Unit 3 Environmental protection Reading and Thinking ppt课件-（2022新）人教版高中英语高二选择性必修第三册.pptx

1、010203By reading, explain causes and negative effects of global warming.By teamwork, present how to solve the problem of global warming in groups. Be aware of the importance of cutting greenhouse gases and take effective action to do it. Learning Objectives:Climate change is a heat topic for the sci

2、entists around the world. They all try to find out the truth about these questions: What causes the climate change? What are the solutions to stop climate change?Watch the video.Pre-readingBefore you read, look at the graph and the picture below and discuss these questions in groups.1. What is the g

3、raph about? What information can you get from it?1 12. Have you ever seen the photo before? What might be the story behind it?1. What is the graph about? What information can you get from it?The graph is about the change of global Surface temperature.It shows us that the global temperatureis rising

4、steadily and continuously.2. Have you ever seen the photo before? What might be the story behind it?I havent seen this photo, but I have seen photos like it. The story is that the polar bear starved to death because it could not find enough to eat.Skim the text and sum up the main idea of each parag

5、raph:Part Para. Main idea12341-2The evidence of dramatic climate change that had an impact on Earths ecology3The cause of the increase in the global average surface temperature 4The consequences of the rise in temperature5The solutions to reducing greenhouse gas emissions本文按照本文按照“现象现象原因原因危害危害措施措施”的逻

6、辑顺序展开，环的逻辑顺序展开，环环相扣，步步深入。标题环相扣，步步深入。标题Climate Change Requires the Worlds Attention点明了作者的诉求：气候变化对地球生点明了作者的诉求：气候变化对地球生态系统的影响是巨大的，需要全人类共同关注和面对。文态系统的影响是巨大的，需要全人类共同关注和面对。文本以本以现在时态现在时态和和将来时态将来时态为主，强调文章的现实意义及对为主，强调文章的现实意义及对将来不利后果的预测。将来不利后果的预测。While-readingRead the text carefully, and answer the questions.1

7、.What happened to the polar bear in the photo? 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

8、 writing this text?While-readingRead the text carefully, and answer the questions.1.What happened to the polar bear in the photo? Why did the writer write about it? The polar bear in the photo died of starvation. The writer wrote about it because it showed one of the effects of rising temperatures d

9、ue to climate change.While-reading Can you use your words to describe how climate change have influenced the polar bears life?starved to death【拓展拓展】Climate changelow sea-ice levelsbears could not hunthad to travel greater distances to find foodits dead body found2. Why is the “natural” greenhouse ef

10、fect important and necessary?The “natural” greenhouse effect is important because it warms the Earths surface and keeps it habitable. While-readingKeeping Earths warm and habitable Read Paragraph 3, and figure out the reason why earths temperature rising.Greenhouse effect“Natural” greenhouse effect“

11、man-made” greenhouse effectCausing Earths surface temperature to rise quickly if too much heat energy is trapped【拓展拓展】3. What are the consequences of high greenhouse gas emissions? High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.While-re

12、ading Read Paragraph 4. What are the consequences of global temperature rise? Finish the mind map below.【拓展拓展】The rise in temperature led to example resultsextreme rainstorms, heat wavesserious damage, costing human lives, economic lossesextreme weather/ natural disasters4. Why did the author mentio

13、n the climate scientists warning?The author mentioned the climate scientists warming because it is essential that we take action and so it needs to be brought to everyones attention.5. What is the authors purpose of writing this text?The authors purpose is to inform the readers and inspire them to d

14、o whatever they can to deal with this problem.In Paragraph 5, the author hopes everyone can take actions to reduce our “carbon footprint”. As individuals, what can we do in our daily life to help to minimize climate change? What we can do in our daily life to help?What we can do in our daily life to

15、 help?What we can do in our daily life to help?What we can do in our daily life to help?What we can do in our daily life to help?What you should do to do to tackle it?What you should do to do to tackle it? Save energy Stop using plastic bags Live a low-carbon life Use the minimum paper, backing pape

16、r etc. Take green transportation Take a shower instead of a bath Turn off the lights, computers etc. the moment you dont need them 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 brainstorm ideas, ma

17、p 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 thinking and

18、 problem-solving.3 3Post-readingTHE GREENHOUSE EFFECTEarthAtmosphereHeat reflected back to Earths surfaceHeat reflected back into spaceSunlightReflected sunlight1.What examples of extreme weather and disasters do you know? Make a list of them.2. Do you think climate change is the result of human activity? Give your reason?3. Who do you think should take responsibility for dealing with climate change? What can we do ?Write a composition with the title : Global warming in my eyesThank you