教学准备 1. 教学目标 (一) 知识与技能1. To learn the following words and expressions.bottom, coal, p ublic, ugly, cost, advantage, method, cruel, harmful, afford.2. To understand the pasage on Page 99.(二) 过程和方法3. To get a general knowledge of pollution by reading and role-play.4. To know about how to reduce pollution through discussion.(三) 情感态度和价值观5. After learning this part, every student will be aware of the serious situation of pullution and determined to take action to protect our ea
