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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2021/3/21,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,UNIT 3,ENVIRONMENTAL PROTECTION,1,UNIT 31,2,2,To discuss climate change,To learn to identify the style of this text and infer the writers purpose,To learn to draw a diagram,To think about how we can do to deal with climate change,3,To discuss climate change3,Climate change is a heat topic for the scientists 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?,View the video.,4,Climate change is a heat topic,5,5,But someone may ask:is climate change really a problem?Why?,It leads to floods/flooding.,Its getting hot and hotter and so there are more droughts.,The polar ice sheet is melting and the sea levels are,rising.Sea-level rise,in,turn causes damage to coastal,regions.,6,But someone may ask:is climat,Lead to extreme weather which in turn impacts farming and harvests,Disrupt,the balance of the ecosystem,Destruct wildlife,Deforestation,7,Lead to extreme weather which,What is the graph about?What information can you get from it?,Have you ever seen the photo before?What might be the story behind it?,Discuss climate change,Before you read,look at the graph and the,picture on Page,26 and discuss these questions in groups.,8,What is the graph about?What,1,.What type of writing is this passage?,Argumentative writing,Narrative writing,C.Expository writing,D.Advertising writing,C,2.In which part of a newspaper or magazine may we find this passage?,Entertainment B.Economy,C.Education D.Environment,D,Read the passage quickly,and choose:,9,1.What type of writing is thi,Read the text quickly,and figure out the main idea of each paragraph.,Para.1,The earth is getting warmer.,Para.2,A specific example of the results of climate change,Para.3,A major reason of global warming,is,“man-made”,greenhouse effect.,Para.4,The danger of rising temperature,Para.5,We should seize every opportunity to reduce global warming.,10,Read the text quickly,and fig,Read the text carefully,and answer the questions.,What happened to the polar bear in the photo?Why did the writer write about it?,Possible answers:The polar bear died of starvation/hunger.The write used this alarming case as an example to show us how the increase in temperature had terrible impact on Earths ecology.,11,Read the text carefully,and a,dead polar bear,in,Norways,Arctic,island of Svalbard,12,dead polar bear in12,2.Why is the“natural”greenhouse effect important and necessary?,One possible answer:Greenhouse gases can trap some of the heat,which can keep Earths climate warm and habitable.Without this process,Earth could not sustain life.,13,2.Why is the“natural”greenh,1.What,are the“greenhouse gases”?,In,the atmosphere surrounding the earth,there,are gases called“greenhouse gases”,including carbon dioxide,methane(,甲烷,沼气,).,2.How do you understand“greenhouse effects”?,They trap the heat from the sun,which,causes the temperature of earth goes up.,Related questions:,14,1.What are the“greenhouse ga,3.What are the consequences of high greenhouse gas emissions?,Possible answers:,Earths surface temperature to rise,extreme weather,natural disasters,low sea-ice levels,causing deaths,economic losses,15,3.What are the consequences o,4.Why did the author mention the climate scientists warning?,One possible answer:The topic is a scientific one,so adding the climate scientists warning can make the authors opinion(or writing)more persuasive form the scientific aspect.On the other hand,we readers may feel more reliable about the authors attitude if it is based on the research of some scientists.,16,4.Why did the author mention,5.What is the authors purpose of writing this text?,One possible answer:The author hopes we can pay attention to the climate change and do something to stop it.For he or she writes“We as individuals can also reduce our carbon footprint”and“It is our responsibility to seize every opportunity to educate everyone about global warming.”,17,5.What is the authors purpos,The _ is getting warmer and warmer.,Evidence one:,_,Evidence two:,_,Evidence three:,_,a warming ocean and atmosphere,Read paragraph one,and fill in the blanks.,Earth,m,elting ice,rising sea levels,18,The _ is getting warmer,Time,Where,What happened,How did it happen,2013,Norways Arctic island of Svalbard,A polar bear died of starvation.,Paragraph 2 introduces an example of the increase in temperature that had an impact on Earths ecology.Read it and fill in the blanks.,The bear cannot hunt food because of low sea-ice levels.,19,Time Where What happenedHow di,Trap heat from the sun to keep the Earths sustainable life.,Read Paragraph 3,and figure out the reason why earths temperature rising.,Green-house effect,“Natural”greenhouse effect,“man-made”greenhouse effect,By burning fossil fuels,extra greenhouse gases cause Earths temperature to rise.,20,Trap heat from the sun to keep,Read the article again and create a d
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