class________name:_______________group:__________________assessment:___________ unit 4 global warming period 4 using language learning aims: 1. know well the global warming 2. enable the students to talk about different sources of energy. important point: learning about effect the global warming brings human being. difficult point: to improve the skills of reading. 使用说明及学法指导：1. 通过阅读课本p30，完成预习案。2. 完成时间：30分钟。预习案 previewing case task1重点单词及短语翻译代表……一方______________提倡; 主张_________ 承诺；交托___________贡献___________ 忍受______________________ 污染______________等等_____________只有________________
