How to protect our environment?

As time goes by, man is making the earth sick. People cut down too many trees and throw rubbish away here and there. Many factories pour waste water into rivers and lakes. As a result, a lot of rich land has changed into desert, leaving only sand. Many rivers and lakes are dead now. The air is becoming dirtier and dirtier. The temperature on the earth becomes higher and higher. Many people now are in bad health. I think everyone is supposed to reduce the waste. Recycling can not only protect the environment but also save money. We’d better not buy bottles or boxes which people can use only once. If we are greener people, our world will become more and more beautiful.

题目分析：这篇短文要求我们以怎样保护地球或环境为题，写一篇作文。在题目中给出了我们这篇作文的要点，主要包括三部分，一是目前人们的一些不明智的做法，这里面主要有三点，乱伐树林，乱扔垃圾，排放废物；第二部分是导致的问题，包括土地沙化，河水变脏，空气质量差和全球气温升高。第三部分是你给出的建议，这一部分是自己根据自己的观点随意发挥的。写作时注意使用正确的英语句式和短语，并且注意不要遗漏要点，同时还要注意层次分明。多使用好的句式和短语，使文章表达流畅，意思连贯。

【亮点说明】这是一篇优秀的范文。这篇作文内容完整，意思连贯，层次分明，语言表达准确，观点鲜明。将题目中所给的内容加上自己的看法，完整的表达了出来。首先作者先介绍了人们的一些错误的做法，这部分里较好的句式有As time goes by、throw rubbish away here and there等。接下来作者写的是人们这样做带来的后果，As a result, a lot of rich land has changed into desert, leaving only sand、The air is becoming dirtier and dirtier。最后，也是这篇短文的中心部分，作者给出了自己的建议，这些建议非常合理，也很切题。这里面较好的句式有I think everyone is supposed to reduce the waste、If we are greener people, our world will become more and more beautiful等。