短语&句型破坏情况的行为以及影响:1. cut down砍伐2. pour waste water into...向.....里排放废水3. spit in public在公共场所吐痰4. throw litter around here and there随处扔垃圾5. throw away扔掉,扬弃6. be bad for/ be harmful to........有害7. become worse and worse变得越来越糟糕掩护情况的做法:1. turn off关掉2. clean up扫除;(清理)洁净3. call on招呼4. stay/ keep away from..远离.....5. start to do sth. 开始做某事6. start with......开始7. stop doing sth. 停止做某事8. prevent .. from polluting the environment 阻止....污染情况9. prevent .. from doing sth. 掩护.....免受.....10. make a contribution to... 为.....做孝敬11. had better do sth. 最好做某事12. try one's best to do sth. 努力做某事13. take measures/take action to do sth. 接纳措施/行动做某事14. It's our duty to do sth. 做某事是我们的责任总结:1. in one's opinion 依某人来看2.in a word总而言之3.so that以便4. make a difference起作用，有影响5. make the world a better place to live in让世界酿成一个更适合居住的地方高分佳句开头句:1. Today, the quality of our environment has become an important problem.2. It's everyone's duty to love and protect the environment.3.It is very important to take care of our environment.4. It is clear that air pollution and water pollution are becoming worse and worse.中间句:1. We should not spit in public places/ cut down trees/throw litter onto the ground.2. As junior high students，we should take some measures to stop the pollution.3. We can reduce air pollution by riding bicycles. And we'd better plant more trees to protect the natural environment.4. It's better for us to put rubbish into the rubbish bin. In this way ,we can keep our city clean.5. We should do some little things around us. Don't throw rubbish and stop using plastic bags. Call on the people around us to protect the environment and the govern-ment to prevent thefactories from polluting the environment.末端句:1.I believe we can make the world a better place to live in,2. In my opinion,I'll try my best to make our city cleaner and more beautiful.3. In a word . evervone can .do something to ( make a contribution to ) make( making )a difference.4. If everyone tries his best to protect the environment , our city/ world will becomenicer and cleaner !