本单元的写作项目是写一份环保解决方案，符合倡议书的写作范畴。
[基本框架]
1．开头(the beginning)——需要解决的问题
2．主体(the body)——详细介绍解决问题的方法
3．结尾(the ending)——提出倡议
[常用词块]
1．turn off the lights关灯
2．face the challenge of the global warming面对全球变暖的挑战
3．raise the awareness of environmental protection提高环保意识
4．get worse and worse/get from bad to worse变得越来越糟
5．the destruction of the environment环境的破坏
6．bear the responsibility to protect the environment承担保护环境的责任
