环境保护和自然灾害 保护环境 开头句： 1. Pollution is one of the biggest problems in the world today. 2. The world population is rising so quickly that the world has become too crowded. 中间句： 1. In many places, rubbish is thrown into lakes and rivers. So many of them are polluted. 2. In some cities, the air is filled with pollution. 3. This makes people ill. Like people, animals are harmed by pollution. 4. If we continue to do this, life on earth cannot survive. 5. If we do not act to protect the environment, more living things will die from pollution. 6. The earth is our home and we have the duty to take care of it for ourselves. 7. Luckily, more and more people have realized these problems. 8. The government has many laws to protect the environment. 9. In my opinion, things like glass, plastic and paper should be separated into different groups and then recycled. Even old clothes and shoes can be recycled. 10. People should not be allowed to cut down trees. Otherwise, they will be punished. 11. As a citizen(公民，市民), we should not drop litter carelessly. 12. We’d better plant more trees every year. 13. It’s necessary for us to clean up(打扫) the parks and other public places from time to time. 结尾句： 1. Remember that everyone can do something to make a difference.(产生影响，产生差异) 2. I hope that our world will become more and more beautiful. 3. We have only one earth. 4. Protecting the environment is to protect ourselves.保护环境就是保护我们自己 自然灾害 开头句： 1. I was in the library when the earthquake started. 2. A snowstorm hit Beijing last Wednesday. 中间句： 1. I tried to run outside, but pieces of glass and bricks fell down. 2. Finally, the noise and shaking ended. 3. I screamed for help. 4. The weather was really terrible. 5. Suddenly, a strong wind came from behind. 结尾句： 1. Luckily, sb. found me and I was saved. 2. At last, we got on the bus and went home. 表示建议和采取行动的常用词组或句型： 1. act to do sth.=take action to do sth. 2. try our best to do sth. 3. had better (not) do sth. 4. We need to do sth. 5. It’s necessary for us to do sth. 6. I think we should do sth. 7. Perhaps we should do sth. 8. I hope sh. will do sth. 9. do something to make a difference 名言警句： 1. Actions speak louder than words.行动胜过语言 2. Where there is a will, there is a way.有志者事竟成 3. Many hands make light work.人多力量大 本文来源：https://www.wddqw.com/doc/9f890184bdeb19e8b8f67c1cfad6195f312be830.html