As we know ,the environment around us is getting worse and worse. Some chemical factories always pour waste water into the stream. And they also produce terrible gas. In some places, some people even have no clean water to drink. So I think we must do something to protect the environment.

How to protect the environment? First, as a student, we should use cloth bags instead of plastic bags when we go shopping. Second , we had better reuse the old textbooks as possible as we can. Third, we should never forget to turn off the lights when we leave the classrooms. In a word , we must try our best to protect our environment. I believe we can make the world a better place to live in.

题目分析：这是一篇根据所给提示写一篇叙事完整，语句规范的作文。这就要求在动笔前要仔细分析所给要求，考虑出正确写作思路。

【亮点说明】这篇文章语言规范，叙事清楚，词汇及时态运用正确，能够把内容叙述清楚，做到了首尾呼应，是一篇不错的文章。