写一篇二年级英语【经典20篇】

My favorite star isSangLan. She is one of the best gymnasts in our country and she is very beautiful. Her smile like sunshine makes everyone happy.

Unluckily she was hurt badly in a contest. Since then she hasnt stood up. But she faces the fact bravely and overcomes all kinds of difficulties.

Now she is studying hard in Beijing University. She wants to do some useful things for our country after graduation. Her spirit encourages many people.

我热爱地球，热爱我们赖以生存的家园。爱她的青山绿水，爱她的碧草蓝天……

I love the earth, love for our homeland. Love her beautiful country scene, love her green to the sky......

在四野飘香的花丛中，我和蝶儿一起嬉戏、欢笑;在郁郁葱葱的森林里，我与小鸟一起追逐、歌唱;清晨，我迈着轻盈的步履去原野上踏青，雾霭缭绕着、白纱般的柔柔地漂浮在空中。吮吸着花草的芳香， 欣享着阳光的沐浴，我被陶醉在这如痴如醉的梦幻里;夜晚，我坐在稻谷飘香的农家小院里，仰望着璀璨的星空，聆听着蝉鸣嘹响，蛙声如潮，仿佛置身于一个童话般的王国。

In the fields the fragrance of flowers, butterflies, and I play together in laughter; a wild profusion of vegetation in the forest, I chase, with birds singing; early in the morning, I walked with light steps to the fields on the outing, mist shrouded with white veil, gently floating in the air. At the scent of flowers and plants, we enjoy the sun bath, I was intoxicated in the dream of the night, delude one to folly; I sat in the fragrance of rice farmers in a small courtyard, looking up at the bright sky, listening to the sound of cicadas Liao ring, frog sound waves, like being in a fairy tale kingdom.

多么好的环境啊!怎能容许被破坏呢?

Very good environment! That would allow the destroyed?

人类的高科技，大排放，无止地开采……恐龙因环境而灭绝，而人类却要把自己毁灭掉吗?

The high-tech, high emissions, the endless exploitation...... The dinosaur extinction due to the environment, human have to destroy ourselves?

保护环境与维护生态平衡的历史重任要落到我们跨世纪一代的肩上。让我们都来关爱自然，热爱地球吧，手挽手、肩并肩、心连心地铸起一道绿色环保的大堤，捍卫资源、捍卫环境、捍卫地球、捍卫我们美好的家园吧!

The historical responsibility Protect environment and maintaining ecological balance to fall on our cross century generation shoulder. Let us all come to love nature, love the earth, hand in hand, shoulder to shoulder, heart to heart to set up a green dam, defend, defend, defend the earth resources and environment, protect our beautiful homeland!

My holiday， do not have some fun.

During the holidays， I can do a lot of things， for example， watch TV， playing to the students home， homework， read a book， anyway， to do what they want to， take ones ease， good ah!

In the holidays， I can do they like to do things， as for me， I like to watch TV， look at it for hours， I also like to play computer games， as long as no adults at home， they can with the desire for.

In the holidays， can also not be learning problems， can be properly self-cultivation heart， express the yearning for a better future， how good ah!

My holiday do lots of things， these things make us love life more， in fact， at home on holiday， relaxing， this is not a good thing? What is there against it? What a lovely holiday ah?

Holiday， each child is longing for the day， not only can do what I want， and also my classmates to play， so free!

You like to join?

In general， the holiday is every child s idea of heaven， everyone would want to holiday to come， like a holiday!!

【译文】

我的假期，没有一些乐趣。

在假期里，我可以做很多的事情，例如，看电视，玩学生回家，作业，读一本书，不管怎样，做他们想做的事情，以舒适，好啊!

在假期，我可以做他们喜欢做的事情，至于我，我喜欢看电视，看几个小时，我也喜欢玩电脑游戏，只要没有大人在家，他们可以与渴望。

在假期，也可以不学习问题，可以适当的修养的心，表达了渴望一个更好的未来，多好啊!

我的假期做很多的事情，这些事情让我们更爱生活，事实上，在家里度假，放松，这不是件好事吗?有什么对吗?什么可爱的节日呀?

假期，每个孩子都渴望一天，不但能做我想做的事情，和我的同学玩，那么自由!

你想加入吗?

一般来说，这个节日是每一个孩子的天堂，每个人都想要假期，喜欢度假! !

There is a song ‘Tomorrow Will be Better’, I like to hear it so much, every time when I listen to it, I can feel the hope, even though I don’t feel happy, I will be positive to life. We will meet all kinds of difficulties, if we can hold on and keep move on, all the hard time will pass, the bright future will come sooner or later.

有一首歌叫《明天会更好》，我很喜欢听，每次当我听到这首歌的时候，我能感受到希望，即使我不开心，但是也会乐观对待生活。我们会遇到各种各样的困难，如果我们能挺住并向前进，所有的艰难时刻都终将会过去，美好的明天迟早会来到。

When I walk on the street, I found most people don’t obey the traffic rules, they just ignore the rules, when there are a lot of people go across the street, they just follow them. It is so dangerous, the accident is very easy to happen, the car will hit the people any time. For the safety, we should obey the traffic rules.

当我走在街上的时候，我发现很多人不遵守交通规则，他们忽视规则，当很多人过马路的时候，他们跟着人群。这是很危险的，很容易发生意外，车子会随时撞到人。出于安全问题，我们应该遵守交通规则。

This is our house.It`s nice and big!It`s a warm world. All family are live in it. Ha!This is my parents`room.It`s big.My father is sit on the this chair.My mother is sleep on this bed. This is my room.It`s big,too.It`s name`s "Ann park" beacause it`s very lovely and interisting.This is my desk.Everyday I do homework here.This is my bed.It`s pink beacause pink is my favourite couler. This is our sitting room.It`s tidy.It has a table,four chairs,a TV,a mat and a flower.We often sing songs here and watch TV here.

This is our book room.It`s big but small than the sitting room.It has many many wonderful books.We are read books and newspapers here. This is our bathroom .It`s big.We take baths,wash faces and brush teeth here.Our house!Our warm world!I love U!

A Warm-hearted Man

一个热心肠的人

One afternoon an old woman was crossing the street with a basket in her hand. she was going to do some shopping.

Just then a car ran up fast and she was knocked down. One of her legs was hurt and she couldnt move any more. A kind cleaner saw whis and rushed to her at once. He helped her stand up and took her to the nearest hospital. What a warm-hearted man he was!

【参考翻译】

一天下午，一位老太太过马路时与一篮子在她的手。她要去买一些东西。

就在这时，一辆车跑起来很快，她被撞倒。她的一个腿受伤了，她不能动弹了。一种更清洁的看到尾缀，冲到她一次。他帮她站起来，把她带到最近的医院。他就是这个热心肠的人!

With the development of the modern technology，private car is no longer a luxurious thing for ordinary people，more and more people drive to work instead of going by bus. The popularization of private car has many advantages.First， it is very convenient and time-saving ，you can drive your own car to the workplace instead of waiting for the crowded bus and afraid of being late for working.Second，it can also improve the traffic structure，and help to mitigate the stress of the traffic.Third， the popularization of private car can help to promote the car industry and any other interrelated industries. I believe that in the future the private car will become the most important vehicle and we cannt live without it.

This afternoon, my parents and I went to Huad Shan with their friends.Recently, they have developed a new feature such as Gu Keng coffee, yard coffee shop, and B&B.This time, we went to a place that has natural trees, flowers around us. On the side of the stone road, had a long river and we could hear the water voice. It was very comfortable. The most I like it because there were not many people so that we could have a quiet condition.In addition, adults took noodles, fruits, and teas to get more interest. People in there were so friendly; they could lend us the desk, the chair, and everything we need.Now, Huad Shan is not only a place for hiking but also a tourism scenic spot. We can go there with our family or friends on holiday. It is certainly can relax ourselves.There are full of busy and nervous feeling in our usual life. So we took advantage of free time to go for relax. It is really a big enjoyment

[a trip to Huad Shann高二年级英语日记

每年农历五月初五为端午节，你们知道它的来历吗?让我给你们讲一讲。

Every May in Chinese lunar calendar is Dragon Boat Festival, you know the background of it? Let me speak for you.

从前，有一个爱国诗人屈原，有一次，他进京去办事，看到国家变的非常衰败，就投汩罗江自杀了。临死前，他还写了一首诗。人们为了纪念这个爱国诗人，就把每年的农历五月初设成端午节。

Once upon a time, there was a patriotic poet Qu Yuan, once, he went to work in Beijing, see a failed state change, will vote Miluo River Dutch act. Before he died, he wrote a poem. People in order to commemorate the patriotic poet, the annual Lunar New Year in May at the beginning of a dragon boat festival.

端午节主要内容就是划龙舟、包粽子。

The main contents of the Dragon Boat Festival is the dragon boat racing, zongzi.

赛龙舟的场面很热闹，河岸边被挤的水泄不通。只听枪声一响，船上的人拼命的向前划，而河岸边满是加油声。

Dragon boat racing scene is very lively, crowded shore. Just listen to the sound of gunfire, paddled boat people desperately, but the river is full of cheering.

包粽子，就是用竹叶包，用糯米作馅。包的时候很粘手，不是专业人员可是包不好的哦!

Rice dumplings wrapped in bamboo leaves, is for filling, with glutinous rice. When the package is very sticky, not professionals, but the package is not good!

在端午节，人们还要把房子打扫干净，在厨房里洒上雄黄水，用来杀死毒虫孳生。

During the Dragon Boat Festival, people will have the house clean, sprinkle realgar water in the kitchen, used to kill insect breeding.

相传龙舟竞赛是为了打捞投汩罗江而死的爱国诗人屈原。把粽子投进河里，是让鱼虾蟹吃饱了，不再去吃屈原的遗体。

According to legend, the dragon boat race is to salvage the Miluo River to die of the patriotic poet Qu Yuan. Threw rice dumplings into the river, is to let the fish and shrimp to eat, not eat Qu Yuans body.

在这个寒冷的星期，英语节在同学们的期盼下如期而至。

这周一，我们举行了盛大的开幕式，主要内容有教低年级的小朋友学英语、看英语话剧和学唱英语歌曲等等。

教二（1）班的一个同学学英语，我认为这个环节最有意义。教二（1）班的小朋友学英语不是一件容易的事。我们排着整齐的队伍来到操场上，学校的两个英语老师主持这次英语节的开幕式。接着，老师宣布：“开始教小朋友学英语。”我们就兴致勃勃地走向对面的那个小朋友。我教她的英语是“He’stallandstrong。”首先我给她读了一遍英文，并耐心地告诉她中文是：“他又高又壮。”我的话音刚落，小朋友就有模有样地学了起来，听上去讲得还不错。不一会儿，老师定的五分钟到了，在这五分钟内，我很认真地教她，她也很努力地学。我让她把自己的名字写在横线上。

英语节不仅让我学到了知识，还让我认识了一个新朋友。英语节在我们的欢声笑语中圆满结束了。

Now, patches of forest became less factories. Endless grassland into desert, limpid streams into a muddy gutter, beautiful grassland into a barren desert. Why? Why is this? This is because people caused by deforestation.

The earth is home to the survival of people, and the human is continues to destroy it, people cut trees have purify air, reduce noise and adjust the temperature, and other functions; Being pulled out of the grass and people to remove the flowers to beautify the environment. You imagine, if it were not for the plant, our living environment?

These days, many wild animals has become the plate of food, fine furniture, gorgeous dress. You think about these wild animals to buy me a life brought a lot of fun, without these lovely animals, our life will become special boring. Rose up in the morning, cant hear the birds chirping and crisp sound, cant see the kitten doggie smile to you, can only see the strange and hard faces, that is bad!

Let us join hands together to create a beautiful home! Let us see the mountains again, flowers everywhere, singing birds, vibrant scene! Let our life more beautiful environment, more interesting. Let the flower and grass fragrance our lives "to protect the environment, everyone duty", believe in the near future will be a new world, we create a beautiful earth. Everyone must do "protect the environment, everyone duty."

现在，片片森林变成了座座工厂。一望无际的草地变成了荒原，清澈的小溪变成了浑浊的臭水沟，美丽的草原变成了贫瘠的沙漠。为什?这究竟是为什么?这是因为人们乱砍乱伐造成的。

地球是人们赖以生存的家园，而人类却在不断的破坏它，被人们砍伐掉的树有着净化空气，减小噪音，调节气温等功能;被人们拔掉的小草和被人们摘掉的鲜花能美化环境。大家想象一下，如果没有这些植物，我们生活的环境会怎样?

如今，许多野生动物成为了人们盘中的美食，精致的家具，华丽的服饰。大家想一想这些野生动物给我买的生活带来了许多的乐趣，如果没有这些可爱的动物，我们的生活就会变得特别无趣。早晨起来，不能听到小鸟叽叽喳喳清脆的叫声，不能看到小猫小狗向你微笑，只能看到一张张陌生而生硬的面孔，那多不好啊!

让大家携起手来，共同创造这美丽的家园吧!让我们重新看到青山绿水，鲜花遍地，百鸟欢歌，生机勃勃的场面吧!让我们的生活的环境更加美好，更加有趣。让鲜花和小草芳香我们的生活“保护环境，人人有责”，相信不久的将来地球将被我们创建成美丽的新天地。大家一定要做到“保护环境，人人有责。”

The so-called food safety, is the food does not contain any harmful substances to human body. If food spoilage or containing toxic substances, will bring harm to our body and even life-threatening. Food safety is about peoples life and health. Inferior food greatly endanger peoples health, light diarrhea diarrhea, or poisoning coma, moreover may cause death. Indeed, food safety is directly related with the health and quality of life of the masses. Schools around there are many small shops, the inviting "gourmet" from the fragrance, the classmates to withstand the snack temptation, you, me one yuan to buy a lot of snacks, the results some buy snacks classmates because bought not health food and have loose bowels.

Remember once I saw a news on TV: a famous yogurt brand for some reason, the expired yogurt repackage again, also good food quality supervision administration found in time, otherwise the consequence is unimaginable. Look at these factories, how hard, in order to market competition, regardless of the health of consumers.

The above examples are enough to prove that the importance of food safety, food unsafe events caused great influence to peoples life, food regulators have also been attaches great importance to this problem. Believe that relevant departments can seriously, strict management, give you a rest assured food environment. We, as a primary school student, as a member of a society, we should also be constantly improve the self-protection ability and the ego to protect consciousness, render and do our work with regulators.

所谓食品安全，就是食品里不含任何对人体有害物质。如果食品变质或者含有毒物质，就会给我们身体带来危害甚至危及生命。食品安全关乎人的生命健康。劣质食品极大得危害了人的健康，轻则拉肚子腹泻，重则中毒昏迷，更有甚者可能会引起死亡。的确，食品安全直接关系着群众的身体健康和生活质量。学校周边有许多小店，那诱人的“美食“发出阵阵香味，同学们抵挡不住零食的诱惑，你五角，我一元地买了许多零食，结果有些买零食的同学都因为买了不卫生的食品而拉肚子。

记得有一次我在电视里看到了一个新闻:某一知名酸奶品牌因为某种原因，把过期的酸奶重新包装了一遍，还好食品质量监督管理局及时发现，不然后果不堪设想。看看这些厂家，多么毒辣，为了市场上的竞争，竟不顾消费者的健康。

以上事例都足以证明食品安全的重要性，食品不安全的事件给人们的生活造成了很大的影响，食品监管部门也一直很重视这个问题。相信有关部门能够严肃处理，严格管理，给大家一个放心的食品食用环境。而我们作为一名小学生，作为社会的一份子，我们也应该要不断提高自我保护能力和自我保护意识，以及尽自己的绵薄之力配合监管部门工作。

our country has a large area of forest. however,not until recently did the goverment begin to realize the importance of protecting the forest. as we may know from various sources,the government recently adopted a policy called "restore the farmland to the forest"。this has brought much hope to the forest of our country as well as the sustainable development of our country.

我们人类生活在地球上，地球上有许多东西需要我们保护，但是我们却没有在意。

We live on the earth, the earth there are many things we need protection, but we didnt care.

有些人不珍惜地球赐予我们的一切，例如人们乱砍乱伐，大量使用一次性筷子和乱扔塑料袋，制造白色垃圾等已经给大自然带来了许多环境问题，严重影响了我们的生活。还有大气污染，酸雨和臭氧层等带来的危害都是大自然给人类带来的灾害，人们乱砍乱伐，乱扔塑料袋和使用一次性筷子等，这些就是人们不尊重大自然而造成的，没有自然，便没有人类。这是世界一大朴素的真理，人们只会一味的抢夺自然，征服自然，只会破坏生态系统，咎由自取，使人类濒于困境。切记，保护环境就等于保护我们自己生存的环境。

Some people do not cherish the earth gives us all, for example, people cut down many trees, the extensive use of disposable chopsticks and throw plastic bags, producing white garbage has to nature brought many environmental problems, a serious impact on our lives. There are air pollution, acid rain and the ozone layer damage caused is human nature to bring disaster, people cut down many trees, throw plastic bags and disposable chopsticks, which is that people do not respect the nature and cause, no nature, no human beings. This is a big world, plain truth, people just blindly grab the nature, conquer nature, will only bring trouble to oneself, the destruction of the ecological system, humans dilemma. Remember, Protect environment is to protect our own living environment.

我们要保护这个脆弱的的地球，不要让茂密的森林，辽阔的草原和无边无际的海洋成为我们的回忆。

We want to protect this fragile earth, dont let the dense forests, vast grasslands and boundless ocean has become our memories.

现在起，我们应该保护环境，一起捍卫我们的家园。

Now, we should Protect environment, to defend our homeland.

大家好!我叫***，在师范附属小学四年一班上学，今年十岁了。我个子不高，眼睛小了点儿，不过很有神，别人都夸我眉毛长得好看，黑黑的，弯弯的，确实给我的脸蛋增添了几分色彩。对了，我还长着一张小小的嘴，这要是女孩子，就用樱桃小嘴来形容就再恰当不过了。

Everybody is good! My name is * * *, in the normal affiliated elementary school four years class at school, ten years old this year. Im not tall, eyes a bit small, but very God, others Doukua good-looking my eyebrows, dark, crooked, do give me face adds a touch of color. Right, I also had a small mouth, if this girl, with cherry small mouth to describe more appropriate.

我的爱好有很多。打羽毛球、踢足球、跑步……一跑起不来就不想停，直到跑得汗流浃背才肯停下，因为长期这样练习，所以我是一个很出色的长跑运动员。

I have many hobbies. Playing badminton, football, running...... A run up and dont want to stop, until the sweat ran to stop, because of the long-term practice, so I am a very good runner.

我还喜欢读书。我读过《十万个为什么》、《少年大世界》、《小学生优秀作文》等等，从这些书中，我学到了很多知识，也懂得了很多道理。

I also like reading. I have read "one hundred thousand why", "young world", "energy-saving" and so on, from the book, I learned a lot of knowledge, but also know a lot of truth.

我还特别贪玩，一玩起来跟看书一样常常忘了时间，只有看见天黑才能回家。又一次中午，妈妈都回家吃饭了，我还在和小朋友一起玩，时间的向前移动，我根本没有察觉，只觉得很快就到了晌午了，爸爸来找我时，我才恍然大悟赶紧跟爸爸回家。

I also particularly fun, playing up to read a book like often forget the time, only to see the dark to go home. Once again at noon, my mother to go home for dinner, Im still and children play together, time moves forward, I did not notice, just feel very soon to noon, my father came to me, I only see light suddenly to go home with their father.

唉，我太贪玩了!我知道这是我的毛病，我也下定决心改，可总也改不了，一玩起来就越发不可收拾。我想还是自己不够坚决，从现在起，我一定要改正这个贪玩的坏毛病，留出更多的时间学习或帮助妈妈做点儿家务。

Alas, I was too naughty! I know this is my fault, I determined to change, but can not change, a play together more and more get out of hand. I want to own or strongly enough, from now on, I must correct the bad habit of fun, spend more time to learn and help my mother do some housework.

怎么样?我还是一个可塑的孩子吧!

What about? I was a boy of plastic!

Today, is my most lucky day. Just to the school, there is a feeling of excitement to squeeze into the chest. But there is a kind of worry, afraid the badly. I bring the transcript! When you come into our school, the students or the original sample, dozen dozen, the alarm, crazy. I quietly sat on a seat, waiting for their results. After a while, the teacher came. My heart will jump out. At the result, I was not satisfied with my performance. Because I score is only 286, certainly not. Clipping voting began, I sadly around, clip is too bad, I dont good-looking! I look around and find people more place to see others cut and paste. GeHongYan clip good good-looking! She wrote a lot of feelings in a notebook, is a beautiful statement! Is a talented woman! Vote, I vote for her, she must be a champion! Unexpectedly, I... Turns out to be... At that moment, I was so excited. Ive got a lovely testimonials, also get the lovely prize, but...

I didnt get the first exam score...

In the next semester, I hope I can do better

今天，是我最幸运的一天。刚到学校，就有一种兴奋感挤进胸口。可是又有一种担心，怕这次考得很糟。我要领成绩单啊!一进学校，同学们还是原来样，打的打，闹的闹，很疯狂。我静静地坐在位子上，等待着自己的成绩。不一会儿，老师来了。我的心脏都要跳出来了。报完成绩，我对自己的成绩并不满意。因为，我总分只有286，肯定上不了名次。开始剪报投票了，我沮丧地到处逛，我的剪贴报太烂了，不好看!我环顾四周，找人群多的地方看看别人的剪贴报。葛洪妍的剪贴报好好看!她写了很多感受在本子上，都是漂亮的语句!真是才女!投票了，我投了她一票，她肯定是冠军!没想到，我……竟是……那一刻，我兴奋极了。我拿到了可爱的奖状，还拿到了可爱的奖品，但是……

我没拿到考试总分第一……

到了下学期，我希望我能考得更好

1.A case in point is … 一个典型的例子是…

2.As is often the case…由于通常情况下…

3.As stated in the previous paragraph 如前段所述

4.But the problem is not so simple.Therefore 然而问题并非如此简单，所以……

5.But its a pity that… 但遗憾的是…

6.For all that…对于这一切…… In spite of the fact that…尽管事实……

7.Further, we hold opinion that… 此外，我们坚持认为，…

8.However , the difficulty lies in…然而，困难在于…

9.Similarly, we should pay attention to… 同样，我们要注意…

10.not(that)…but(that)…不是，而是

11.In view of the present station.鉴于目前形势

12.As has been mentioned above…正如上面所提到的…

13.In this respect, we may as well (say) 从这个角度上我们可以说

14.However, we have to look at the other side of the coin, that is… 然而我们还得看到事物的另一方面，即 …

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。

We know it is difficult to learn English. My English is very good. I learn English like this.

I Listen to the teacher carefully and write the important points down on my notebooks. After class I revise the lessons. Before class I prepare new lessons to find out the questions. Then I will listen carefully in class.

I also listen to the tape, and speak English with my classmates in the classroom and on the playground. It’s to improve my listening and speaking.

I keep a diary every day to practise my written English.

Besides this, I often read English newspapers and magazines to enrich my knowlege on English culture.

We will learn English well so long as we learn it hard.

For a nations dream， we start from the 1840 sea surface; to a constant pursuit， we deep in the years to write a glorious. In global view shows choice of the Chinese road of national rejuvenation; concentrated panorama in history." Around the millennium change， eventful years， Chinese new century， great turning point， span， the future of six theme， reflects Chinas great achievements since 1840， arduous and tortuous road of revitalization of the nation and the Chinese people made in China under the leadership of the Communist party. The "shock" "excited" tears ""…… This is my watch， taste right is felt when discourse. Process of reading and rejuvenation of the great， I reviewed the history of the Chinese nation 100 years the dream of power and unremitting exploration. Full and accurate historical data， magnificent momentum， a language， a precious historical pictures， shows a picture of the world national revival.

一个国家的梦想，我们从1840开始到海面;不懈的追求，我们在岁月深处写下光荣。在全球范围来看民族复兴的中国道路的选择;集中全景的历史。”在千年不变，峥嵘岁月，中国新世纪，伟大的转折点，跨越六个主题，未来中国的伟大成就，反映了自1840以来，艰辛曲折的国家和共产党的领导下的中国让中国人振兴之路。“休克”“兴奋”的眼泪”......这是我的手表，味道是觉得当话语。阅读和伟大复兴的过程中，我回顾了中华民族历史上100年的力量和不懈的探索梦想。翔实的史料，气势宏伟，语言，珍贵的历史照片，照片显示世界民族复兴。