范文:Preserving Our Environment

「要求」

　　题目：以“Preserving Our Environment”为题，写一篇征文。要求按如下三条作为文章的提纲：

　　人类正在污染环境。

　　污染对人类的危害。

　　如何保护环境。

　　「范文」

　　Preserving Our Environment

　　Man is slowly polluting his environment. He dirties the air with waste gases； he poisons the water with chemical wastes； he damages the soil with fertilizers.

　　Pollution does great harm to man. As we know， water， air and soil are necessary to man's survival. Polluted air， water and soil make people sick and even cause deaths. Environmental pollution is becoming one of the most serious problems that mankind faces.

　　Now it's high time drastic action was taken. First， we should make the public aware of the dangers caused by pollution. Second， we should take pollution control measures to reduce pollution. Third， we should keep our pollution under control. After all， the earth is our home. We must take care of it for ourselves and our descendants.

　　Never miss deadlines. Never.

　　「评语」

　　层次分明，条理清晰，是这篇文章一大优点。每段围绕一个中心，主题明确。“first， second， third， after all”是提示层次的常用词汇。