It is reported that a supermarket has offered to exchange one empty moon cake box for three eggs. This is an excellent plan with many benefits for everyone.

It has been generally accepted for years that packing causes huge problems for both people and the environment. Moon cake boxes are a good example because after people eat the cakes they just throw the boxes away. Some people place the boxes carefully in bins but others just dump them in the street without thinking about the pollution they are causing.

The supermarket’s offer makes a difference in many ways. Customers will get something almost free of charge, the supermarket can recycle the packaging, and the environment will suffer less rubbish.

The problems caused by packaging are serious. Offers like this, which involve recycling, are an effective way of dealing with them.

题目分析：题目要求用英语写一篇短文，向校英文报Environment专栏投稿。写作可以从三方面着手，包装带来环境问题；回收包装的好处；自己的看法。写作注意条理性，注意拼写、标点、时态和语法等的正确使用。

【亮点说明】范文使用了很多重要语法知识，如：主语从句It has been generally accepted that...，原因状语从句because after people eat the cakes...，定语从句they are causing和which involve recycling，非谓语动词caused by packaging等；语法知识掌握扎实。

范文还使用了短语both...and，makes a difference，in many ways，free of charge，an effective way of，deal with等，做到了熟练运用英语知识。