《Unit3ReadingandThinking课件--高中英语人教版(2019)选择性必修第三册.pptx》由会员分享，可在线阅读，更多相关《Unit3ReadingandThinking课件--高中英语人教版(2019)选择性必修第三册.pptx（15页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Unit 3 Environmental ProtectionReading and ThinkingBefore Reading1. What is the graph about? What information can you get from it?2. Have you ever seen the photo before? What might be the story behind it?Activity 1: Before you read, look at the graph and the picture below and discuss these questions
2、 in groups.Activity 1: Before you read, look at the graph and the picture below and discuss these questions in groups.1. What is the graph about? What information can you get from it?2. Have you ever seen the photo before? What might be the story behind it?No, I havent seen this photo before. The st
3、ory may be that the polar bear suffered from the increasing global temperature.The graph is about the change of the global surface temperature. It shows that the global temperature is rising.Before ReadingActivity 2: Read the text and answer the questions.1. What happened to the polar bear in the ph
4、oto? Why did the writer write about it?2. Why is the “natural” greenhouse effect important and necessary?3. What are the consequences of high greenhouse gas emissions?4. Why did the author mention the climate scientists warning?5. What is the authors purpose of writing this text?（点击此处播放音频）Before Rea
5、dingDifferent forms of artWhile ReadingKeys:1. The polar bear in the photo died of starvation. The writer wrote about it because it showed one of the effects of rising temperatures due to climate change.2. The “natural” greenhouse effect is important because it warms the Earths surface and keeps it
6、habitable.3. High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.4. Because the writer wanted to warn us of how urgent it was for us to take appropriate actions.5. To arouse our awareness of the problem and encourage us to take appropriate m
7、easures to deal with global warming.Activity 2: Read the text and answer the questions. Fast reading.1. What does the passage mainly tell us?A. Some polar bears died of starvation.B. What the greenhouse effect is.C. How the polar bears find food.D. Global warming has caused some disasters and we mus
8、t pay attention to it.While Reading2. Read the text and find out the main idea of each paragraph.Para.1A. We need to do something to reduce greenhouse gas emissions.Para. 2B. The rise in temperature has caused natural disasters.Para. 3C. Earth is getting warmer and warmer.Para. 4 D. A dead polar bea
9、r was found, which alarmed some experts.Para. 5E. Why is Earth getting warmer and warmer? Fast reading.While Reading Careful reading.Read the passage carefully and choose the best answer.1. From the second paragraph we can learn that .A. all the polar bears have died of starvationB. the expert knows
10、 nothing about the polar bearC. the polar bear couldnt find enough food because of climate changeD. the polar bear liked travelling long distancesWhile Reading2. According to the passage, help(s) Earth sustain life.A. the natural greenhouse effectB. the man-made greenhouse effectC. the carbon dioxid
11、e released into the atmosphereD. greenhouse gases produced by people Careful reading.While Reading3. Which of the following statements is TRUE according to the passage?A. According to climate scientists, the warming trend will stop.B. Extreme weather results from the rise in temperature.C. People sh
12、ould burn more fossil fuels.D. It is the governments responsibility to reduce greenhouse gas emissions. Careful reading.While Reading4. We can learn from the passage that .A. it doesnt matter whether we pay attention to global warming or notB. heat from the sun keeps Earth habitableC. the rise in te
13、mperature doesnt affect peoples lifeD. the rise in temperature only affects some animals Careful reading.While ReadingAfter ReadingActivity 3: Read the text again and create a diagram describing how the greenhouse effect works.Draw a diagramDiagrams are very useful tools that can be used to brainsto
14、rm ideas, map out processes, show cause and effect relationships, explain a new idea or concept, and so on. When you read an essay about scientific issues, you can try drawing a diagram, which will not only allow you to visualise the problems more clearly but also can help demonstrate your creative
15、thinking and problem-solving.Key:Activity 3: Read the text again and create a diagram describing how the greenhouse effect works.After ReadingHomework Activity 4: Discuss these questions in groups.1. What examples of extreme weather and disasters do you know? Can you make a list?2. Do you think clim
16、ate change is the result of human activity? Give your reasons.3. Who do you think should take responsibility for dealing with climate change? What can we do?Homework Activity 4: Discuss these questions in groups.Keys:1. Tornado, hail, typhoon, strong cold wave, sandstorm, etc.2. Yes, I think so. It is the burning of fossil fuels by human beings that has added more heat to the atmosphere.3. Everyone of us should take responsibility for it. We can buy things that are economical with energy and recycle paper bags, cans and bottles.