当然，我可以帮助你。以下是一篇关于“环保”的英语四级作文的开头段落：

"Environmental issues have become one of the most pressing problems in modern society, and they have attracted increasing attention from people all over the world. With the rapid development of industry and agriculture, pollution has become more serious than ever before. The air we breathe, the water we drink, and the land we rely on for food production are all being contaminated by various pollutants. Therefore, it is high time that we take effective measures to protect our environment and ensure sustainable development."

请注意，这是作文的开头部分，你可以根据具体题目和要求来继续扩展内容。希望这对你有所帮助！