1Unit 6 electricity More practice must not3. We should_ when we use electricity.4. 快速阅读 83页文章,思考文章的主要内容。_25. 再读文章,完成书上练习,小组交流评议。三、拓展延伸1. 观看“地球一小时”宣传片。2. 阅读教材 84页 Culture corner内容,回答问题:When and where did Earth hour start?_What do people do during Earth hour? Why?_ When do we have Earth hour today?_ Would you like to take part in?_ 四、要点归纳总结 must; must not的用法。五、拓展提高你还知道那些家用电器的使用方法和注意事项吗?请写下来。总结反思:1. 通过本节课的学习我最大的收获:2. 感到自己有待加强的是: