Unit 3 Environmental Protection Reading and Thinking(ppt课件)-2022新人教版（2019）《高中英语》选择性必修第三册.pptx

1、二氧化碳二氧化碳graphemission melt starve seal ecology release methane carbon dioxide carbon dioxiden.图；图表；曲线图图；图表；曲线图n.排放物；散发物；排放排放物；散发物；排放vi.&vt.(使使)融化；熔化；软化融化；熔化；软化vi.&vt.(使使)挨饿；饿死挨饿；饿死n.海豹海豹n.生态；生态学生态；生态学vt.&n.排放；释放；发布排放；释放；发布n.甲烷；沼气甲烷；沼气n.碳碳n.二氧化物二氧化物habitable sustain sustainable fossil fuel fossil fue

2、l comprehensive worldwideadj.适合居住的适合居住的vt.维持；遭受；承受住维持；遭受；承受住adj.可持续的；合理利用的可持续的；合理利用的n.化石化石n.燃料；刺激性言行燃料；刺激性言行化石燃料化石燃料(如煤或石油如煤或石油)adj.全部的；所有的；详尽的全部的；所有的；详尽的adv.遍及全球地遍及全球地adj.世界各地的；影响全世界世界各地的；影响全世界的的trend frequently broadcast policyfootprint restrict restriction seizen.趋势；趋向；动向趋势；趋向；动向adv.频繁地；经常频繁地；经常v

3、t.&vi.(broadcast,broadcast/broadcasted)播送；广播；传播播送；广播；传播n.广播节目；电视节目广播节目；电视节目n.政策；方针；原则政策；方针；原则n.足迹足迹;(某物所占的某物所占的)空间量；面积空间量；面积vt.限制；限定；束缚限制；限定；束缚n.限制规定；限制法规；约束限制规定；限制法规；约束vt.抓住；夺取；控制抓住；夺取；控制1.To discuss the problem of climate change.2.To learn to identify the style of this text and infer the writers p

4、urpose.3.To think about how we can do to deal with climate change.Step 1.Lead-in1.Look at the graph below.What information can you get from it?droughtfloodmelting iceSea-level rise What can you see in the photo?What might be the story behind it?Step 2.Fast-reading1.What type of writing is this passa

5、ge?A.Argumentative writing（议论文）（议论文）B.Narrative writing（记叙文）（记叙文）C.Expository writing（说明文）（说明文）D.Advertising writing（广告）（广告）2.Whats the passage mainly about?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 disaster

6、s and we must pay attention to it.C.The solutions to reducing greenhouse gas emissions.A.The consequences of the rise in temperature.B.The cause of the increase in the global average surface temperature.3.Read and match the main ideas with each paragraph.D.The evidences of dramatic climate changetha

7、t had an impact on Earth ecology1.Read paragraph 1,and fill in the blanks.Step 3.Careful-readingThe _ is getting warmer and warmer.Evidence one:_Evidence two:_Evidence three:_a warming ocean and atmosphere Earthmelting icerising sea levels2、Paragraph 2 and fill in the blanks.Time Where What happened

8、How did it happenNorways Arctic island of SvalbardA polar bear died of starvation.The bear cannot hunt food because of low sea-ice levels.20133、Read paragraph 3,and answer the questions.1.Why is the“natural”greenhouse effect important and necessary?The“natural”greenhouse effect is important because

9、it warms the Earths surface and keeps it habitable.2.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.4、Read Paragraph 3 again,and figure out the reason why earths temperature ris

10、ing.4、Read Paragraph 3 again,and figure out the reason why earths temperature rising.Keeping Earths warm and habitableGreen-house effect“Natural”green-house effect“man-made”green-house effect Causing Earths surface temperature to rise quickly if too much heat energy is trappedThe rise in temperature

11、 led to example resultsextreme rainstorms,heat wavesserious damage,costing human lives,economic losses5、Read Paragraph 4,and fill in the blanks.extreme weather/natural disasters6、Read paragraph 5,and answer the questions.What can we do to fight global warming?*Governments:make policies and take appr

12、opriate actions and measures to reduce greenhouse gas emissions*Individuals:restrict the amount of carbon dioxide our lifestyles produce to reduce our“carbon footprint”What is the authors purpose of writing this text?The authors purpose is to inform the readers and inspire them to do whatever they can to deal with this problem.Climate change Evidence SolutionsCause Effects governmentindividualsextreme weathernatural disastersGreenhouse effectnatural greenhouse effectman-made greenhouse effectA better understanding of climate change?