1、人教选择性必修第三册 Unit 3 Reading and Thinking(I)Discuss climate change教学目 Lead-in视频：视频：Climate change学习目标学习目标12To understand the causes of global warming and learn to draw a diagram to show the greenhouse effect by reading an explanatory text on climate change To use the key words and phrases in the contex
2、t,and learn to accumulate and distinguish synonymous words目标一：目标一：To understand the causes of global warming and learn to draw a diagram to show the greenhouse effect by reading an explanatory text on climate changeActivity 1:Find out the new words and phrases.Read the words and phrases,and say thei
3、r Chinese meanings loudly.graphstarvemeltemissionecologysealreleasedioxidecarbonmethanesustainhabitablefossilworldwidecomprehensivefuelfrequentlytrendbroadcastrestrictfootprintpolicyseizeActivity 2:Before you read,look at the graph and the picture below and discuss these questions in groups.1.What i
4、s 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?1.The graph shows the change in the Global Surface Temperature between 1920 and 2016.It shows the temperature anomaly,which shows how much the temperature has risen above wh
5、at it would usually be at a base level.2.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.Activity 3:Fast reading.Task 1 Read the text quickly and answer the following questions.1.What type of writing is
6、 this passage?A.Argumentative writing B.Narrative writing C.Expository writing D.Advertising writing2.In which part of a newspaper or magazine may we find this passage?A.Entertainment B.Economy C.Education D.EnvironmentTask 2 Match the main idea with each part.Part 1(para.1-2)Part 2(para.3)Part 3(pa
7、ra.4)Part 4(para.5)The evidence of dramatic climate change that had an impact on Earth ecologyThe cause of the increase in the global average surface temperatureThe consequences of the rise in temperatureThe solutions to reducing greenhouse gas emissionsActivity 4:Make a mind map for each part.Part
8、1(para.12)Evidence of climate change EvidenceA graph showing rising global temperatureA warming ocean and atmosphere along with melting ice and rising sea levelsDead polar bear in Norways Arctic island of SvalbardPart 2(para.3)A key climate process called the greenhouse effect Greenhouse effectnatur
9、al greenhouse effectman-made greenhouse effectkeeping Earths climate warm and habitablecausing Earths surface temperature to rise quickly if too much heat energy is trappedPart 3(para.4)The consequences of the rise in temperatureConsequencesan increase in extreme weather and natural disasters worldw
10、ide,causing serious damage and costing of human livesThis warming trend will probably continue.Examples:News reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.Part 4(para.5)Solutions to the environmental problemsSolutionsThe attention and awar
11、eness of everyoneThe government:making policies and taking appropriate actions and measuresIndividuals:reduce our“carbon footprint”Activity 5:Read the text carefully and answer the questions.1.What happened to the polar bear in the photo?Why did the writer write about it?2.Why is the“natural”,greenh
12、ouse 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?Suggested Answers:1.The polar bear in the photo died of starvation.The writer wrote about it
13、 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 habitable.3.High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.
14、4.The author mentioned the climate scientists warning because it is essential that we take action and so it needs to be brought to everyones attention.5.The authors purpose is to inform the reader and inspire them to do whatever they can to deal with this problem.Activity 6:Read the text again and c
15、reate a diagram describing how the greenhouse effect works.Draw a diagramDiagrams are very useful tools that can be used to brainstorm 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 drawin
16、g a diagram,which will not only allow you visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.Suggested Answer:Activity 7:Discuss these questions in groups.1.What examples of extreme weather and disasters do you know?Can you make a list?2.Do y
17、ou think climate 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?Suggested Answers:1.There are sadly many examples of extreme weather and disasters I know of,such as the extreme rainfall in France a
18、nd the drought in East Africa in 2014.There were also heatwaves on nearly every continent due to climate change.2.I do think that climate change is the result of human activities because the majority of scientists also think so,and also because global temperatures have followed the rise in global em
19、issions and population.3.I think we all need to take responsibility for dealing with it.Individuals can change their behaviour and try to reduce their carbon footprint,while companies and governments can do the same on the larger scale.人教选择性必修第三册 Unit 3 Reading and Thinking(II)Build up your vocabula
20、ry目标二：目标二：To use the key words and phrases in the context,and learn to accumulate and distinguish synonymous wordsActivity 1:Identify language points that you want to share with your partner.Discuss in groups and then share with the class.1.An expert who has studied polar bears for many years said t
21、hat from the position of its dead body,the bear appeared to have starved and died.一位研究北极熊多年的专家说，从它尸体的位置来看，这只熊似乎是饿死了。starve vt.&vi.(使)挨饿；饿死【归纳拓展】【归纳拓展】starve to death饿死starve for渴望；急需starving adj.饥饿的；挨饿的starvation n.饿死；挨饿；绝食2.The heat is released back into space at longer wave lengths.热量以更 长的波长释放回太空。
22、release vt.释放；排放；发布【归纳拓展】【归纳拓展】(1)release sb.from将某人从某地释放 release sb./sth(back)into将某人/某物放回到中 release news发布消息(2)release n.释放；发布；发行e.g.Action had been taken to speed up the release of cheques.【词语辨析词语辨析】free,liberate,release,discharge 这些动词均含解放，释放之意。free:指不再受任何限制、约束、阻碍和压迫，完全可按自己的意 志行事。liberate:常指从束缚和压
23、迫中解放出来，强调获得最终的解放。release:侧重指放松限制、解除监禁或免除义务。discharge:强调把某人或某物从监禁、束缚中释放出来。3.Without this process,Earth could not sustain life.没有这个过程，地 球就无法维持生命。sustain vt.维持；遭受；承受住(1)sustain vt.是个多义词语，可表示：维持，保持；支撑，支持；支援，救济；经受，遭受，忍受(不愉快的事情)；供养，承担；证实；扮演(2)sustainable adj.可持续的；合理利用的【词语辨析词语辨析】back,uphold,support,sustain
24、,advocate 这些动词均有支持，支援，拥护之意。back:通常指对论点、行动、事业等的强有力支持。uphold:既可指积极努力对陷入困境者的支持，也可指给某人在行 动、道义或信仰上的支持。support:含义广泛，多指在道义上或物质上支持某人，也可指对某 项事业的支持。sustain:侧重指连续不断的支持。advocate:多指通过写文章或发表演说等来支持或拥护，往往暗示提 倡某事或为某事辩护。4.It is our responsibility to seize every opportunity to educate everyone about global warming,alo
25、ng with its causes and impacts,because 我们的责任是抓住每一个机会教育每个人关于全球变暖，及其原因和影响，因为seize v.抓住；夺取；控制【归纳拓展归纳拓展】seize sth.from sb.从某人那里夺取某物seize a chance/an opportunity 抓住机会/机遇seize on/upon sth.突然对某事大为关注；抓住e.g.The robber tried to seize the handbag from the young lady.Activity 2:Complete the sentences with the c
26、orrect forms of the words in the box.broadcast comprehensive ecology starve seize1.The Amazon basin,known as the“lungs of the world”,not only provides some _ balance for the planet,but also food and resources for the local natives.2.Thousands of baby penguins _ to death because the changing climate
27、forced their parents to leave them and travel long distances in search of food.3.Many experts link Chinas economic success to the _ reform that China has undergone since 1978.4.The speaker said the media should make more _ that spread awareness of the climate crisis and possible solutions.5.To deal
28、with climate change,we must _ the initiative to do whatever is necessary to protect our environment.ecologicalstarvedcomprehensivebroadcastseizeActivity 3:Complete the passage with the correct forms of the words in the box.fuel policy release restrict sustain trendCarbon dioxide is _ through human a
29、ctivities such as destroying forests and burning fossil _,as well as natural processes such as volcanic eruptions.The measurements by climate experts show a rising _ of carbon dioxide emissions.If this continues,our planet will face further environmental disasters.In response to this environmental i
30、ssue,China is implementing significant _ and measures to address climate change,aiming to _ coal consumption,promote a harmonious relationship between man and nature,build a _ energy system,and advocate a moderate,green,and low-carbon lifestyle.releasedfuelstrendpoliciesrestrictsustainableActivity 4
31、:The following words and phrases can all mean“to make something happen”.Finish the two tasks.cause be responsible for bring about lead to result inTask 1 Look them up in the dictionary and discuss their differences.causebe responsible forbring aboutlead toresult into make sth.happen,especially sth.b
32、ad or unpleasant 负面事件 一前一后的因果联系，一般可预期未可预的，可负面事件“致使”随之而来,如影随形 being able to be blamed for sth.“罪魁祸首”Example:l According to the report submitted by researchers,between 20 and 25 percent of all annual,carton dioxide emissions are caused by the destruction of tropical forests.l A breakdown in the comput
33、er system was responsible for yesterdays chaos in the subway station.Task 2 Create sentences of your own using each of them.Suggested Answers:l Most scientists believe climate change is caused by burning fossil fuels.l Every person should be responsible for their own waste when they are out and about.l It may seem hard to bring about real change,but we must not give up hope.l Smoking can lead to serious diseases such as cancer.l Charging customers for plastic bags has resulted in a 70%drop in their usage.学习总结学习总结 Retell how the greenhouse effect works.
