Unit 3 Reading and Thinking -ppt课件 --(2022)高中英语新人教版选择性必修第三册.pptx

1、Reading and Thinking【版本：新人教 册别：选择性必修三】UNIT 3 ENVIRONMENTAL PROTECTION目录页Pre-readingLanguage pointsWhile-readingHomeworkIIIPost-readingPre-readingBeforePre-reading:Lead inPre-reading:Think and talkTodayWhat happened to the polar bear in the photo?Pre-reading:Think and talkCLIMATE CHANGE REQUIRES THE

2、WORLDS ATTENTIONWhile-reading1.What happened to the polar bear in the photo?The polar bear in the photo died of starvation.2.Why did the writer write about it?While-readingThe writer wrote about it because it showed one of the effects of rising temperatures due to climate change.Read through paragra

3、ph 1 and 2,and then answer the questions below.What information can you get from the graphs above?While-reading1.What is causing the increase in the global average temperature?The greenhouse effect.2.Why is the“natural”greenhouse effect important and necessary?While-readingThe“natural”greenhouse eff

4、ect is important and necessary because it warms the Earths surface and keeps it habitable.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.Read through paragraph 3,and then answ

5、er the questions below.Create a diagram describing how the greenhouse effect works in natural and man-induced situations.While-reading Function:brainstorm ideas,map out processes,show cause and effect relationships,explain a new idea or concept,visualise the problems,demonstrate the creative thinkin

6、g and problem-solving.A layer of greenhouse gases traps energy from the sun and stops the earth from freezing.natural man-induced+1（2016）Additional greenhouse gases further slow the release of heat back into space and cause the earths temperature to rise.While-reading1.Why did the author mention the

7、 climate scientists warning?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.2.What is the authors purpose of writing this text?While-readingThe authors purpose is to inform the reader and inspire the

8、m to do whatever they can to deal with this problem.Read through paragraph 4 and 5,and then answer the questions below.Post-readingPost-reading:Think and discuss1.Global warming will result in more frequent extreme weather and disasters.What examples do you know?Make a list.2.What should we do to sl

9、ow the progress of global warming?Post-reading:Think and discuss3.Its said that Zhengzhou flood on July 20 is a microcosm(缩影缩影)of global warming.Since global warming is unstoppable and irreversible,how shall we face and relieve the impact that extreme disasters bring?Post-reading:Think and discussLa

10、nguage 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-lasting chang

11、es11make 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Language points:Important sentences(P26 P27)1.There is little doubt that Earth is getting warmer and warmer.(P26)2.A warming ocean and atmosphere alon

12、g with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.(P26)3.An expert who has studied polar bears for many years said that from the position of its dead body,the bear appeared to have starved and died.(P26)4.Experts claimed that low sea-ice levels caus

13、ed by climate change meant the bear could not hunt seals as before,so it had to travel greater distances in order to find food.(P26)Language points:Important sentences(P26 P27)5.The“natural”greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earths surface as

14、short-wave radiation.(P26 P27)6.Greenhouse gases in the atmosphere,such as methane and carbon dioxide,trap some of the heat,keeping Earths climate warm and habitable.(P27)7.There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural d

15、isasters worldwide,not only causing serious damage,but also costing human lives.(P27)8.We as individuals can also reduce our“carbon footprint”by restricting the amount of carbon dioxide our lifestyles produce.(P27)同位语从句：大多由从属连词同位语从句：大多由从属连词_引导引导,常常跟在常常跟在order,report,wish,decision,suggestion,belief,d

16、oubt,fact,hope,message,news等抽等抽象名词的象名词的_，一般用来解释或说明这些名词的，一般用来解释或说明这些名词的具体含义或内容具体含义或内容。Language points:Important sentences(P26 P27)that后面后面句式分析1.There is little doubt _ Earth is getting warmer and warmer.毫毫无疑问，地球正变得越来越温暖。无疑问，地球正变得越来越温暖。(P26)5.The“natural”greenhouse effect refers to the fact _ heat fro

17、m the sun enters the atmosphere and warms Earths surface as short-wave radiation.“天然天然”温室效应指的是来自太阳的热量以短温室效应指的是来自太阳的热量以短波辐射的形式进入大气层，使地表变暖。波辐射的形式进入大气层，使地表变暖。(P26 P27)thatthat1.They expressed the hope _ they would come over to China soon.2.Word has come _ some American guests will come to our college f

18、or a visit next week.3.He cant answer the question _ he got the money from his home yesterday.4.Do you have any idea _ is actually going on in the classroom?5.The problem _ we should have the meeting in the hall nowmust be decided at once.Language points:Important sentences 即学即用thatthathowwhatwhethe

19、ralong with 连接前后两个主语时，谓语动词应和连接前后两个主语时，谓语动词应和_那个主语保那个主语保持一致，即持一致，即“就远原则就远原则”。Language points:Important sentences(P26)前面的前面的句式分析2.A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.海洋和大气变暖，以及冰层融化、海平面上升，都为全球海洋和大气变暖，以及冰

20、层融化、海平面上升，都为全球气候急剧变化提供了依据。气候急剧变化提供了依据。(P26)1.A library with five thousand books _(offer)to the nation as a gift.2.All but one _(be)here just now.3.Wechat,as well as Ding Talk,_(play)an important part in daily communication nowadays.Language points:Important sentences 即学即用is offeredwereis playing I a

21、m really sorry to have given you so much trouble.He was believed to have been a reporter.I expect to have read the book by the weekend.I meant to have called you last night.Compare and FindLanguage points:Important sentences(P26)3.An expert who has studied polar bears for many years said that from t

22、he position of its dead body,the bear appeared to have starved and died.一位长期研究北极熊的专家说，从尸体的姿势看，这只一位长期研究北极熊的专家说，从尸体的姿势看，这只北极熊像是饿死的。北极熊像是饿死的。(P26)动词不定式完成时动词不定式完成时4.Experts claimed that low sea-ice levels caused by climate change meant the bear could not hunt seals as before,so it had to travel greater

23、distances in order to find food.专家称，气候变化导致的海专家称，气候变化导致的海冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长途跋涉去寻找食物。途跋涉去寻找食物。(P26)caused by climate change在句中作在句中作_。Language points:Important sentences(P26)后置定语后置定语句式分析1.Prices of daily goods _(buy)through a computer can be lower than store prices

24、.2.The prize of the game show is$30,000 and an all-expense-_(pay)vacation to China.3.The disco,digitally recorded in the studio,_(sound)fantastic at the party now.Language points:Important sentences 即学即用boughtpaidsoundsv-ing 短语在句短语在句子子中作中作_。Language points:Important sentences(P27)结果状语结果状语句式分析6.Green

25、house gases in the atmosphere,such as methane and carbon dioxide,trap some of the heat,keeping Earths climate warm and habitable.大气层中甲烷、二氧化碳等温室气体困住了大气层中甲烷、二氧化碳等温室气体困住了部分热量，从而使地球保持气候温暖、适宜居住。部分热量，从而使地球保持气候温暖、适宜居住。(P27)1._(consider)the reasons mentioned above,we should take effective measures to protec

26、t our environment.2.The leader stayed up all night,_(think)of what to do the next day.3._(not receive)her reply,he decided to send another e-mail to her.Language points:Important sentences 即学即用ConsideringthinkingNot having received7.There is strong and comprehensive evidence _ the rise in temperatur

27、e has led _ an increase in extreme weather and natural disasters worldwide,not only causing serious damage,but also _(cost)human lives.确凿、全面的证据表明，温度上升导致全球极端天确凿、全面的证据表明，温度上升导致全球极端天气和自然灾害增多，不仅造成严重破坏，而且使人丧命。气和自然灾害增多，不仅造成严重破坏，而且使人丧命。(P27)Language points:Important sentences(P27)构词法构词法“-wide”表示表示“范围内的（地）范

28、围内的（地）”statewide _ _ countrywide _ industrywide _拓展thattocosting全行业的全行业的全州范围内的（地）全州范围内的（地）全国性的全国性的8.We as individuals can also reduce our“carbon footprint”by restricting the amount of carbon dioxide our lifestyles produce.作作为个人，我们可以通过限制生活方式产生的二氧化碳量来减少我为个人，我们可以通过限制生活方式产生的二氧化碳量来减少我们的们的“碳足迹碳足迹”。(P27)La

29、nguage points:Important sentences(P27)restrict名词形式是名词形式是restriction 搭配：搭配：restrictions on restrict oneself to(doing)sth拓展1.The earliest studies have suggested a link between calorie _(restrict)and slowing aging.2.We make no restrictions _ the kinds of films we show as long as a films quality meets o

30、ur standards.3.Dont restrict yourself to _(make)friends it will help increase your knowledge.Language points:Important sentences 即学即用restrictiononmaking HomeworkHomework1.Search for some rules and regulations set up by the government and explain the core idea as much as possible next period.2.Preview the reading on Page 32.