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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，增强人们的忧患意识和社会责任感。.
2、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。4.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 difficult points1. Key poi
3、nts: 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。. Learning strategies 能自己归纳总结所学的知识。 学会利用关键词复述课文。 学会运用所学
4、知识，宣传生活中的常识。. Teaching aids与污染相关的图片；词性辨析的试题；幻灯片。. Teaching procedures Stage(time period)InteractionpatternsTeacher activityStudent activityRemarks1Getting students ready for learning（5 mins)Class activityStep 1: Let the Ss fill in the blanks with the correct forms of the given words.T: Hello, boys a
5、nd girls. Please fill in the blanks with the correct forms of the given words.1）The man working in a _ factory goes deaf because of the loud _.(noise / noisy)2）Burning coal can _ the air, and we call it air _. (pollute / pollution)3）Using too many chemicals in the land can cause _food and its bad fo
6、r peoples _. (health / healthy / unhealthy)4）Strong light is _ to our eyes and does great _ our body. (harm / harmful)5）Mrs. Zhou can hardly _ because of the bad air. And she often coughs day and night, out of _. (breath / breathe)T: OK, now lets check the answer.Fill in the blanks with the correct
7、forms of the given words.S1: noisy and noiseS2: pollute and pollutionS3: unhealthy and healthS4: harmful and harmS5: breathe and breath 学生在做“用所给单词的适当形式填空”这种题型时，稍有困难。因此，教师要进行引导。先通过二选一的方式简化题目难度，再让学生体会到词性不同，用法也不同。2Lead-in (3 mins)Group work Let the Ss list what they have learnt in this topic with their
8、 group members, and then finish Grammar and Functions.T: Wonderful! Now list what you have learnt in this topic with your group members, and then finish the Grammar and Functions.T: If you have finished, hands up to let me know. OK, lets check the answers. List what they have learnt in this topic wi
9、th their group members, then finish Grammar and Functions.3Pre-reading (5 mins)Class activityCheck the Ss HMK and encourage the Ss to read their passages about pollution to the class.T: Please take out your homework. I have checked your work. Most of you did very well. But a few students have to imp
10、rove it. I believe you will be better next time. Now I want some Ss to share your work with us. Any volunteers?S1: Water pollution is very serious and we can find it almost everywhereRead out their passages to the class.4While-reading (10 mins)Individual workPair workStep 1: Let the Ss scan 1a and f
11、ind the main idea of this passage.T: You are right. Pollution is harmful to peoples health. Now, please read 1a as quickly as you can and try to get the main idea of this passage.T: OK. What is the passage about?Step 2: Let the Ss read the passage again and work in pairs to complete the table on Pag
12、e 34. Then check the answers in pairs.T: Yes, please read the passage carefully and complete the table on Page 34. You can discuss the answers with your partner.T: Lets check the answers together.Read 1a quickly and find the main idea of this passage.Ss: The harm of different pollutions.Read the pas
13、sage again and work in pairs to complete the table on Page 34. S1: gas, oil and coalS2: sore eyes and breathing problemsS3: litter everywhere, use too many chemicalsS4建议：阅读部分可以采取两个步骤，一是泛读，二是精读。泛读让学生了解文章大意，精读可以让学生注意段落、语句之间的逻辑关系，培养学生写作思维能力。5Post-reading (10 mins)Individual work Individual workStep 1:
14、Let the Ss read the article sentence by sentence and find the key points they think. Write them down on the Bb and encourage the Ss to explain them. T: Now read the article sentence by sentence, circle the key phrases you think and try to explain them in your own words. T: Volunteers? Step 2: Let th
15、e Ss finish 1b.T: Very good. You learnt so well. Now please finish 1b yourselves.T: OK, lets check your answers together.S1: are harmfulS2: hearing loss S3: go, because ofT: Well done!Read the article, circle the key points and try to explain them. S1: “including” means “包括” S2: “with the increase in population” means “随着人口的增长”S3: Finish
