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2018-2019人教新目标高中英语选修六课件:unit 4 warming up & reading(ⅰ)

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    • 1、Unit 4 Global warming Warming Up & Reading (),1. Learn something about the global warming. 2. Save energy and tell the importance of protecting the earth. 3. Master the reading skills.,Learning aims,Leading-in,The whole world is becoming warmer and warmer.,Why?,population,air pollution,carbon dioxide,acid rain,water pollution,What can we do about GLOBAL WARMING,?,What is a greenhouse used for?,How does it work?,Pre-reading,_ the heat from the sun,keeps it from _,_ the air up,How does a greenhous

      2、e work?,traps,escaping,heats,Reading,The earth is becoming warmer but does it matter?,Does it matter if the earth becomes warmer?,Part. Part . Part .,The introduction The body The conclusion,Para 1,Paras(26),Para 7,Who is to blame for the earths becoming warmer?,raise a question,Conclude the main idea of each part:,Scanning,Skimming,1. Who wrote the magazine article? What is the name of the magazine? 2. What are the names of the three scientists mentioned in the article?,Sophie Armstrong.,Earth

      3、Care.,Dr Janice Foster, Charles Keeling, George Hambley.,Reading tips: In English, some nouns begin with a capital letter(大写字母), such as names of people and places, titles(标题) of magazines, newspapers, stories and books, peoples titles(头衔), etc,3.What is mainly discussed in the passage? A. What has caused the global warming and whether it matters. B. What effects of the global warming will be. C. How serious the global warming could be. D. What the global warming is.,Reading tips skim the title

      4、and Para 1: Title: THE EARTH IS BECOMING WARMER BUT DOES IT MATTER? Para 1: how has this come about and does it matter?,Para 3 How do humans affect the earth warming up?,Humans burn fossil fuels like coal, natural gas and oil to produce energy.,2. What are greenhouse gases?,The by products of the process of producing energy, the most important one is carbon dioxide.,Detailed reading,Para 4. Who made accurate measurements of the amount of carbon dioxide? Charles Keeling,Para 5 How high will the t

      5、emperature increase go? It could be as high as 5 degrees.,Para 6,What do Dr. Janice Foster and the scientist George Hambley think about the results of global warming? Do they agree with each other?,go up,catastrophe,very serious,positive,produce,a greater range of animals,Their attitudes are completely different.,What is the purpose of this paragraph? It functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future.,Para 7

      6、,Positive effects,Negative effects,1. cause the sea level to rise; 2. severe storms; 3. droughts; 4. famines; 5. destruction of species 6. flood,1. make plants grow faster; 2. crops will produce more; 3. make life better,Does global warming matter?,1.The temperature last century didnt increase much. 2.Everyone believes that global warming is caused by the activities of humans. 3.Janice Foster believes that global warming is caused by burning fossil fuels. 4.Natural gas is a greenhouse gas. 5.Car

      7、bon dioxide is a byproduct of burning fossil fuels. 6.People accept Charles Keelings data because he took accurate measurements.,Read the article carefully. Tell true or false.,T,T,F,T,T,F,Class exercises,Discussion: The earth is becoming warmer, but does it matter? If it does, as a student, what should you do about it?,Debate,A,B,A : We shall do something about global warming.,B: We shall do nothing about global warming.,What should we do?,Love our planet! Love life!,Enjoy the song,Homework,1.Preview the text carefully. 2.Remember all the words by your heart.,It is no use crying over spilt milk. 覆水难收。,

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