fun of games. In the process, you will

make up for the shortage, accept good suggestions, and recognize new friends.

Its important to exercise our willpower. Only by persisting efforts can we get

to the end. Next time I will come here. I want to play the game that is more

difficult. I believe I can go smoothly. I cheer for myself: Liu Zhuoya, you are

the best.

I had a good day today, and I hope it can be like this every day.

I enjoy singing very much. While singing, my heart as well as my body is joyful. When Im happy, I often sing out to share my happiness with others. I also sing out to pour out my bad feelings when Im upset.

我很喜欢唱歌。唱歌的时候，我的心以及我的身体都是快乐的。我高兴的时候，我常常唱出来与大家分享我的快乐。我难过的时候，我也唱出了我不好的心情来倾诉。

I like pop music most, because I want to follow the trend. I prefer soft music to rock music. Since we may be very tired after a long days work, we need a rest very much. Perhaps soft music is the best recreation for us. My favorite pop stars are JJ and Jay Chou. They always make a wonderful performance on the stage. Their songs are so charming. I admire them very much.

我喜欢流行音乐，因为我想跟随潮流。相对摇滚乐来说我更喜欢轻柔的音乐。因为经过漫长的一天工作后我们可能会很累，非常需要休息。也许柔和的音乐对我们是最好的娱乐。我最喜欢的明星是林俊杰和周杰伦。他们在舞台上的表演总是很精彩。他们的歌曲是如此的令人着迷。我很佩服他们。

In my spare time, I often sing a song to others. Everyone is so happy to be my listener, because Im very brave and confident. Even though I couldnt be a professional singer, I can still get a lot of good fun from singing. Because of singing, my life becomes more colorful.

在我的空余时间里，我经常为别人唱歌。每个人都很开心的做我的听众，因为我很勇敢和自信。即使我不能成为一名专业歌手，我还是可以从唱歌中得到很多乐趣。因为唱歌，我的生活变得更加丰富多彩。

Smile, how warm the word is! it can make anyone happy. and this happiness is from the bottom of heart.

It’s not like enthusiastic laughter, but just warm, makes your heart warm.

Mother’s smile is like a spring wind, so gentle when you are sad, it can make you happy again; when you fail, it can make you stand up and work hard again; when you give up, it can make you try your best again…

Smile, so easy, but also so useful.

So, let’s learn to smile. everyone needs others’ smile. when we give others a smile, we will feel happy, too. and maybe next time, when you need a smile, the person who received your smile will give it to you.

Let’s learn to smile often, i believe it can even make the whole warm. living with a smile, every day will be sunshine.

Someone asks me what on earthHappinessmeans? I cant give you the exact definition of it, but Im sure if you love and help others, youll get it..

Ill never forget an old lady. She lives in a small house alone. Its said that her husband and her son died in a traffic accident. How bitter her life is!But the old lady often helps others with a smile. Whenever it snows, she is always the first to clean the paths. She looks after several children living nearby. I am one of them. I often remember the stories she told us and her kind smile. Perhaps she is unlucky, but I think she is a happy person. Her life is full of laughter and love.

But Im sad to see some people getting their happiness in bad ways.They speak loudly in cinemas and meeting rooms; they destroy trees to enjoy themselves and they laugh at others shortcomings. Perhaps they feel happy at that time, but they will never get true happiness because they have lost their personality.

Now I know what happiness is. It means kindness, love and unselfishness. Above all, only bringing happiness to others can make you yourself get it.

Smoke has something for people in poor health, nicotine.

Nicotine in a cigarette can kill a mouse, 25 g of nicotine in cigarettes can kill a few cows, 40 to 60 mg of pure nicotine can kill a person.

The dangers of nicotine is also quite big, it can cause stomach or other stomach disease; Also can make the person causes heart disease cause rhythm of the heart is not straight; The outbreak of serious still can cause cancer.

Cigarettes are hidden in the invisible killer, around us are all should be vigilant.

According to scientists, the chemical composition of tobacco contains hundreds of complex, most harmful to human body, including tar, nicotine, phenols, alcohols, acids, aldehyde is 40 kinds of toxic and carcinogenic substance. Smoke after the fire, smoke, contains the chemical composition of tobacco in all, at the same time than the tobacco itself and added some harmful substances, such as carbon monoxide, tobacco tar and so on. This is because in addition to the tobacco itself, in the process of cigarette made, to add some cocoa in raw materials, liquorice, sugar, glycerin, such as ethylene glycol, moist, taste fragrance and combustion-supporting material. Although these additive itself is harmless, but changed in the process of combustion. For example, in the back of the rat with cocoa after burning smoke oil, can grow skin tumor. Glycyrrhizic acid in glycyrrhiza after burning, with other ingredients, can generate have carcinogenic polycyclic aromatic hydrocarbons. Sugar increased after combustion with tobacco tar, and the product of sugar after combustion is an important carcinogens in tobacco. Glycerin and glycol after the burning of the material, not only can make smokers bladder cancer, and the acrolein inhibits the trachea and cilia secretion from the lungs, thereby increase the chances of suffering from bronchitis and emphysema, and make people with both became seriously ill.

Smoke harm to people is how great! So we cant smoke. Stop smoking, the benefit of future generations.

烟里有一种对人身体不好的东西——尼古丁。

一枝香烟中的尼古丁可以毒死一只小白鼠，25g的香烟里的尼古丁可 毒死几头牛，40至60毫克纯尼古丁可以毒死一个人。

尼古丁的危害也是相当的大，它可以引起胃痛或其它胃病;还会使人引起心律不正诱发心脏病;严重的还可能引起癌症的爆发。

香烟是隐藏在我们身边的隐形杀手，是大家所应警惕的。

据科学家测定，烟草中含有数百种复杂的化学成分，大部分对人体有害，其中焦油、尼古丁、酚类、醇类、酸类、醛类等40种是有毒和有致癌作用的物质。烟在点燃后，所产生的烟雾，包含了烟草中所有的化学成分，同时比烟草本身又增加了一些有害物质，如一氧化碳和烟焦油等。这是因为除烟草本身外，在制成卷烟的过程中，要在原料中加入一些可可、甘草、糖、甘油、乙二醇等调味、湿润、产香、助燃物质。这些添加剂虽然本身无害，但在燃烧过程中却起了变化。例如，在鼠背涂上可可燃烧后产生的烟油，可长出皮肤瘤。甘草中的甘草酸在燃烧后，与其他成分化合，可生成有致癌作用的多环芳烃。糖与烟草一起燃烧后增加了焦油量，而糖燃烧后的产物是烟中的一个重要致癌物。甘油和乙二醇在燃烧后的物质，不但可能使吸烟者患膀胱癌，而且所产生的丙烯醛可抑制气管和纤毛分泌物从肺内排出，从而增加患气管炎和肺气肿的机会，并使患有这两种病的人病情加重。

烟对人的危害是多么大啊!所以我们不能吸烟。杜绝吸烟，造福后人。