Unit 2 Saving the Earth-Topic 1 Pollution has caused too many problems.-Section C-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：828b1).zip

Pollution has caused too many problems. Section C How did Peter feel last night ? Was he all right ? Did he have a good sleep ? What was it possible for him to do next ? Why couldnt he fall asleep ? Noise Not all people know noise is also a kind of pollution . n. 种类种类 v. 把把分类分类 There are all sorts of noises. a sort of , all sorts of They make us uncomfortable and unpleasant. adj. 使人不舒服的使人不舒服的 adj. 令人不快的令人不快的 Noise is bad for humans health.is harmful to be bad for be harmful to do harm to 不是所有的，表示部分否定不是所有的，表示部分否定 Noise pollution Underline the topic sentence of the passage in 1a. Try to find out the topic sentence to understand the content of a paragraph. Read 1a and complete the following tasks. Noise is also a kind of pollution and is harmful to humans health. 1. produce A. to hurt someone 2. deaf B. a type or a kind 3. print C. not be able to hear 4. harm D. to grow or make something 5. sort E. to put words or pictures onto paper using a machine2 1b Read 1a and match the words with their meanings. go deaf 变聋变聋 lose ones hearing 丧失丧失 听力听力 have hearing loss Watch the flash and answer questions in 1c. 2. How does noise harm peoples health? 3. Which phrase has the same meaning as “is harmful to”? 4. Which sentence shows that many teenagers hearing in America is not good? 5. Why is the hearing of many young Americans not good? 2. How does noise harm peoples health? a. People often _ _. b. People often feel _ and _. c. People may become _ or _. go deaf uncomfortable sick unpleasant deaf 3. Which phrase has the same meaning as “is harmful to”? 4. Which sentence shows that many teenagers hearing in America is not good? 5. Why is the hearing of many young Americans not good? Answer the questions. “do harm to”. Many teenagers in America can hear no better than 65-year-old people do. Because they always listen to loud pop music. a. Not all people know noise is also a kind of pollution. _ _ know(s) noise is a kind of pollution _ _. b. Many teenagers in America can hear no better than 65-year-old people do. In America, many teenagers hearing is _ _ _ 65-year-old peoples. Change the following sentences into the ones that have the same meanings. Not everyone / Some people as well as weak as 2 Complete the following passage with the correct form of each word. Noise is a kind of _ (pollute). Cars and machines produce too much noise. It makes people feel _ (comfortable) and _ (pleasant). It also does great _ (harm) to peoples _ (hear). Noise is very _ (harm) to humans _ (healthy). pollution uncomfortable unpleasant harm hearing harmfulhealth air pollution light pollution water pollution soil pollution noise pollution 3 Choose one kind of pollution and discuss it in groups. The following questions may help you. 1. What is pollution? 2. What makes the pollution? 3. What problems does it cause? 4. In what way is it harmful to peoples life? 5. What has been done to solve these problems? 4 Write a short report about a kind of pollution based on 2 and 3. The topic sentence of each paragraph is given below. pollution is pollution is harmful to peoples health The government has tried many ways to solve the problem Let us try our best to protect the environment and make our home clean, quiet and beautiful ! 1. Find out the topic sentence to understand the content of a paragraph. 2. Write a passage according to the topic sentences. 1. Some words: deaf, print, hearing, loss, recently, disturb,sort, uncomfortable, unpleasant, sentence, meaning 2. Some phrases: go deaf, lose ones hearing, hearing loss, no better than, do harm to 3. Some sentences: However, not all people know noise is also a kind of pollution is harmful to humans health. Homework Write a report according to Part 4. Thank you. Section C . Material analysis 本课是九年级第二单元第一话题的第三课时，主活动是 1a 和 4。学生通过阅读 1a，了解噪音污染是如何产生的，是怎样影响人们 健康的。1b 则训练学生通过语境，推断词义，选出与该词匹配的英文 解释。1c 先让学生找出主旨句，再通过找出细节来论证段落的中心思 想，以及通过语境判断重点词汇和句子的意思。2 继续谈论噪音污染， 通过选词填空的方式辨析单词的用法。3 让学生模仿 1a 来讨论其它 的污染。为了让学生顺利地完成讨论任务，还给出了可能涉及到的讨 论内容，很有指导性。4 是在 2 和 3 的基础之上进行的写作练习，让 学生学习运用中心句来组织文章。通过了解噪音污染，让学生进一步 了解各种污染的现状。引导学生关注环境问题，关注各种污染，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，初步感知定语从句。 了解与噪音污染有关的常识。 区别不同词性的单词的用法。 2.Skill aims: 能读懂有关环境污染的文章。 能看懂和听懂简单的英文解释。 能够理解段落中各个句子间的逻辑关系。 能用合适的英语对环境污染问题进行口头和书面语表达。 3. Emotional aims: 通过学习，加深对环境问题的认知，树立环保意识。 4. Culture awareness: 了解各种不同种类的污染，关注全球的环境现状。 . The key points and difficult points 1. Key points: Words and phrases: deaf, print, recently, sentence, meaning, hearing, loss, disturb, uncomfortable, unpleasant, sort, including, go deaf, do harm to/be harmful to, lose ones hearing/ have hearing loss, in noisy condition/ too much noise, no better than，not onlybut also, all sorts of environmental problems, Sentences: (1) Not all people know noise is also a kind of pollution and is harmful to humans health. (2) People who work and live in noisy conditions go deaf easily. (3) many teenagers in America can hear no better than 65-year- old people do Grammar: Simple past, present perfect. 2. Difficult points： ： 能根据所学内容，表达与污染相关的话题。 能区别使用不同词性的单词。 能大致理解含有定语从句的句子。 能正确理解和使用“no better than”, “do harm to”等短语。 . Learning strategies 能根据不同阅读材料，运用不同的阅读策略获取信息。 能积极地加入小组，合作探究，学会表达自己的观点。 能根据写作要求，搜集、准备有关污染和环保的素材。 . Teaching aids 与污染相关的图片以及视频、幻灯片；课文音频等。 . Teaching procedures 1Getting students ready for learning Share a song and talk about the effects about beautiful songs. T: Just now we enjoyed a song .Do you like it ? Ss:Yes. T: Its one of my favorite songs . Beautiful songs can always make us happy . Are you happy ? Ss:Yes, we are . T: But my friend Peter is unhappy now . Can you guess the reason ? 2 Lead-in Play two videos and let the Ss discuss their feelings. T: Well ,lets watch a video about him. . T: How did Peter feel last night ? Was he all right ? Ss: He felt terrible. T: Did he have a good sleep ? Ss: No. T: Why couldnt he fall asleep ? Ss: Maybe he fell ill/ had too much homework T: well ,lets watch the whole video to find out the truth. T: What made Peter awake and feel terrible last night ? Ss: Noise ! 先一段不完整的无声的视频，要求学生充分发挥想象力，训 练学生的发散性思维。然后再看一遍完整的有声的视频，揭晓 答案，让学生也对这节课的主题噪音有更深的理解和感受。 3Pre-reading Share some opinions about noise pollution . At the same time , learn some key words and phrases together . 4While-reading Step 1: Let the Ss read 1a quickly, check what things can make noise in 1a. Step 2: Lead the Ss to read 1a, find the words in 1b and guess the meanings of them according to the content. Then match the words with the meanings. Finish 1b. Step 3: Let the Ss read 1a carefully and finish the task in 1c. 5Post-reading Step 1: Let the Ss read 1a carefully, find out the two difficult sentences and then change them into another sentence . Step 2: Guide the Ss to complete the passage with correct form of each word. Finish 2. 6Group work : Finishing Task 3 and 4 Let the Ss discuss one kind of pollutions according to the information they collected before class. Then make a report like 4. After class, write your report in your exercise book and hand it in in time.Discuss one kind of pollution in groups according to the information they collected before class. Then make a report like 4. 7 Moral education We share the only one earth with each other. Let us try our best to protect the environment and make our home clean, quiet and beautiful ! 8Summarizing and assigning homework Step 1: Let the Ss go through what they have learned today. Step 2: HMK: Write a passage about one sort of pollution. Assign 4 as the HMKGo over together what they have learned today and each student speaks out one word or phrase to check their achievement.