关于空气污染的英语作文精选20篇

What a colorful world of the fall,this is a credit to the leaves,they have

red and green,the autumn dress up like a large garden.

Red maple leaves,like palms,just five piece children.Leaves a small number

of prominent teeth,the base of the heart-shaped,dark green to dark green above

to below the axillary vein has hair sense,the edge is also trimmed with lace

irregular.Bark grayish brown,with the old growth,the surface grooves and

scales.Maple leaves,autumn brings a festive and warm.

Holly tree is the symbol of vitality,crown thriving,flourish.Leaves

oval,pointed at both ends,like the two tilt of the boat.Stem and leaf surface

veins is very clear,long from bottom to top,from coarse to fine.The front of

dark green leaves,very smooth,negative light green,because there are many

prominent veins and coarse stems.Holly leaves have wavy lines on the edge of the

same jagged,but not scratchy.

The campus,red maple,holly green,a passionate,full of vitality,this is

really the mental outlook of our young pioneers it!I love autumn,I love the fall

on campus.

空气污染是空气中某些物质的含量超过正常含量时，形成危害动、植物，影响其生存的现象。大气中C0、NH3、SO2、H2S、Cl2、03和N02等物质的正常含量均在百万分之一以下，对动、植物没有明显的不良影响。但19世纪以来，由于工业和交通运输的发展，那些物质大量排入大气，使空气污染日趋严重，影响到动、植物生命活动乃至人体健康。

污染物的来源，有的来自自然界（如火山喷出的烟灰），有的来自人类活动，其中工业、交通运输产生的废气是主要的污染源。空气污染可分为气体污染物和气溶胶状污染物两大类。气体污染物包括SO2，、03，、氮的氧化物以及碳氢化合物等；气溶胶污染物包括固体粒子（粉尘、烟尘气）和液体粒子（烟雾、雾气）两类。直接向空气中排放的污染物质，叫一次污染物。空气与污染物之间相互作用，产生反应，或空气中光化学反应引起的污染物变质所产生的新污染物，叫二次染物。

空气污染物种类很多，其中对农业威胁较大的约有十多种，如SO2、 HF、C12和光化学烟雾等。 气象条件对空气污染物的影响，水平风速和对流层高度是影响大气稀释空气污染物能力的两个气象要素。当农田上空主导风向来自污染源时，农田容易受有害气体的危害；风力强弱则影响空气污染物的扩散速度、污染物在空气中的浓度与平均风速成反比；通常午后湍流强，空气处于不稳定状态时，有利于扩散。夜间晴朗无风，近地面逆温层可使污染物在地面上停滞积聚，加剧空气污染的程度。另外，在准静止的高气压系统中，由于下沉逆温阻止下层排放的污染物扩散到大气上层，可形成近几百米厚的污染层。各国多次发生的严重空气污染事件大都是在低逆温层、风速小和无雨的气象条件出现几天之后形成的。

空气中一些污染物例，如SO2和悬浮于空气中的农药颗粒等，经雨水淋溶落到地面，又可污染土壤和植株。污染物对植物的危害，一般是通过气孔进入植物组织，干扰酶的作用，阻碍代谢机能，有的有毒物质在体内还可进一步分解或参与合成过程，产生新的有害物质，侵害细胞组织，抑制光合作用，使生长受阻、产量降低、品质变劣。其危害分为急性、慢性和不可见危害等。高浓度污染物造成急性伤害，引起产量显著下降，低浓度污染物，在长时间作用下，造成慢性危害，一般症状不明显。不可见危害只造成生理上的障碍，一般没有症状。

植物受空气污染危害的程度，主要受下列因素影响：污染物浓度和植物接触它的时间；植物本身的构造和所处的发育期以及环境条件的影响。如充足的光照，适宜的温度、良好的供水和空气湿润，较高的C02浓度等，都能导致叶片气孔开放，易受污染危害。 植物对大气的净化功能。不少植物具有一种以酶作催化剂的潜在解毒力，能够分解一些有毒物质，或形成一些大分子络合物，暂时可以降低毒性。1公顷森林，每年可吸滞灰尘30多吨，1公顷柳杉林，每年可吸收700多公斤S02，柑桔树的叶子可吸收储存硫达1％，青杨和桑树具有较强的吸收铅尘的能力，加拿大杨、银杏、榆树、梧桐、桉树等都是较好的“天然吸尘器”。草坪的吸附粉尘能力比裸露地面大几十倍。因此环境科学的任务之一，是要充分发挥植物净化大气的作用。选择吸收污染能力强的植物，扩大造林绿化面积，根据污染源位置、污染物汇集区的地形地势、风向和污染气体的季节分配，统一考虑构成一种包围式或隔离式的林带，使含尘气流在移动中途被树林吸收。另方面要研究采取控制或减少排放污染物的措施，以保证大气质量符合规定的标准。

The Spring Festival, Chinese New Year,is the most important festival for all of us. All family members get together on New YearEve to have a big meal.At the same time, everyone celebrates to each other.At about 12 oclock,some parents and children light crackers.The whole sky is lighted brightly. We may watch the fireworks excitedly.How busy it is!

On the first early moring of one year, many senior citizen get up early and they stick the reversed Fu or hang some couplets on the front door. Some houses windows are sticked on red paper cutlings.

The Chinese New Year lasts fifteen days. So during the fifteen days, we always visit our relatives from door to door. At that time, children are the happiest because they can get many red packets form their parents,grandparents, uncles, aunts and so on. The last day of the Chinese New Year is another festival. It names the Lantern Festival.

So the Chinese New Year comes to the end.

春节，中国新年，是我们大家最重要的节日。所有的家庭成员都得到新大吃一顿。同时，大家互相庆祝。大约十二点，一些家长和孩子们放鞭炮，天空是明亮的。我们可以兴奋地看烟花!

在一年的第一个清晨，许多老年人早早起床，贴上颠倒的礼物，或在前门挂上对联。一些房子的窗户上贴上红纸。

中国新年持续十五天。所以在这十五天里，我们总是登门拜访我们的亲戚。那时，孩子们最快乐，因为他们可以从父母、祖父母、叔叔、阿姨那里得到很多红包。春节的最后一天是另一个节日。它把元宵节命名为元宵节。

所以中国新年就要到了。

Now, many encyclopedias, such as: "hundred thousand whys", the mystery of

the world "and so on a wide variety, all kinds of books can give us many

benefits, our world is so vast, some things in the world, and books have,

encyclopedia like" dumb teachers diligently teach us knowledge. Visible, how

useful book! Also, we learn knowledge also want to use in our daily life, to be

accurate and determine whether to do so, the right to enrich our knowledge, the

outside is good for our healthy growth. You said, a lot of the benefits of

reading?

Nowadays, more and more of the books in the library, we should also learn

to read and appreciate books, should put the book back on the in situ after the

play, not just throw the place. Also, we must find a give us the knowledge of

books to read, dont look at those who are not good for our growth.

In short, the benefits of reading. Come on! Let us to soar in the sky of

knowledge fully!

However,the Spring Festival in 2020 is totally different.A war without smoke and

guns has started,and the "new tubular virus"pneumonia has swept through.All

departments have responded positively and fought against the epidemic

together.

然而2020年的春节却完全不一样，一场不见硝烟，不闻炮响的战争打响了，不宣而战，“新型管状病毒”席卷而至，各地各部门积极响应，共同对抗疫情。

Angels in white, armed police officers and soldiers,volunteers.Many brave

men are fighting in the front line. As the lifes reverser,they have opened a

new chapter in2020.

白衣天使们，武警官兵们，志愿者们……许许多多奋战在一线的勇士们，他们作为生命的逆行者，开启了2020的新篇章。

2020 is a new beginning,but just at the time of the Spring Festival,the

Chinese people once again face the virus crisis: new coronavirus,only17years

since the last SARS in2003.

2020年是一个新的开始，可是，恰好在春节降临之际，中华人民再一次面对病毒危机：新形冠状病毒，距离上次2003年非典仅过去17年。

Before the Spring Festival this year, a coronal pneumonia swept across the

country like a wind.

今年春节前一场冠性肺炎像场风一样，席卷了全国

England is the best place I’ve ever been. Everything is so beautiful. I

spent about one and a half days on the plane. When I arrived at Heathrow Airport

in London, it was evening and the GREat trip was starting. there were many

places I v is ited in London, like Big Ben, Westminster, the Tower of

London…….those are very famous.

Most of the time in the afternoon, my parents and I sat and walked in the

park. Have you seen“Notting Hill”before? the story in the movie happens in

London. the Brit is h museum, Musee de Louver and the Metropolitan Museum of art

are the three largest museums in the world. I’ve v is ited two of them. then we

left London for Cambridge, Windsor Castle, York and Stonehenge. they were

excellent . Every small town has a h is tory of one or two thousand years. there

was an art festival called“Tutto”in Edinburgh, and there were many street

players who their lives to the shows. then we went to northern Scotland. It was

dangerous! then we went back to London, and sat in the park, and the fat geese

were so cute. That journey was the nicest memory of my life. I won’t forget

it.

It is widely noted that lots of traditional culture is disappearing along

with the development of technology. Many ancient architectures and traditional

ways of living have been deserted. It seems that the traditional culture and

craftsmanship will be replaced in this modern era.

The following reasons can account for the above phenomenon. Firstly,

traditional technologies are always considered ineffective while the new

sciences are always highly efficient, because modern science and technology

facilitate both our daily and academic life a lot, with which we can save much

money and time. Secondly, it is costly to protect the traditional culture,

especially the maintenance and repair of the historical buildings.

In my opinion, although traditional culture is an ancient heritage, it

couldnt keep pace with the development of society. It is the tide of history

that the traditional culture and technology will no doubt be eliminated in the

end.

With the development of todays technology, education becomes more

important than before because people need to learn more to adapt the

society.Education enables people to understand the world better and have a good

job in the futrue.Moreover ,it also hao an impact on peoples behavior.

First of all, education improves peoples learning ability that makes them

know more about the world.Most things taught in schools are the basic skills or

means to further understsnding of our society .Only by learning these,can human

have an opportunity to study more and know more about the society .Secondly,

opportunities are often given to someone who is good educated .Employers tend to

believe that people have high education are intelligent and they can manage

their jod and adapt the working environment quickly.That is why the educated

people always get a good job. Thirdly, the more people learn the more modest and

polite they act.Learned people think that they are not good enough ,so they show

a big patience to learn from everything .They often try to figure out the

solution of problems by things they meet or learn.

In sum,education can turn people out with better learning skills,job

offering and good behavior,so I think education is important to people to

fulfill their goals and live a easy life .

In my mind, everyone shall have his own dream. I think that having a dream

means that we have an idea, and then we will do all the things to achieve the

target. As long as we have a goal to be realized, we won’t be blind at

least.

My dream is to become a successful stateman, helping those people who need

help with their rights. Of course, to be a good stateman is very difficult, but

I will do whatever I can do to keep everyone satisfied. Thats my dream. I want

to try my best to help the poor sick people of our country. China is a

developing country which needs good stateman,especially in the countryside and

distant villages.

Now I’m a junior student on Grade One, My dream is also that although at

present I’m good at study, I’ll still try my best to be the study winner. Now

everything I do is close to my dream. I feel life is fill with hope and is

colorful, and I have enough confidence to realize my dream.

Ladies and gentlemen,

I feel it a great honor to have a chance to give a speech here, talking

about the haze weather, which causes lots of bad effects on our health and life.

We breathe polluted air, making us suffer from lung and liver diseases. Besides,

because of it, the flights have to be canceled. All kind of transports may run

into each other, resulting in much damages and lots of injuries.

As far as I am concerned, it is high time that we did something. As

individuals, we should ride the underground or buses instead of cars to reduce

carbon dioxide. As government, more measures should be taken by carrying out the

related law on pollution.

In summary, we’re all looking forward to breathe fresher air and live a

happier life. Everyone should be a part of this job.

Thank you for your listening.

Waking up on New Year, everybody dresses up. First they extend greetings to

their parents. Then each child will get money as a New Year gift, wrapped up in

red paper. People in northern China will eat jiaozi, or dumplings, for

breakfast, as they think "jiaozi" in sound means "bidding farewell to the old

and ushering in the new". Also, the shape of the dumpling is like gold ingot

from ancient China. So people eat them and wish for money and treasure.

Southern Chinese eat niangao (New Year cake made of glutinous rice flour)

on this occasion, because as a homophone, niangao means "higher and higher, one

year after another." The first five days after the Spring Festival are a good

time for relatives, friends, and classmates as well as colleagues to exchange

greetings, gifts and chat leisurely.

China has 56 ethnic groups. Minorities celebrate their Spring Festival

almost the same day as the Han people, and they have different customs.

When a guest comes to my home from afar on a cold night, I light bamboo to

boil tea to offer him. Ancient Chinese poem.China is the home country of tea.

Before the Tang Dynasty, Chinese tea was exported by land and sea, first to

Japan and Korea, then to India and Central Asia and, in the Ming and Qing

dynasties, to the Arabian Peninsula. In the early period of the 17th century,

Chinese tea was exported to Europe, where the upper class adopted the fashion of

drinking tea. Chinese tea like Chinese silk and china has become synonymous

worldwide with refined culture. At the heart of the culture of tea the study and

practice of tea in all its aspects is the simple gesture of offering a cup of

tea to a guest that for Chinese people today is a fundamental social custom, as

it has been for centuries.China traces the development of tea as an art form to

Lu Yu, known as the Saint of Tea in Chinese history, who lived during the Tang

Dynasty and who wrote The Book of Tea, the first ever treatise on tea and tea

culture. The spirit of tea permeates Chinese culture, and throughout the country

there are many kinds of teas, teahouses, tea legends, tea artifacts and tea

customs. Better-known places to enjoy a good cup of tea in China include Beijing

noted for its variety of teahouses; Fujian and Guangdong provinces and other

places in the southeast of China that serve gongfu tea, a formal serving of tea

in tiny cups; the West Lake in Hangzhou, also the home of the Tea Connoisseurs

Association, noted for its excellent green tea; and provinces in southwest China

like Yunnan where the ethnic groups less affected by foreign cultures retain tea

ceremonies and customs in original tea-growing areas.

Do your teachers still use traditional techniques to teach you nowadays? A

revol- ution in teaching techniques is required now. In the past, we just took

it for granted that a teacher s aim was to teach the students all that he knew

and solve all the problems for them. Therefore, students could mot judge things

on their own under this circumstance. Thus students gradually lost the ability

to learn by themselves. In addition, they were only equipped with the knowledge

that were taught in class and made the same judgement upon every problem which

might crop up. Of course, they would find their knowledge not enough to solve

practical problems.

So it is time to change the teaching method. A teacher s goal is to help

the students develop not only the ability to learn by themselves but the skills

to make judgements on every aspect on their own. It s not necessary for the

students to turn to teachers for help while meeting with difficulties. The first

thing is to develop the students abilities to make sound judgements upon any

problem and overcome difficulties.

All in all, the aim of teaching is to liberate, but mot to fetter the

students innate powers of making sound judgements.

It is reported that thick fog and haze surround many parts of China. People

have to wear masks when they go out.As air pollution is getting increasingly

worse,it has become the main concern of people.

Air pollution can have serious consequences for human’s health and also

severely affects natural ecosystems. Millions of people die of illnesses related

to air pollution every year.Due to particles from exhaust emissions,green house

effects result in warmer weather,acid rains corrode the earth,and frequent haze

causes traffic problems.

Confronted with such situation,positive measures should be adopted. The

government should keep its regulatory role for properly supervision. Related

rules should be made out for reducing emissions of new vehicles and limiting

high-emission vehicles.Factories should meet standards for curbing emissions of

pollutants in surrounding cities.Meanwhile, provinces and municipalities in each

target region should set up a mechanism for the joint prevention and control of

air pollution.

It was a very busy evening. I was doing my homework at my home. My father was writing a composition in the study room. My mother was interested in Shanghai opera. She was watching a Shanghai opera contest. The apartment was very quiet. Suddenly the light went out. It was a blackout, but I liked it very much. It came and I didn’t have to do my homework. We went to the living room very slowly. After 5 minutes, we all sat in the sofa. It was a lucky, fortunate day. I said that let’s held a concert. My parents agreed with me. I took out some candles and lighted up. We were singing, laughing and talking. We had a really good time. But while I was singing, the light suddenly turned on. Oh, my God. My father went back to his room went on writing. My mother turned on the TV and said to me “Dear, do your homework!” I felt very frustrated. I sat at the desk and thought I hated light. I hoped there would be a blackout the next day. I thought I would enjoy myself more and more. I went into a dream……

今晚真是个忙碌的晚上。我正在家里写作业，我爸爸正在书房里写作文。我妈妈对上海歌剧感兴趣。她正在看上海歌剧比赛。公寓非常安静。突然间断电了。一切都黑麻麻的，但是我很喜欢。断电了，我就可以不用写作业了。我们慢慢的走向起居室。五分钟后，我们都坐在沙发上。这是一个既幸运又倒霉的一天。我说让我们开个音乐会。 我父母都同意了。我拿出一些蜡烛并点燃它们。我们唱歌，大笑，聊天。我们都玩得很开心但是当我在唱歌时，灯突然亮了。哦，我的上帝啊。我爸爸继续回房间写作文。我妈妈开着电视并对我说“亲爱的，去写作业!”我觉得很沮丧。我坐在桌子边，想我恨灯光。我希望第二天还能够断电。我觉得我会越来越开心的。我陷入了梦境…………

I think reading is important in the whole life for people. There are many

benefits of reading.

Firstly, reading increases our knowledge and we can learn the world affairs

without going out. Secondly, reading is a good way to improve reading and

writing skills. Before you learn to write, you must know how others write.

Thirdly, reading can broaden our knowledge and horizon, which is important to

job hunting in the future.

Finally, reading helps us become self-cultivation that would be beneficial

to our whole life. Therefore, start to reading, no matter how old you are and

what you are doing. Then, you may find the great charm and benefits of

reading.

Nowadays, house husband has become a hot phenomenon in modern society. As

we all know that no matter what country, it’s a tradition that men play a core

role in family who always take the burden to earn money to support their family.

But things are kind of different as society develops, more and more men are

beginning to take over housework while women go out from house. In my point of

view, I think this is not a big deal.

In the first place, house husband may be a shame title for men, but when it

comes to money, there is no room for reputation. As society develops, the life

standard are rising, and everything for living is much expensive than before, if

couples want to guarantee their life quality, then they should let the one who

earn better to work, although the one is female.

In the second place, it’s fine for women to support family as long as they

earn better than men. In the past, women always were treated very badly, and

they got no rights to be educated, to work. In some countries, they can’t even

show their face to others. A traditional female role is to stay at home, taking

care of children and do all of the housework. But now, lots of women have a good

job, so that they totally have the ability to be the economic backbone.

Therefore, in order to take good care of family, men are likely to stay at home

to do housework. I don’t think it’s a shame for men, because no matter what you

do, as long as you do it well, you are successful.

To sum up, people should change their opinion about core role of a family.

It’s acceptable for women to support the family, and there is no shame for men

to do the housework. As long as you remember life quality comes first.

Computer is increasingly popular in people’s daily life. The number of

computer in every family is more than TV set. Some people think it is so great

that they all regard it as a gift from the heaven. However, some people consider

it brings more disadvantages than advantages. In my opinion, both opinions are

correct, but if we can use computer in a proper way, its advantages are superior

to disadvantages. I have several reasons.

On the one hand, computer makes human beings’ life become easier. People

can do many things that they can’t do before. They can read newspaper without

buying it, only sitting in front of their computer, clicking mouse to open

website. Shopping online, watching movies, listening music and play computer

games are the common things that people often do by computer. But without

computer, they can’t do all these easily. In addition, computer is also very

helpful for study and work. People can have classes and work on it.

On the other hand, computer has so many attractive things that some people

will be addicted to it. Some of them may busy finding funs on it, and then

ignore their real duty, such as, study and work. As a result, it will have great

bad effect on their future.

To sum, computer has advantages and disadvantages. But if people can

control themselves to use computer properly, it is useful for their whole

life.

My Sister 我的姐姐

Allow me to introduce my sister. Her name is Carol. She is tall and slim. She has big eyes and wears a pair of glasses.Her hair is long and blond. She is very polite and helpful. She is willing to give seats to the people in need in the bus. She has the same hobby with me. We both like playing tennis and computer games. I don’t think she plays better than me in tennis. But she plays better than me in computer games. Such as Russia, Bricks,Bubbles and so on!

My sister is very hard-Working. She is learning IELTS by herself. She wants to be a teaeher in the future. I think she can make it!

【参考译文】

请允许我介绍一下我的姐姐。她的名字叫卡罗尔。她又高又苗条。她有一双大眼睛，戴着一副眼镜。她的有一头很长的金发。她很有礼貌而且乐于助人。她坐车的时候愿意把座位让给需要的人。她和我有相同的爱好。我们都喜欢打网球和玩电脑游戏。我不认为她网球比我打得好。但她电脑游戏玩的比我好。如俄罗斯，砖块，泡沫等!

我的姐姐总是很努力。她正在学习雅思。她将来想当老师。我认为她能做到!

Among all means of transportation, I like bicycle most. It’s cheap as well

as popular.

There are many advantages to ride the bicycle. In the first place, riding

bicycle makes me feel independent. I can go anywhere by bicycle. Especially

during rush hours, I can still move freely. Secondly, using a bicycle is good

for environment protection, because it wont emit any waste gas. Moreover,

bicycle riding is also a good sport. While riding a bicycle, I can exercise

myself, which is healthful to me.

In my free time, I often ride my bicycle to get around in the downtown area

or in the countryside, so as to relax myself. Its really a nice outdoor

activity for me, I think.

I imagine a lot about lives in the future. I think two words can summarize

my imagination. The first word is fast. In the future, we will have more quickly

transportation means. Now matter how far we go, it takes only a short time. With

the development of science and technology, we can travel to the moon, Mars or

somewhere outer space. People may can live in other planets. The second word is

convenient. Because of the fast development of our society, many work can be

done by computers or even robots. Lots of things are fully automated. Humans

just need to give some simple instructions to complete complecated tasks.