1、Section D. Material analysis本课是第二单元第一话题的第四课时，主活动是 1a 和 Project。通过 Grammar 来巩固总结一般过去时和现在完成时的区别，通过 Functions 来复习重要的表达法。1a 按照 “总分总 ”的模式分别介绍了各种污染的成因及危害。通过完成文章后的表格，训练和提高学生获取信息的能力。教师还可以利用表格内容，引导学生整合信息复述课文，巩固课文内容。1b 属于同义转换练习。Project 部分培养学生动手动脑的能力，让学生运用收集的信息和所学知识，通过墙报的形式来宣传污染带来的危害，让更多的人关注环境污染，树立环保意识，增强人们的忧患
2、意识和社会责任感。.Teaching aims1.Knowledge aims： 掌握本课的重点词汇和短语。总结一般过去时和现在完成时的区别；复习本话题的重点表达法。2.Skill aims: 能读懂与环境污染问题有关的文章。能根据关键词复述课文。3. Emotional aims: (optional)通过了解各种污染带来的危害，帮助学生树立环保意识，爱护环境，保护地球。来源:gkstk.Com4.Culture awareness: (optional)通过学习，引导学生了解环境污染对人类健康有巨大的危害，不同种类的污染体现在不同的方面。. The key points and diffi
3、cult points1. Key points: Words and phrases: coal, create, blood, planet, in many ways, with the development of industry, high blood pressureGrammar: the differences between the simple past and present perfect2. Difficult points： 能根据关键词复述课文。能够进行同义句转换，用不同的短语表达相同的意思。来源:学优高考网. Learning strategies 能自己归纳
4、总结所学的知识。学会利用关键词复述课文。学会运用所学知识，宣传生活中的常识。. Teaching aids. Blackboard designPollution has caused too many problems.Section DFinish the exercises:1）The man working in a _ factory goes deafbecause of the loud _.(noise / noisy)2）Burning coal can _ the air, and we callit air _. (pollute / pollution)3）Using
5、too many chemicals in the land can cause_food and its bad for peoples _.(health / healthy / unhealthy)4）Strong light is _ to our eyes and doesgreat _ our body. (harm / harmful)5）Mrs. Zhou can hardly _ because of New words and phrases:coalcreatebloodplanetin many wayswith the development of industryhigh blood pressurethe dad air.来源:学优高考网And she often coughs day and night, out of _.(breath / breathe)
