与环境污染有关的英语作文最新20篇

The campus is like the flowers, the fragrance of the intoxicating, the smell of love. The schoolyard is like rain dew, nourish us, cultivate us; The campus is like a dream, that kind of beautiful, that kind of sweet. I love this garden campus.

"Beautify campus, green campus". Our campus has become green and beautiful. Flowers, small trees, patches of grass, flowerbeds, our campus is full of life and fresh.

"The air is fresh, clean and tidy environment, buildings, surrounded by green trees", who dont want to in such a clean, sanitary, healthy growth of the beautiful campus learning? But for various reasons, our campus environment is being undermined by the bad behavior of some students. Nowadays, in our beautiful campus, there are some uncivilized phenomena, some students randomly throw in the peel of paper, plastic bottles, melon seed shells and so on. Whenever naughty wind these waste, running here and there, tinkling like a child, helpless, we can only watch them on campus "dance", and even some classmates in the scribble on the white wall and the desk carved, and disorderly spit phlegm, and so on. All this, cannot match with our beautiful campus. See these phenomena, how would you feel? Does studying here make everyone happy?

In order to let us have the beautiful campus of green trees, clean environment and grass, please act quickly! Use your own hands to protect the beauty of the campus environment. Through radio, blackboard, speech competition, knowledge competition, the development theme class meeting, publicity of the importance of protecting our campus environment, the necessity, form "real small is my home, beautiful depends on everybody" good atmosphere; Start everyone from yourself and start with the little things around you. As the saying goes, "do not be small but do not be evil." Get into the habit of not littering, spitting, not scribbling, trampling on the lawn, moving, bending, and so on. Dear students, Let us join hands and work together to create a beautiful and tidy learning environment for ourselves. Isnt that bad?

I am convinced that the campus is beautiful, friendly, is a place where we learn to grow, we love the campus, love every inch of the campus, lets work together to protect the environment of the campus!

与我们的生活水平的提高,越来越多的人都买得起汽车的.因此,道路往往没有堆满了汽车.然而,随着越来越多的废气排放是汽车、空气污染问题变得更加严重.所以现在我们提倡过低碳的生活.以下是小编为大家整理分享的写环境问题的英语作文，欢迎阅读参考。

写环境问题的英语作文

With the improvement of our living standard, more and more people can afford a car. As a result, our roads are more often than not crammed with cars. However, with more and more waste gas being discharged by the cars, the problem of air pollution becomes even more serious. So nowadays we advocate to lead a low-carbon life.

My suggestion is we should ride bikes more often instead of driving cars.By riding a bike, we can not only exercise our body but also protect our environment. Why not have a try, my dear friends?

与我们的生活水平的提高,越来越多的人都买得起汽车的.因此,道路往往没有堆满了汽车.然而,随着越来越多的废气排放是汽车、空气污染问题变得更加严重.所以现在我们提倡过低碳的生活.

我的建议是我们应该更经常骑自行车而不是开车骑一辆自行车,我们不仅能锻炼身体,也能保护我们的环境.为什么不试试,我亲爱的朋友?

写环境问题的英语作文

Now, our side of the car constant more up, the environment also increasingly worse! That the air around us there are many harmful substances. Therefore, we want to Sue around things start to do. For example, we can go to school by bike or walk, it can exercise. If you have time can use less elevator, many climb stairs. We can not only physical exercise, but also to protect our environment.

现在,我们身边的汽车不断的多了起来,环境也越来越糟糕!以至于我们周围的空气有很多有害物质.所以,我们要苏身边的小事做起.比如,我们可以骑自行车上学或者步行,这样还可以锻炼身体.有时间的话可以少用电梯,多爬楼梯.我们不仅能锻炼身体,也能保护我们的环境.

我们的环境污染我们现在的生活比以前好得多，但环境跟以前简直就不能比。以前的空气清香并掺和着花草的芳香，河水清澈见底。而现在呢?汽车排出的废气和工业废气相当多，河水臭气直出。我们大家为了过上好生活，都买汽车，但车主们有没有想过这样的量使用汽车的后果。

有些地方之间的距离非常近，但车主们不想跑，就直接开汽车。假如一辆汽车一天排放一千克废气，那么中国每天大约有几千万辆汽车在行驶，那么一天就要排放几千万千克的废气。这个数目仅显示一天一千克的废气排放量和仅计算中国的废气排放情况。工厂的污染更严重，水和空气都要被污染。大量的废水排入大海和河流之中，以致大量的鱼虾、水中植物死亡和大量的水资源被污染。

我们地球上的资源也在一天一天的减少。大量可回收的品中只有3﹪是被回收并再生的。许多白色垃圾造成了白色污染。我心中的家园是和以前差不多的，可是这是很难挽回的。为了我么大家共同生活了几千万年的蓝色星球？——地球的美好未来而努力吧！

以前的家乡，走在小道上，都听得见小鸟欢唱，看得见野草翠绿，鲜花盛开，好一幅欢快、活泼的景象！现在走在小道上，没有了小鸟清脆的鸣叫声，只有汽车可怕的鸣笛声！没有了翠绿的小草，盛开的鲜花，只有人们乱丢的垃圾成千上万！

以前的家乡，坐在河边，或是在河边游泳，都会有小鱼亲亲你，逗得你哈哈大笑。现在坐在河边，看不见准备亲你的小鱼，只看得见那恶心的白色垃圾荡漾在水面上，散发出阵阵的臭味，所以，更不用说有人敢下水游泳了。

以前的家乡，放眼望去，到处都是数不清的花草树木，还有许多鸟儿在树上搭建起自己温暖的小窝。现在，放眼望去，能看见的花草树木已经很少很少，小鸟也没法安居，只有几截孤独的树桩在那儿嘘寒问暖！

以前的家乡，夜晚群星闪烁，挂在天空中，仿佛向你诉说衷肠。可现在的星星不明亮了，只有那忽闪忽闪的霓虹灯，散发着诡异的光芒！我望着象征繁华的霓虹灯，却怎么也高兴不起来。

人们啊，地球只有一个，如果破坏了她，最后吃亏的还是我们呀！所以，让我们一起行动起来，保护我们的家园吧！让地球变得鸟语花香，生机勃勃！也让我们每个地球人都过上幸福、美满、快乐的生活吧！

我家可是个环保“节约小组”，奶奶每天都会提醒我：“出门上学别忘记关灯啊”。这句话已经是奶奶的口头禅了，也是我每天必须听到的话，然而这句话已经深深地记在我的心中。每天去上学的路上，都会看见一些不文明的现象，有的人踩踏草地，有人随地吐痰，甚至有的人向河里倒垃圾，等等……

我想对他们说，地球是我们的母亲，我们是地球的孩子，不要随意给地球妈妈增添负担，让她难受。那些不文明的现象，其实我们是可以克服的。虽然地球妈妈还可以生存很多年，但假如有一天，地球妈妈不在了，我们还在吗?我们人类也只是生存在地球上的一种生物而已，和许多小动物小草一样。

那些踩踏草地的人们，你们不知道小草也是有生命的吗，它们为我们贡献绿色，为环境增添美丽。那些随地吐痰的人们，你们知道你的口水里有多少细菌吗，随便一吐，会让多少人有被感染的危险。那些向河水倒垃圾的人们，你们不知道你的家门口都有蓝色的垃圾桶吗，只要倒入垃圾桶，让清洁工人集中整治，会省去很多污染的。

随着人们生活水平越来越高，人类产生的垃圾也就越来越多了，还有各种各样的工业污水污染，我听长辈们说，我家附近的河，十多年前，每天都是黄色的，工厂直接排污进去，都开玩笑的叫它，黄河。现在这几年，政府注重了环保，河水经过打干排污，工厂也不在直接排污水，水质得到明显提升，夏天，现在好多人都在那游泳了。这让我感到很开心。从这件事上，我们可以看出，只要人们注意环保，都是可以改变的，虽然我们只是小学生，没有能力改变大环境，但是我们只要从身边小事做起，一样可以为创造优美环境出一份力的。

我们小学生对那些不文明现象应该提出劝告，让他们知道，破坏环境就是破坏自己的家园，让他们知道那些行为是可耻的，让人们知道，保护环境人人有责。

我相信，人类一定会努力向污染宣战，从身边小事做起，我们只要用心，一定可以减少污染打败污染的。

As we all know, the environment around us is getting worse and worse /more and more seriously today. Water is polluted, we have no clean water to drink. Many trees are cutting down, some animals are getting less and less. Some factories are pouring dirty air into the sky. The population is increasing faster and faster, resources are getting less and less…etc. Not only does it affect our lives and health, it also has a great affection in the future. People’s health has been greatly affected by air, noise and water pollution. Many people died of diseases. In order to live a better life, something must be done to stop the pollution. It’s our duty to protect our environment. We shouldn’t throw away rubbish everywhere. Trees are very helpful and important for us. We should plant more and more trees in order to live better and more healthy in the future.

If everyone makes contribution to protecting the environment, the world will become much more beautiful. In a word, if everyone pays more attention to our environment, there will be less pollution and our life will be better. “There is only one earth”, I hope everyone will protect our environment well.

[英语作文保护环境200字

It is very important to deal with the rubbish in cities. Rubbish must be thrown away or reused properly. Or it may cause a lot of problems. It may pollute the air and water. People may get ill when they breathe the polluted air or drink the polluted water.

Our city has started to face the problem. Some rubbish is sorted and sent to a certain place .Waste gas is cleaned before it goes into the air. Waste water is also cleaned before it is poured into rivers.

People should be prevented from throwing rubbish everywhere. We should try our best to take care of our environment and fight against pollution六年级英语环保作文：Saving Our City.

Today, I suddenly flashed a thought from the mind is: to protect the environment, protect the nature.

You see, on the other side of the grass in the cry, you listen to, this way of floret cry on, you see, on the other side of the tree disappeared, leaving an empty tree stump. This is because our human deforestation, plants and animals are living in horrified, we should protect the ecological balance, afforestation. Green action in our midst!

Today, I give some watered trees in our community, drink water the young trees, in the sweet smile, you listen to, young trees n oise, n oise singing, thank us!

Then ShaJunNing and I made several sign, reading: "dont. FeiZhiXie GuaGuoPi, just throw trash can, for you laugh, to let him eat satisfied. The grass to also want to sleep, disturb the grass can be bad."

We just wanted to do, have a grandmother to see, where grandma also looked at carefully.

今天，我突然从脑海闪一个念头就是：保护环境，保护大自然。

你看，那边的小草在哭泣，你听，这边的小花在哭诉着，你看，那边的大树不见了，只剩下一个空树桩。这都是因为我们人类乱砍滥伐，动植物们都过着胆战心惊的生活，我们应该保护生态平衡，植树造林。绿色行动就在我们身边呀!

今天，我给我们小区里的小树浇了一些水，小树喝着水，在甜甜的微笑，你听，小树沙沙沙，沙沙沙的在唱歌，感谢我们呢!

然后我和沙俊宁又做了几个标牌，上面写着：“废纸屑，瓜果皮，随手乱丢可不要。垃圾桶;对你笑，赶快让他吃个饱。小草也要睡大觉，惊动小草可不好。”

我们刚要做好，有一个老奶奶就看见了，在那里，老奶奶还仔细看了一下。

保护环境，人人有责，现在，环境遭到了恶劣的破坏，因此，我懂得了保护环境。

Protect environment, everyone, now, the destruction of environment has been bad, therefore, I know Protect environment.

在生活中，仍有很多人在乱砍伐树木，有一本书上写着这样一个故事：有几个人在砍树，半天就砍完一片森林，旁边有一个人，半天连一棵树都没栽下。要知道，环境对于人类来说是多么重要啊!我们破坏了环境，可是遭到报应的还是自己，仔细想想，多么不应该呀!

In life, there are still a lot of people in the indiscriminate felling of trees, a book is written in such a story: a few people in the trees, half cut down a forest, next to a person for a long time, even a tree not planted. You know, how important is for human beings! We destroy the environment, but retribution or their own, think about it, how should not ah!

虽然，政府对排污方面进行了制止，可是，还有些公司还在排污，我看到电视里的新闻：有一家公司把泥浆顺着一条蓝色的管子排放到一条小溪中来，使当地居民抱怨不已。

Although, the government stopped the sewage, but also some companies still, sewage, I saw the news on TV: there is a company in the mud along a blue tube discharged into a stream, so that local residents complained.

想一想，我们破坏了环境，使全球天气变暖，海水在几十年或者几百年后就要把我们淹了，这都是我们造的孽呀!所以，请伸出我们的双手，尽自己最大的努力去挽回吧!

Think, we destroy the environment, so that the global warming, the sea in a few decades or hundreds of years to we covered, this is our own doing! So, please stretch out our hands, try my best to recover!

​导语：现阶段环境污染愈加严重，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

THE citys meteorological observatory issued a white warning sign Thursday indicating the citys weather could be influenced by a tropical sand storm in the next two days.

The meteorological observatory in Beijing said the storm could hit the city.

"Coastal areas in eastern Beijing could have winds as strong as force 8," the observatory said.

The air quality will become rather terrible with the sand storm.

The wind and sand will cause the city pulluted.

Terrible sand storm!

【参考译文】

星期四，该市气象台发布了一个白色预警信号，表明该城市的天气可能在未来两天受到热带沙尘暴的影响。

北京气象台说，风暴可能袭击该市。

天文台说：“北京东部沿海地区的风力可能比8级强。”。

沙尘暴将使空气质量变得相当糟糕。

风和沙将导致城市污染。

可怕的沙尘暴!

Through the ages, the earth mother with sweet milk feeding countless generations. The original she was decorated lovely young players. But, now human to its own interests, tortured her. Humans have only one earth; And the earth is facing serious environmental crisis. "Save the earth" has become the strongest voice people all over the world.

I feel heartache for the deterioration of the environment, I think: as the future successors of teenagers, if dont understand the gravity of the composition of the human environment and environmental problems, ignoring the laws and regulations on environmental protection, not to strengthen environmental protection consciousness, consciously fulfill their obligation to protect the environment, our life will be destroyed in his hands, god will make a severe punishment for us. Therefore I was determined to start from me good care environment, protect our survival home, be a guard to protect the environment.

古往今来，地球妈妈用甘甜的乳汁哺育了无数代子孙。原来的她被小辈们装饰得楚楚动人。可是，现在人类为了自身的利益，将她折磨得天昏地暗。人类只有一个地球;而地球正面临着严峻的环境危机。“救救地球”已成为世界各国人民最强烈的呼声。

我为周围环境的恶化而感到心痛，我想：作为未来接班人的青少年，如果不了解人类环境的构成和环境问题的严重性，无视有关环境保护的法律法规，不去增强环境保护意识，自觉履行保护环境的义务的话，我们的生命将毁在自己的手中，老天将对我们作出严厉的惩罚。为此我下定决心要从我做起爱护环境，保护我们这个赖以生存的家园，做一个保护环境的卫士。

"Green" the eternal topic, let us better to understand the importance of

environmental protection.

Green environmental protection is to make us live a happy life in a clean

environment, however, the environment around us in a worse if we dont alarm,

then, our motherland will be a mess in our hands! Green environmental protection

starts from me. My dad used to drive his car to work, listen to my advice, to

protect the environment, he ride a bike from now on, he thought that not only

the exercise of his body, also for the green environmental protection.

My mother began to contribute to the green environmental protection. Before

she went to vegetable market to buy food, she used plastic bags, a village green

environmental protection propaganda on TV, she understood the green

environmental protection is sustainable, in order to we can have a better

environment. In order to we live healthier lives, so mom from that moment on,

every day go to vegetable market with the own basket, instead of plastic

bags.

As a new era of junior middle school students, and I will response to the

green environmental protection call for, I had at school are all use one off

chopsticks, but now I can bring their own chopsticks to school. I think, though

this is a small matter, but I do my responsibility.

Happiness of life to let China land everyone be permeated with happy smile,

rich products, long history, noble quality, the plot environment. Nowadays, the

environment is polluted, the green environmental protection starts from me, let

us together to protect the environment!

环境对人类十分重要，可是有些人不爱护环境，也不知道环境对人类的重要性。

你看，许多人都不爱护环境，它们随地扔垃圾，有些人认为：一个垃圾算什么?可是积少成多，小区里最好看的地方成了垃圾站。有些人为了建房子挖山砍树，美丽的小山变成了沙漠和房子。有些人没时间做饭，就在外面快餐店买了饭一边走一边吃，吃完饭后他们还把一次性饭盒，一次性筷子丢在地上。有些人为了展示自己家里很有钱就开着跑车在路面上到处跑。他们没有意识到既污染环境又浪费能源。有些工厂将一些污水、浓烟排入江河和天空。

为了我们的环境，为了我们的生活，我希望人们可以把垃圾扔进垃圾桶，少砍树多造林，尽量回家吃饭。将废气废水引入地下，不要展示自己多么有钱，要注意节能减排。

相信在大家的努力下不远的将来，我们的城市会更美!

Create a green campus

With the development of scientific conductions, our daily life is becoming more and more convenient. But everything has both its good and bad sides, pollution has become a hot topic while the science’s building up. So the word “green” has been paid great attention among us .So do our campus.

Creating a green campus is very important to build up a wonderful atmosphere. ”Green campus ” does not only means green environment, but also means positive study atmosphere, good personal qualities and refer to that the students should be educated and have an environmental sense in their mind. What’s more, what I want to stress is that it sets goals toward the future of the world.

To bring “green campus” to its full play, effective measures should be taken. First, learning is the most important thing, which can

strength our personal qualities. Second, we should take care our daily actions about manners and pick up waste papers here and there as we can do. Third , when you make mistakes or someone help you, you should say “sorry” or “thank you” to people with your sweet smile…

Green campus make us live in a soft and warm environment. So we ought to do our best to build green campus.

As we all know, a better result of study can be brought by a better study environment. As a result, it is necessary for us to build the green campus. The green campus can not only provide a good environment for our study, but also be a part of build the harmonious society.

The green campus is not only the environmental being green, but also the sprite being green, which means we should do other things like helping each other or caring each other. Therefore, we should both beautify the campus environment and create a campus culture.

As students, we enjoy the campus time while we have responsibility to build our green campus. In spiritual term, we

should respect teachers, classmates and other people work for the school. In environmental term, we should have good habits to keep campus in a clean surrounding.

and to stop any environmental pollution. Therefore, governments are playing the most important role in the environmental protection today.

In my opinion, to protect environment, the government must take even more concrete measures. First, it should let people fully realize the importance of environmental protection through education. Second, much more efforts should be made to put the population planning policy into practice, because more people means more people means more pollution. Finally, those who destroy the environment intentionally should be severely punished. We should let them know that destroying environment means destroying mankind themselves.

Recently we have held a class meeting to discuss what is considered to be honorable behavior and what is shameful.It is really a pity to see all this in our school.Some students don’t respect their teachers or parents. Some don’t take their studies seriously and cheat in exams. Some throw wastes everywhere and pollute the environment . It is honorable to obey the law and rules , care much about our class and study hard.It is shameful to break school rules, to be selfish or to make little effort to achieve success.We should respect others and think more of them than of ourselves.We should work hard and make much more progress to repay the society.We should try our best to keep the environment clean。

哦！家乡变了，家乡变了，我怀着无比激动的心情来到家乡。

下了车，眼睛突然一亮，哇！家乡简直是梦幻美丽的天堂。眼前，是一排排苍翠挺拔的大树，像一位位士兵守卫着这梦幻般的仙境。脚下的路更加宽阔平坦，不再蜿蜒崎岖。向前走10分钟，一条清澈见底的小溪便印入眼帘，水底的鱼虾清晰可见，它们无忧无虑地在小溪里穿梭，快乐的好像神仙一样。在阳光的照耀下，水面破光粼粼，像一面洁白无瑕的璞玉。小溪旁，是一片翠绿的草坪，几棵小草，伸着懒腰，从土地里钻了出来，探视着这五彩缤纷的世界；小花涨红了脸，呼吸着春天的香气息。

家乡的变化可真大啊！想当年，家乡的环境十分恶劣：山上，一群肌肉结实，身体强壮的年轻男子，拿着一把把锋利的电锯，无情地把高大粗壮的树木砍伐一空。生活在山林的小动物都仓皇而逃，过着定无居所的日子。生活在小溪旁的人们更受着百倍的煎熬，溪水恶臭浑浊，鱼虾奄奄一息。溪旁的小草面黄肌瘦。无精打采，小花也垂头丧气，没有了往日的生机。更恐怖的是，环境的污染使得可怕的自然灾害降临到家乡。瓢泼大雨使山体滑坡，严重的泥石流，造成了许多人财产受损。幸亏人们对家乡长生了保护意识，在荒山上植树造林，把小溪的垃圾清除一空……这才把家乡从死亡的边缘拉了回来。

我们美丽的家园需要爱，请保护环境吧！让我们的地球永远拥有美丽、青春的活力。

在十年前的中国，大气污染问题对于普通民众来说可能是个比较飘渺的话题。正如空气本身的性质一样，看不见摸不着却无处不在。而专家学者们则主要关注的是对于工业生产，燃煤发电所产生的硫氧化物的处理和汽车尾气中氮氧化物的处理。十年时间飞逝，随着中国经济的迅速发展，人们生活水平的不断提高，人们开始关注生活的质量问题。与其同时越发严重的正是中国以牺牲环境为代价发展经济所带来的环境问题，其中大气污染问题尤其明显。这几年来关于温室气体和温室效应的话题被讨论得沸沸扬扬，专家们各有其立场，但对于普通百姓来说，全球变暖问题似乎仍很遥远。对于温室气体所带来的全球变暖，海平面上升，冰川融化，动植物灭亡的问题，人们大多数是在电视新闻或报刊杂志上看到，恶劣天气的频发也并不是发生在世界每个角落。相比于温室气体所带的大气污染问题，人们开始关注更多的便是最近发生在北京，广州，武汉等多地的灰霾问题。尤其是在北京持续很久的灰霾严重影响了当地人们的日常生活和身体健康，更是引起了广大专家学者和普通民众的高度关注。而其实对于灰霾现象，国外专家学者很多年前便开始研究。

那么何为灰霾？灰霾是导致近地面大气浑浊的多种空气污染物的混合体。构成灰霾的主要污染物是硝酸盐、硫酸盐、有机碳、元素碳、等固体细颗粒物（PM2.5）和臭氧()、二氧化氮（）、二氧化硫（）、挥发性有机物（）等气态污染物。灰霾往往与天然污染源的排放和二次污染污染物的形成有关，还与一定的气象条件和地形有关。我们现在最关注的同时也最难解决的室外污染物之一是可吸入颗粒物。可吸入颗粒物被分类为两种，直径小于2.5微米的颗粒物（PM2.5）和直径小于10微米的颗粒物（PM10）。虽然两种形式的颗粒物都对人类健康有极大的危害，PM2.5被普遍认为是更危险的，因为它的体积小，大约只有人类头发宽度的1/30。人们在呼吸时，PM2.5可以进入人类肺组织深处，甚至进入血液，造成严重的健康问题。同时更小的颗粒物在大气中可以有较长的停留时间。因此，PM2.5可以传播的更远，停留在空气的时间越长，影响更大的人口。PM2.5和PM10的主要来源包括机动车，电厂和其他工业源，以及生物质的燃烧。其中一个主要的来源是柴油为动力的车辆。这些污染源相结合，可以在城市或农村地区天空一片阴霾，而且往往发生在下午时段。

对于容易形成灰霾的城市,除了城市当地工业污染,汽车尾气的影响以外,特定的地形导致污染物的难以扩散也是灰霾形成的主要原因，像美国的洛杉矶,还有前面提到的受灰霾影响的北京和武汉都受到了地形的影响。洛杉矶市三面被群山包围，当地空气干燥，白天阳光充足。到了晚上，地表面冷却很快。地面附近的空气变冷，而上层空气都比较热，形成逆温。北京市位于华北平原的西北边缘，背靠太行山余脉和燕山山脉，面对辽阔的华北平原，东南距渤海约150公里, 地处暖温带半湿润地区，气候属于暖温带半湿润大陆性季风气候,四季分明，春季多风和沙尘，夏季炎热多雨，秋季晴朗干燥，冬季寒冷且大风猛烈。武汉市则居于内陆、距海洋远，周围地形如盆地，集热容易散热难，河湖多、晚上水汽多，城市热岛效应和伏旱时副高控制明显。通过比较以上3个城市的情况可以发现它们都是较大的工业城市，而且城市海拔较低，周围至少有一面是高地，都分布在低于南北纬50度的地方。这些地区夏季阳光明媚，天气温暖干燥。在城市的盆地地区，逆温现象十分普遍。夏季的阳光使地面温度升高，城市街道和建筑物迅速升温，与炎热的物体表面接触的空气温度升高。通过对流空气向上运动，但它却不能穿透逆温层，因为上面的空气温度更暖且密度更小。空气聚集，但连续的对流形成了垂直的循环，使空气完全混合在一起。从建筑物和汽车废气释放出的气体和颗粒也都聚集在逆温层下，通过对流把聚集的空气彻底混合。这样导致污染物无法快速扩散而聚集，大大增加了当地的污染物浓度。

城市内部灰霾的形成也同样受到了这种类似地形的影响，学者称它为街谷模型。随着城市化的加速，城市及城市周边的自然生态系统逐渐被人工生态系统取代，取而代之的是钢筋混凝土浇筑的高楼与马路,很容易形成城市街道峡谷。这种城市街道峡谷是指两侧有连续，高大建筑物的狭长城市街道空间。在这种地形下,上层大气在进入城市时，风速迅速降低并产生特殊的湍流，使街谷内的流场完全不同于上层大气。而气流对污染物具有显著的运输、稀释、和扩散作用，因此，对城市街谷内污染物的浓度、分布有着很大影响。北京的灰霾现象正是因为污染物积聚难以扩散而导致北京的灰霾持续了如此之久。有相关专家的研究发现,除了通过控制排放源,增大扩散和增加沉积率来降低大气中污染颗粒物的浓度以外,地面的性质也影响着颗粒物的浓度。有研究表明植被对城市空气质量能有接近5%的提高。在城市，尤其是在城市街谷地带种植植被能通过增加沉积作用而降低60%的可吸入颗粒物（PM）浓度和40%的二氧化氮（NO2）浓度。因此，通过对植被的合理利用能过创造一个有效的城市污染过滤膜，对密集城市地带空气质量的提高有着快速有效并且持续性的影响。

灰霾问题不是一个暂时性的问题，相反它是一个长久的问题，从它如何形成，加剧到我们如何解决治理并消除都需要一段很长的时间。

灰霾现象，它只是地球环境污染的一个缩影。我们更应该探究它的根源问题，什么才是它形成的根源，什么才是它加剧的根源。我们没法通过改变天然的气候和地形来解决城市灰霾问题，但我们可以通过减少排放源，通过增加植被，加强城市绿化来阻止灰霾的加剧。人类的不断进步使得人们在追求高科技的同时却忘记了自然本身的无穷力量。越来越高的大楼，越来越发达便利的交通，相反的却是城市越来越差的生活环境。在灰色的钢筋水泥世界里生活久了，人们是否会怀念那晴朗的蓝天，向往呼吸新鲜的空气和在那充满生机的绿色大自然世界里生活。

We want to hold a green Olympic Games ,so everyone should do something

useful to protect the environment ,whether it is big or small.

We should do something to stop people from doing bad things to the

environment .We should put rubbish into dustbins instead of throwing it about.

Everyone must care for flowers ,grass and tress in public .We shound collect

things like paper ,plastic bags our neighborhood as well ,it’s necessary to

plant more trees every year .

It is everyone’s duty to make our neighborhood much better with our hands

minds .Let’s make a contribution to protecting the environment and the Plympic

Games successfully.

今天妈妈说要带着我去小公园玩。

妈妈刚刚说的时候的时候很开心，说：“小公园以前美丽又可爱，充满了小孩子们的欢声笑语，现在小公园已经……”妈妈好像不敢说一样，我疑惑地问妈妈：“妈妈您怎么了?为什么不说了呢?现在小公园是什么样子的呢?”妈妈笑着说：“孩子，你去了就知道了。”我们到了小公园，我张着大大的嘴巴，惊讶的问：“妈妈，妈妈，为什么小公园是这个样子的，为什么小公园里面到处都是又脏又臭的的垃圾呀?”妈妈叹了口气说：“因为人类一直扔垃圾，并且也没有人来清理这些垃圾。”我听了，对妈妈说：“他们不清理，我们来清理。”妈妈看着我说：“我的女儿真的长大了。”我四处张望，看看小公园里有没有扫帚，我看到小公园的门口就有三把扫帚，我对妈妈说：“妈妈快看哪!那里有三把扫帚。”说完后，我和妈妈一起拿着扫着，戴上口罩，开始清理小公园，路过的人看见了，好像在想：这么小的孩子都来清理小公园，我可不能输给她。然后他也带上口罩，拿起扫帚，跟着我们一起扫，经过我们的努力，我们终于把小公园清理干净了，小草渐渐地站起来，小花开出了美丽的花朵，妈妈高兴地说：“现在的小公园跟以前一样美丽!”

所以，我们要保护环境，这样我们的生活才能过得更幸福。

从2008年6月1日起，国家将禁止商家免费提供塑料袋，掀起全国“拒塑”的环保运动。假如你是李华，准备以“What Can We Do for the Environment” 为题，写一篇保护环境的英语演讲稿。

内容包含：(1).在购物时用布袋子替代塑料袋; (2).尽可能地再利用使用过的课本;(3).离开教室应关灯;(4).最好走路或骑自行车上学; (5).简述理由：保护环境，减少污染，节约能源等. 参考词汇：布袋子cloth bag塑料袋plastic bag保护protect能源energy污染pollution课本textbook

What Can We Do for the Environment our environment is becoming worse and worse, what can we do for the environment? I think each of us can do a little bit to help with this problem. The first thing we can do is to use cloth bags instead of plastic bags when we go shopping. It helps to protect the environment. The second thing we can do is to reuse the old textbooks as possible as we can. We should also never forget to turn off the lights when we leave the classrooms in order to save energy. What’s more, it would be better if we walk or ride a bike to school. We should try our best to reduce pollution and waste. In fact, even the simplest everyday activities can make a real difference to the environment. I believe we can make the world a better place to live in.

3.为了保护地球有限的资源，我们应该采取什么措施呢?请根据下面的提示写一篇约80词的短文，短文开头已经给出。提示词; 1.save water, the source of life, protect drinking water, stop polluting, make full use of it; 2.save electricity, crucial, turn off, other electric machines; 3. save forests, useful ,stop cutting down; 4.recycle useful rubbish, save resources

参考作文：

Although the world develops much faster and better, the resources on the earth get fewer and fewer. In order to protect them ,something must be done. Save water. Water is the source of life. No water, no life. So it’s very important for us to do so .Not only should we protect drinking water and stop polluting it, but also make full use of it. Save electricity. It is crucial. We can’t imagine what the life will be like without it. Everyone should do his best to save electricity. Don’t forget to turn off lights or other electric machines when we finish working. Save forests. They are useful .Please stop cutting them down and use recycled paper instead. Make our world a green one to live in. Recycle useful rubbish. Plenty of rubbish can be recycled like cans , paper, bottles, and so on. We can save resources in this way. I believe we can make the world a better place to live in.

参考译文：

尽管世界发展更快、更好,地球上的资源得到越来越少。为了保护他们,必须得做点什么。要节约用水,水是生命之源。没有水,就没有生命。所以这对我们来说是非常重要的。我们不仅应该保护饮用水和停止污染,但也充分利用它。节约用电。它是至关重要的。我们无法想象没有它的生活将是什么样子。每个人都应该尽力节约用电。别忘了关掉灯或其他电动机器当我们完成工作。拯救森林。他们是有用的。请停止切割下来,转而使用再生纸。让我们的世界一个住在绿色。回收有用的垃圾。大量的垃圾可以回收罐、纸、瓶子、等等。以这种方式我们可以节省资源。我相信我们可以让世界变得更美好。