写作思路：首先可以开篇点题，直接给出文章的主旨，接着表达自己的想法以及观点，用举例子的方式来进行阐述论证自己的看法，中心要明确等等。
We all know that biological pollution is very harmful. There are many different types of pollution in this world.
我们都知道，污染对生物有很大危害。在这个世界上，有许多不同类型的污染。
For example: water pollution, air pollution, noise pollution and so on.
Water pollution can make people sick or even die. Dirty air can increase the risk of lung cancer. Noise pollution can cause insomnia. People's health will decline.
水污染会使人们生病，甚至死亡。脏空气会使患肺癌的几率上升。而噪音污染会让人失眠。人们的健康水平会下降。
In my opinion, people should take measures to protect the environment.
在我看来，人们应该采取措施去保护环境。
Recently, not only government departments, but also individuals have participated in environmental protection. This is a good phenomenon. The river is clean and the air is fresh. People also realize the importance of environmental protection.
最近，不仅仅是政府部门，个人也参与到环保中去。这是个好现象。河流干净了，空气清新了，人们也意识到环保的重要性。
However, these are far from enough. The problem remains.
然而，这些还远远不够。问题依旧存在。
Not all the problems have been solved. Some factories still discharge sewage into rivers and toxic gases into the sky.
不是所有的问题都得到了解决。一些工厂依旧往河流里面排放污水，向天空排放有毒气体。
We should bear in mind that environmental protection requires everyone's efforts.
我们应该谨记环境保护需要每个人的努力。
作文思路：通过阐述环境污染，说明造成的严重后果。作文要点：着重突出环境污染造成的严重后果。
由于人们对工业高度发达的负面影响预料不够，预防不利，导致了全球性的三大危机：资源短缺、环境污染、生态破坏。
Due to people's lack of expectation of the negative impact of highly developed industry and adverse prevention, there are three global crises: shortage of resources, environmental pollution and ecological destruction.
环境污染指自然的或人为的破坏，向环境中添加某种物质而超过环境的自净能力而产生危害的行为。
Environmental pollution refers to natural or man-made destruction, adding a certain substance to the environment and exceeding the self purification capacity of the environment.
由于人为因素使环境的构成或状态发生变化，环境素质下降，从而扰乱和破坏了生态系统和人类的正常生产和生活条件的现象。
Because of human factors, the composition or state of the environment changes and the quality of the environment declines, which disturbs and destroys the ecosystem and the normal production and living conditions of human beings.
扩展资料
污染特点——
环境污染是各种污染因素本身及其相互作用的结果。同时，环境污染还受社会评价的影响而具有社会性。它的特点可归纳为：
（1）公害性，环境污染不受地区，种族，经济条件的影响，一律受害。
（2）潜伏性，许多污染不易及时发现，一旦爆发后果严重。
（3）长久性，许多污染长期连续不断的影响，危害人们的健康和生命，并不易消除。
本回答被网友采纳写作思路：从描述环境污染的坏处的写作目的、中心主旨入手，以使文章中心思想鲜明、深刻地表现出来，正文：
As we all know, pollution is very harmful to living things. In this world, there are many different types of pollution.
我们都知道，污染对生物有很大危害。在这个世界上，有许多不同类型的污染。
For example, water pollution, air pollution, noise pollution, etc. Water pollution will make people sick and even die, and dirty air will increase the probability of lung cancer.
例如：水污染、空气污染、噪音污染等等、水污染会使人们生病，甚至死亡、脏空气会使患肺癌的几率上升。
And noise pollution can cause insomnia. People's health level will decline.
而噪音污染会让人失眠。人们的健康水平会下降。
In my opinion, people should take measures to protect the environment. Recently, not only government departments but also individuals have taken part in environmental protection.
在我看来，人们应该采取措施去保护环境，最近，不仅仅是政府部门，个人也参与到环保中去。
This is a good phenomenon. The river is clean, the air is fresh, and people are aware of the importance of environmental protection.
这是个好现象，河流干净了，空气清新了，人们也意识到环保的重要性。
本回答被网友采纳(Suggested words and phrases: birth control, death rate, population explosion, food shortage)
The Problem of Human Population
It has been estimated that a thousand years ago there were less than 400 million people on earth. Today, however, the world's population has amounted to 5,000 million. What is worse, it keeps growing at a surprising speed. If this trend continues, the world's population will shoot up to 7,000 million by the year 2000. This is what we call population explosion.
The rapid development of science and technology is the main cause of population explosion. We can see that the population has been growing at a tremendous speed since the Industrial and Agriculture Revolution in 1650, which raised the people's standard of living, and the emergence of modern medicine in 1550, which lowered the people's death rate.
Population explosion will result in a lot of such problems as food shortage, housing shortage and unemployment. It is time that we acted quickly to carry out the policy of birth control otherwise, man's survival on the earth will be threatened.
你再改改就应该没问题了.
There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil. the polluted air does great harm to people’s health. The polluted water causes diseases and death. What is more, vegetation had been greatly reduced with the rapid growth of modern cities.
To protect the environment, governments of many countries have done a lot. Legislative steps have been introduced to control air pollution, to protect the forest and sea resources 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.本回答被网友采纳