Unit 3 Reading and thinking ppt课件 -（2022新）人教版高中英语选择性必修第三册.pptx

1、新人教版选择性必修三Unit3Reading and thinkingReading and thinkingDiscuss climate changeLead-in Look and discuss1. Whats happening in the photo?2. Why did it happen? The ice is melting.Because of the greenhouse effect/global warming.Video Time: The story behind the picture Think: Other influences of the greenh

2、osue effect dyinganimalsextreme weathernatural disastersLook at the graph below. What is it about? What information can you get from it?The earth is becoming warmer and warmer.Reading 1. What type of writing is this passage?A. Argumentative writing B. Narrative writingC. Expository writing D. Advert

3、ising writingC2. In which part of a newspaper or magazine may we find this passage?A.Entertainment B. EconomyC. Education D. EnvironmentD本文是一篇本文是一篇说明文说明文。说明文是客观说明事物的一种文体，。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目

4、的，因此说明文以客观、准绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。确为基本要求，强调科学性和客观性。Read for main idea text type Task 1Read for main idea text type Task 1 2. match the main idea with each part:Part 1 (para.1-2 )Part 2 (para. 3)Part 3 (para. 4)Part 4 (para. 5)D. The evidence of dramatic climate changeB. The cause

5、s of global warmingA. The effects of the rise in temperatureC. The solutions to reducing greenhouse gas emissionsClimate change Evidence SolutionsCauses Effects Scan and finish the mind map Task 2本文按照本文按照“现象现象原因原因危害危害措施措施”的逻辑顺序展开，的逻辑顺序展开，环环相扣，步步深入。标题环环相扣，步步深入。标题Climate Change Requires the Worlds Att

6、ention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。Para 1: ProblemThe _ is getting warmer and warmer.Evidence 1: _Evidence 2: _Evidence 2: _Eartha warming ocean and atmospheremelting icerisin

7、g sea levelsclimatechangePara 1 CLIMATE CHANGE REQUIRES THE WORLDS ATTENTION We have known about climate change for decades. There is little doubt that Earth is getting warmer and warmer (see the graph). A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of

8、a dramatic changein the global climate.气候变化毫无疑问.3. 和；连同提供证据一个巨大的变化Para 2: An example of climate changeTime Where What happenedWhy did it happen2013Norways Arctic Island of Svalbard.A polar bear died of starvation.The bear cannot hunt seals as before.Para 2 In 2013, a lot of people were shocked by a

9、news photo of a dead polar bear that was found on Norways Arctic island of Svalbard. According to the scientists who found its dead body, all that remained of the polar bear was skin and bones . An expert who has studied polar bears for many years said that from the position of its dead body, the be

10、ar appeared to have starved and died. Experts claimed that low sea-ice levels caused by climate change meant that the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case showed how the increase in temperature had an impact on Earths ec

11、ology. 被.震惊北极熊所剩下的一切北极熊所剩下的一切似乎似乎宣称宣称令人震惊的案例令人震惊的案例对对.产生影响产生影响过去分词作定语过去分词作定语1. I doubt Tony will accept the invitation. 2. There is little doubt their habitats are being destroyed. 3. The woman, along with two children, (come) here every day.4. They (shock) by the news that their son needed an opera

12、tion.5. The presence or absence of clouds can have an impact temperature. 语法填空。语法填空。whether/if考点追考点追击击that comeswere shockedonDefinitionDefinitionFunctionA big problemFunctionHeat from the sun enters the atmosphere and warms Earths surface as short-wave radiation. People produce huge amounts of extr

13、a greenhouse gases by burning fossil fuels.keeping Earths climate warm and habitable More heat energy is trapped in the atmosphere and causes Earths surface temperature to rise quickly.Greenhouse Effectman-made natural2. Read Para.3 to finish the following chart.Causes of global warming Then what is

14、 causing the increase in ? Climate scientists often mention a key climate process called the which has two common meanings: the natural greenhouse effect and the greenhouse effect. The natural greenhouse effect the fact that heat from the sun enters the atmosphere and warms Earths surfaceThe heat is

15、 released back space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earths climate warm and habitable. Without this process, Earth could not However, the man-made greenhouse effect has now become a big problem. When peop

16、le produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy the atmosphere and causes Earths surface temperature to rise quickly.Para 3全球平均表面温度 温室效应人造的指的是以短波辐射的形式释放到维持生命be trapped in意是意是“被困在被困在; 陷入困境陷入困境; 陷入陷入” 。be trapped in意是意是“被困在被困在; 陷入困境陷入困境; 陷入陷入” 。be caught in

17、表示“陷入,卷入”；be stuck in 表示“受困于，被困在中， 陷入，卡住不动”。含蓄条件句含蓄条件句1. your help I could not get there on time.2. He (trap) in the hard task. 3. A friend of mine often referred Dr. Bethune when I was in Canada.4. The cold weather caused the plants (die). 5. The fact he has fully recovered makes me feel good. 语法填空

18、。语法填空。Without考点追考点追击击was trapped toto diethat3. Read Para.4 to finish the following chart.Negative effectsnot only .but also .extreme weathernatural disasterscausing serious damagecosting human livesWhat extreme weather is mentioned in Para.4？ extreme rainstorms and heatwaves There is that the rise

19、in temperature has led to an increase in and worldwide, not only causing serious damage, but also costing human lives. Climate scientists have warned that if we do not , this will probably continue and there will be a higher price to pay. In fact, news reports are frequently broadcast about extreme

20、rainstorms and heatwaves causing deaths and Para 4充分且全面的证据极端天气自然灾害造成生命损失采取适当的行动变暖的趋势极端暴雨和热浪经济损失What are the solutions to global warming？4. Read Para.5 and answer the question. The governments need to consider making policies and taking appropriate actions and measures to reduce greenhouse gas emissi

21、ons. Individuals can also reduce our “carbon footprint” by restricting the amount of carbon dioxide our lifestyles produce.Para 5Continued greenhouse gas emissions will further warming and to the global climate. This requires the attention of people all over the world. Governments need to policies a

22、ndto reduce greenhouse gas emissions. We can also reduce our carbon footprint by our lifestyles produce. to educate everyone about global warming, along with its causes and impacts, because this is the most serious issue affecting all of us on this planet. So what will you do to help? 导致，由.造成=lead t

23、o=contribute to=result from v持久变化持久变化 考虑做某事 作为个人作为个人 限制二氧化碳的量抓住机会做某事Climate change Evidence SolutionsCauses Effects governmentindividualsextreme weathernatural disastersGreenhouse effectnatural greenhouse effectman-made greenhouse effectPost thinking: mind-mapPost thinking: mind-mapGreenhouse effect

24、Language points1melting ice2provide evidence of 3a dramatic change4skin and bones5trap the heat6sustain life7huge amounts of8fossil fuels9pay a high priceLanguage points: Important phrases (P26 P27)正在融化的冰正在融化的冰为为提供依据提供依据 / / 证据证据急剧变化急剧变化困住热量困住热量皮包骨皮包骨大量的大量的化石燃料化石燃料维系生命维系生命付出巨大的代价付出巨大的代价10long-lastin

25、g changes11make policies 12seize the opportunity13map out14cause and effectLanguage points: Important phrases (P26 P27)持久的变化持久的变化抓住机会抓住机会制定政策制定政策规划；安排规划；安排因果因果Discussion Who do you think should take responsibility for dealing with climate change? What can we do?I think we all need to take responsibi

26、lity 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.TLanguagepoints n. 图；图表；曲线图 n. 排放物；散发物；排放 vi.&vt.(使)融化；熔化；软化 n. 生态；生态学 vt. & n. 排放；释放；发布 adv. 遍及全球地 adj. 世界各地的 n. 趋势；趋向；动向 vt

27、. & vi. 播送；广播；传播graphemissionmeltecologyreleaseworldwidetrendbroadcastKey words n. 政策；方针；原则 n. 足迹；空间量；面积 vt. 抓住；夺取；控制 vi.&vt.(使)挨饿；饿死 adj. 适合居住的 adj. 可持续的；合理利用的 adj. 全部的；所有的；详尽的 adv. 频繁地；经常 vt. 限制；限定；束缚policyfootprintseizestarvehabitablesustainablecomprehensivefrequentlyrestrict 和一起 对有影响 指的是 大量的 被包裹

28、在 采取行动 导致 为负责任along withhave an impact onrefer tohuge amounts ofbe trapped intake actionresult intake responsibility forKey phrases 1. There is little doubt that Earth is getting warmer and warmer. There is some doubt whether . 是否是否是有疑问的是有疑问的that引导同位语从句，解释说明引导同位语从句，解释说明doubt的具体内容的具体内容注意：注意：doubt前有前有

29、否定意义的否定意义的词修饰时，词修饰时，由由that引导引导(否定句否定句)；doubt前有肯定意义的词修饰时前有肯定意义的词修饰时，whether或或if引导（肯定句引导（肯定句/疑问句）疑问句）。along with 意为“连同；以及；和一起 ”。连接前后两个主语时，谓语动词应和前面的那个主语保持一致。例：1. She came to dinner along with her friends. 2. Jim, along with his classmates, has seen the film. 。 练习The woman, along with two children, (com

30、e) here every day. comeswith， together with；along with; as well as;besides;apart from; except.就前一致的词有哪些？2. According to the scientists who found its dead body, all that remained of the polar bear was “skin and bones”.who引导的定语从句，修饰先行词引导的定语从句，修饰先行词scientiststhat引导的定语从句，修饰先行词引导的定语从句，修饰先行词all, that不能用不能

31、用which代替代替句意：根据发现北极熊尸体的科学家的说法，这只北极熊句意：根据发现北极熊尸体的科学家的说法，这只北极熊只剩下了只剩下了“皮和骨头皮和骨头”。指的是 参考；查阅_谈到；提到refer to1. His report refers to the situation in the Middle East.2. The writer often refers to a dictionary. 3. The book which you referred to is not in the library.The natural greenhouse effect refers to t

32、he fact that heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation. 1. 谈到；提到2. 参考；查阅3. 指的是 that 引导定语从句与同位语从句 The natural greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation.The news（that

33、）he told me is really encouraging.The news that our team has won the game is really encouraging.that引导的定语从句和同位语从句的区别性质不同、句法功能不同同位语从句的连接词不充当句子成分，但不可省略；定语从句的关系代词代替先行词在句中充当成分，充当宾语时可省略。这个“自然的”温室效应是指来自太阳的热量以短波辐射的形式进入大气层，使地球表面变暖。the fact that. that 引导的是同位语从句。5. There is strong .disasters worldwide not onl

34、y causing serious damage but also costing human lives.not only.but also.连接两个相同的结构, 可以连接两个主语、谓语、宾语、表语、状语等，还可连接两个并列的句子，所强调的重点是后面部分。当它连接主语时，谓语动词遵循就近原则。not only 位于句首时，用倒装。1. Shakespeare was not only a writer but also an actor.2. Not only Tom but also I am an engineer.巩固练习：不但是位作家，而且是位演员1. Homework：2. 1.c

35、limate changes2.There is little doubt that.3.along with4.provide evidence5. a dramatic change para 11.气候变化2. 毫无疑问.3. 和；连同4. 提供证据5. 一个巨大的变化1.be shocked by2.appear to do =seem to do 3.in order to do.4.the alarming case5.have an impact/effect/influence on1. 被.震惊2. 似乎3. 目的是4. 令人震惊的案例5.对.产生影响 para 2para3

36、1.global average surface temperature2.a key climate process3.greenhouse effect4.man-made5.refer to (referred-referring) reference6.as short-wave radiation7.release.into.8.keep earths climate warm and habitable9.sustain life10. huge amounts of11. be trapped in 1. 全球平均表面温度2. 一个关键气候过程3. 温室效应4. 人造的5. 指的

37、是6. 以短波辐射的形式7. 释放到8. 地球温度保持温暖并适于居住9. 维持生命10. 大量的11. 被困在1. strong and comprehensive evidence2. extreme weather3. natural disasters4. cause damage5.cost human lives6. take appropriate action7. the warming trend8. frequently broadcast9. extreme rainstorms and heatwaves10. economic lossesPara41. 充分且全面的证

38、据2. 极端天气3. 自然灾害4. 造成损害5. 造成生命损失6. 采取适当的行动7. 变暖的趋势8. 频繁地报道9. 极端暴雨和热浪10. 经济损失Para.51.result in=lead to=contribute to=result from v. as a result of =because of=due to= 2. consider making policies3. take appropriate action/ measures/steps4. restrict the amount of carbon dioxide5. It is our responsibilit

39、y to do take responsibility for doing6. seize the opportunity to do（seize sb. by the+n.）7. deal with climate change（tackle/ work out /address /handle ）1. 导致，由.造成由于2. 考虑制定政策3. 采取适当的行动4. 限制二氧化碳的量6. 抓住机会做某事7. 处理新词相知meltrelease habitablesustaintrendemissionhave an impact on/upon对有影响take. . .actions to do sth.采取行动做某事refer to参考be trapped in陷入新词相知along with连同一起result in 导致be responsible for 对负责任in search of 搜查in response to 作为.答复lead to 导致