Unit 2 Saving the Earth-Topic 1 Pollution has caused too many problems.-Section B-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：700a6).zip

1、Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems . Section B Watch the flash, then answer the questions below. Answer the questions. 1. Does Bruce look well? 2. Whats wrong with him? 3. How long has he been like this? 4. Has he seen a doctor? No, he doesnt. Two days. He looks w

2、eak. He has a headache and a cough. = He has got a pain in his head. /He has been like this for two days. No, he hasnt. / Not yet. pain n. 疼，痛，痛苦 Kangkang was going to leave the West Hill. He met Mrs. Zhou. They had a talk. Kangkang asked Mrs. Zhou some questions. What questions did Kangkang ask? B.

3、 Listen again and match each question above with an answer below. a. Not yet. b. Ive been like this since last week. C. Its difficult for me to breathe. d. Oh, yes. C b a d 1b A. Listen to 1a and check the questions you hear. Question Answer 1. Whats wrong with you? _ 2. How long have you been like

4、this? _ 3. Where have you been? _ 4. Have you seen a doctor? _ 5. Have you noticed the dead fish in the river? _ 1c Read 1a and answer the questions. 1. What caused Mrs. Zhous problems? 2. What will Kangkang do? 3. Do you have any other ways to solve Mrs. Zhous problems? The bad air and too much noi

5、se. He will write to the newspaper about these problems. 2 Choose the correct words to complete the passage. Dear editor, Im writing to say something about the chemical factory near my house. The factory causes _ (too many/ too much) problems. First, it produces terrible gas, and it is hard for us t

6、o _ (breathe/ breath). Whats worse, the factory makes a lot of noise. We cant sleep well at night. It also pollutes the river nearby. Now there are many _ (die/ dead) fish in the river. I think people should care for these problems and I hope the government will solve them soon. Yours, Kangkang too

7、many breathe dead The factory causes too many problems. too many + 可数名词复数 e.g. There are too many people in the supermarket. I dont want to go there any more. too much + 不可数名词 e.g. I am busy. I have too much work to do. much too + adj./ adv. e.g. Its much too cold today. Many people stay at home ins

8、tead of going out. 1a Look, listen and say. Its difficult for me to breathe. 我呼吸很困难。 breathe v. 呼吸 e.g. He could hardly breathe because of the lung cancer. breath n. 呼吸 e.g. She took a long slow breath to calm down. Its + adj. + for sb. to do sth. e.g. Its important for us to learn English well. Its

9、 easy for him to solve this problem. 3a Look at the pictures and read the words and phrases, paying attention to the sounds and stress. soil pollution water pollution noise pollution air pollution litter light pollution ( ) ( ) ( ) ( ) ( ) ( ) A B C D E F F C D A B E soil n. 土壤，土 地 Example: People u

10、se chemicals too much in their fields, /and soil pollution causes unhealthy food. 1. People pour waste water into rivers and lakes, /so _ is almost everywhere in China. 2. _ makes people sick. /It causes breathing problems and even cancer. 3. In some cities, /theres too much _ caused by many cars. 4

11、. _ is harmful to birds. /Also, /when we use too many lights at night, we waste energy. 5. _ makes a mess of our environment, /so people shouldnt throw it around. 3b Complete the sentences with the words and phrases in 3a. Then read them aloud, paying special attention to the pronunciation, liaison

12、and pause. water pollution Air pollution noise pollution Light pollution Litter Light pollution is harmful to birds. harm v. & n. 危害，伤害，损害 harmful adj. 有害的 e.g. It is harmful to animals. = It does great harm to animals. be harmful to = do harm to 对有害 单项选择 ( ) 1. There are _ books in the shop. I dont

13、 know which one to choose. A. too many B. too much C. much too D. too ( ) 2. Dont smoke. Its _ to our health. Sorry, I wont do it again. A. harmB. harmful C. harmsD. harmed ( ) 3. He has a headache. He feels difficult _. A. breathe B. breath C. to breathe D. to breath A B C 单项选择 ( ) 4. She is so noi

14、sy that I cant _ her. A. seeB. know C. bearD. understand ( ) 5. How long have you _ this? For a week. A. likedB. been C. been likeD. like ( ) 6. If you are always _, it will be bad for your health. A. in a good moodB. in a bad mood C. in good healthD. in need C C B 1. Use the correct stress, pronunc

15、iation, liaison and pause while reading aloud. 2. Know the differences between Simple Past and Present perfect. Ive got a pain in my throat. Pollution has caused too many problems. 1. Some words: breathe, pain, produce, chest, awful, bear, breath, soil, harmful 2. Some phrases: have got a pain in, b

16、e harmful to, too many, too much 3. Some sentences: (1)How long have you been like this? (2) Whats worse, the factory makes too much noise. Homework 1. Read 1a. 2. Read 3a and 3b, paying attention to the stress, pronunciation, liaison and pause. 3. Finish Section B in your workbook. 4. Preview Secti

17、on C. Thank you. 1 Section B . Material analysis 本课是九年级第二单元第一话题的第二课时，主活动是 1a 和 3a。1a 通过 Mrs. Zhou 讲述自己的身体状况和生活环境 ，引出污 染对人们的健康和生态环境所产生的危害，同时也道出了 污染产生的原因。1b 通过“听回答问题再听核对答案”的模式来训 练学生的听力技能。2 与 1a 形成很好的呼应，通过康康向报社反映西山污染情况的信件，呼吁政府和大众关注环境问题，要求学生 掌握词性的转换，强化 1a 中的语言知识。3a 和 3b 通过图片和简介来描述不同种类的污染以及带来的危害。在学习这些污染的

18、同时， 也兼顾了单词的重读，句子的连读、停顿及语调 等语言知识。通过学习本课，引导学生关注环境问题，了解各种污染类别以及带来 的危害，树立正确的环保意识。 .Teaching aims 1.Knowledge aims： 掌握本课的重点词汇和短语，正确运用现在完成时进行问答。 2.Skill aims: 能通过观察课文插图来预测课文内容。 能听懂用现在完成时表达的对话。 能朗读和表演有关环保的对话。 能正确运用连读和停顿的技巧，使发音流畅，富有韵律感。 2 3.Emotional aims: (optional) 引导学生关注环境问题，树立绿色环保意识，增强忧患意识和社会责任感。 4.Cult

19、ure awareness: (optional) 通过谈论环境问题，让学生了解不同种类的污染及其危害。 . The key points and difficult points 1. Key points: Words and phrases: pain, produce, awful, bear, harmful, chest, editor, breathe/breath, soil get a pain in, whats worse, too much noise, too many problems, breathing problem, be harmful to, make

20、a mess of, throwaround Sentences: Its difficult for me to breathe. Ive got a pain in my throat. Its really awful. A: How long have you been like this? A: Have you seen a doctor? B: Ive been like this since last week. B: Not yet. Grammar: Present Perfect 的问答。 2. Difficult points： 能在不同语境中，正确判断单词的不同词性。

21、 3 在朗读中，能正确地把握连读和停顿的技巧。 . Learning strategies 通过 1a，教会学生善于利用插图理解有关污染的对话。 通过 2，训练学生在不同的语境中学会转换词性，并拓展学生的词汇量。 通过 3a，引导学生通过观察图片分析和了解不同的信息。 通过 3b，要求学生掌握连读，停顿的发音技巧，反思自己的发音中的问题。 . Teaching aids 单词卡片（如：breathe/ breath, pain, harmful/harm） ；关于污染的图片或者幻灯片；录音机；小礼品若干等。 . Teaching procedures Stage (time period) I

22、nteraction patterns Teacher activityStudent activityRemarks 1 Getting students ready for learning （2 mins) Group work Guide the Ss to discuss different kinds of pollution in groups and share the answer together. T: How many kinds of pollution do you know? Discuss different kinds of pollution in grou

23、ps and share the answer together. 该环节是对前一课时所布置 作业的检查，让学生通过查 找资料，倾听同伴的讲解等 方式，提高获取信息的能力 和意识，引导学生从不同渠 4 S1: Air pollution S2: Water pollution S3: Litter S4. S1: Air pollution S2: Water pollution S3: Litter S4. 道关注社会问题。 2 Lead-in (5 mins) Class activity Let the Ss look at the pictures in 3a on page 30 a

24、nd guess the meaning and pronunciation of “soil”. Ask them to pay attention to the types of pollution. T: Look at these pictures, what kinds of pollution are these? S1: Air pollution S2: Water pollution S3: Litter S4: Light pollution S5: Noise pollution Guess the meaning and pronunciation of the new

25、 words according to the pictures and the teachers descriptions. S1: Air pollution S2: Water pollution S3: Litter S4: Light pollution S5: Noise pollution 先让学生根据图片猜测短语 的意思，此处只呈现前五幅 图片，在下一环节再用“soil pollution”引入听前活动，并 以此教授部分新的单词和短 语。 3 Pre-listening (5-7 mins) Class activity Show the picture of soil pol

26、lution, teach the new words and check the answers of 3b. Pay attention to the pronunciation, liaison Look at the picture of soil pollution, learn the new words and try to finish 3b. Pay 教师应利用介绍土壤污染的 契机，教授新单词、短语， 同时示范句子的连读和停顿， 5 and pause while reading. T: Look at this picture, what kind of pollution

27、 is this one? (Lead the Ss to pronounce it.) S6: Soil pollution. T: Right. People use too many chemicals in their fields, /and soil pollution causes unhealthy food. The food is harmful to our health. (Teacher write down the words and phrases on the Bb.) T: Now try to fill in the blanks in 3b with th

28、e words and phrases in 3a. T: Now lets check the answer. S1: water pollution S2: air pollution S3: noise pollution attention to the pronunciation, liaison and pause while reading. S6: Soil pollution. S1: water pollution S2: air pollution S3: noise pollution 为训练学生流畅的口语打好 基础。 6 S4 T: OK, lets read the

29、 sentences together. Pay attention to the pronunciation, liaison and pause. (Teacher can give an example if necessary) S4 4 While-listening (5-7 mins) Individual workStep 1: Show a picture of the polluted West Hill, let the Ss listen to 1a once and tick the questions they hear in part A of 1b. Then

30、check the answers together. T: As we know, the West Hill has changed a lot. Look at this picture, what pollution can you find in the picture? Ss: Air pollution, water pollution, noise pollution T: Right. Whatever the pollution is, it is harmful to peoples health. Mrs. Zhou gets Look at a picture of

31、the polluted West Hill, listen to 1a once and tick the questions they hear in A of 1b. Then check the answers together. Ss: Air pollution, water pollution, noise pollution 在环节与环节的过度上，要 注意自然流畅，是顺理成章 的进入下一个步骤，而不是 直接切入。因为过渡语既能 起到承上启下的作用，又能 抓住学生的注意力。 7 Individual work a pain in her chest because of the

32、bad air. Now listen to the dialog between Kangkang and Mrs. Zhou and tick the questions you hear to finish part A in 1b. T: OK, lets check the answers. S1: Whats wrong with you? S2: How long have you been like this？ S3: Have you seen a doctor? S4: Have you noticed the dead fish in the river? Step 2:

33、 Get the Ss to listen again and match the questions with the right answers in part B of 1b. Then check the answers together. T: Great. Listen again, match the questions with the right answers in B. S1: Whats wrong with you? S2: How long have you been like this？ S3: Have you seen a doctor? S4: Have y

34、ou noticed the dead fish in the river? Listen again and match the questions with the right answers in B of 1b. Then check the answers together. 8 S5: No.1 is c. S6: No. 2 is b. S7: No. 3 is a. S8: No. 4 is d. S5: No.1 is c. S6: No. 2 is b. S7: No. 3 is a. S8: No. 4 is d. 5 Post-listening (17 mins) I

35、ndividual workStep 1: Get the Ss to read 1a and answer the questions in 1c. T: Now read 1a by yourselves and answer the questions in 1c. . T: OK, what caused Mrs. Zhous problem? S1: Pollution. The chemical factories produce terrible gas, make too much noise and pour waste water into rivers. T: What

36、will Kangkang do? S2: He will write to the newspaper about Read 1a and answer the questions in 1c. S1: Pollution. The chemical factories produce terrible gas, make too much noise and pour waste water into rivers. S2: He will write to the 通过完成 1c 的读后任务， 进一步理解对话内容。在完 成该任务时，如果答案不能 直接从课文中找出，要引导 学生学会用自己的

37、语言总结 和归纳答案，允许有不同的 表达方式。以 1c 的第一题 为例（What caused Mrs. Zhous problem?）简单的回 答就是 pollution。如果要答 案具体化，就必须先引导学 生找出周夫人的问题，再找 9 Class activity and Group work the problems. T: Do you have any other ways to solve the problem? S3 Step 2: Let the Ss read 1a carefully and underline the difficult points including

38、 words, phrases and sentences. Then lead the Ss to ask their classmates and teacher for help. Write down the points they cant understand on the Bb. T: First , read 1a and underline the difficult points T: If there are some difficult points you cant understand, please ask your classmates for help. If

39、 all the group newspaper about the problems. S3 Read 1a, find the difficult points, and try to solve them with the help of all kinds of resources. 出原因，最后用自己的话归 纳出答案（The chemical factories produce terrible gas, make too much noise and pour waste water into rivers） 。 学生能够正确提出问题，也 是能力的体现。教师需要引 导学生，一步一步

40、朝着正确 答案去思考，可以运用课文 中的文本语言，也可以拓展 例句提供新的语境，还可以 根据已学知识理解新知识 （以短语“get a pain in”为 例， pain 是本课新单词， 要理解短语的意思和掌握短 语的用法就会比较难， 因 10 Group work members cant solve the problem, I can give you some advice. Ss: How to use “get a pain in”? T: We can also say like this “I have a sore throat”. Can you understand its

41、 meaning? Ss: Yes. （Teacher touches one of his legs and says.） T: I get a pain in my leg. “Get a pain in” can be added “a part of a body” after the proposition. T: Whats the Chinese meaning of it? Ss: It means “某处疼” in Chinese. Ss . Ss: How to use “get a pain in”? Ss: Yes. Ss: It means “某处疼” in Chin

42、ese. Ss . Read 1a in roles, and then act out the dialog. Pay attention to 此，教师可以通过“I have a sore throat”帮助学生理解意 思。 用举例“I get a pain in my leg”同时捂住左腿，帮 助学生观察该短语的用法） 。 11 Individual work Step 3: Let the Ss read 1a in roles, and then act out the dialog and pay attention to the pronunciation and intonat

43、ion. T: Now read 1a in roles, and then act out the dialog. Pay attention to the pronunciation and intonation. After that, we will have a competition to see which group performs best. The best one wins the award. Step 4: Lead the Ss to scan the material and choose the correct words to complete the le

44、tter in 2. T: Kangkang has written a letter to the newspaper about pollution, but some words are missing. Can you help him finish the letter with the given words? the pronunciation and intonation. There will be performance competition among the groups. The best one wins the award. Scan the material

45、and choose the correct words to complete the letter in 2. Ss: Yes 课文朗读是培养学生的语感， 训练语音语调的方法之一。 为了让学生目标性更强，更 加严格的要求自己正确发音， 学会合作，教师采用（以六 人组为例）组内三人扮演一 个角色，进行对话；并采用 一些竞争机制，激发学生的 斗志和参与课堂活动的热情， 维护小组的集体荣誉感。 在角色扮演前，教师选择率 先做好准备的小组，让他们 选择任一小组进行挑战，胜 利者将得到老师的礼物（或 者积分） ，落后组再选一组， 循环挑战；也可以另外选择 两组进行两两 PK。 12 Ss: Yes

46、T: Now lets check the answers together. S1: too many S2: breathe S3: dead T: Great. Youd better pay more attention to the difference between “too many” and “too much”. Use the right forms of the words according to different content. S1: too many S2: breathe S3: dead 6 Summarizing and assigning homew

47、ork (5 mins) Class activity Step 1: Let the Ss go over what they have learned this period. Sum up the key points. T: Now lets sum up what we have learned today. You can begin with the words and the phrases. Step 2: HMK: Let the Ss to choose one type of pollution and collect some information about it

48、 according to the questions in 3 on Sum up and present the key points one by one. S1: get a pain in S2: be harmful to S3 Choose one type of pollution and collect some information about it according to the 在总结本科所学时，明确复 习的内容和方向，让学生在 罗列知识时更有系统性，养 成在头脑中建构知识框架的 习惯。 作业的布置是为学习 Section C 打好基础，提供 素材。 13 page

49、 32. 1.What is pollution? 2.What makes thepollution? 3.What problems does it cause? 4.What can be done to solve these problems? questions in 3 on page 32. . Blackboard design Pollution has caused too many problems. Section B Words : pain, produce, awful, bear, harmful, chest, breathe/breath, Soil, e

50、ditor Phrases: get a pain in, whats worse, too much noise, too many problems, breathing problem, be harmful to, make a mess of, Sentences: Its difficult for me to breathe. Ive got a pain in my throat. Its really awful. A: How long have you been like this? B: Ive been like this since last week. A: Ha