2022-2023学年人教版（2019）选择性必修第三册 Unit 3 Environmental Protection Reading and Thinking 课件 （36张）

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 T

2、HE 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

3、paragraph 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 “natura

4、l” greenhouse effect 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 paragr

5、aph 3, and then answer 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, demo

6、nstrate the creative thinking 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.

7、Why did the author mention the 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 i

8、nform the reader and inspire them 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?

9、 Make a list. 2. What should we do to slow the progress of global warming?Post-reading: Think and discuss3. Its said that Zhengzhou flood on July 20 is a microcosm (缩影) of global warming. Since global warming is unstoppable and irreversible, how shall we face and relieve the impact that extreme disa

10、sters bring?Post-reading: Think and discussLanguage points1melting ice2provide evidence of 3a dramatic change4skin and bones5trap the heat6sustain life7huge amounts of8fossil fuels9pay a high priceLanguage points: Important phrases (P26 P27)正在融化的冰为提供依据 / 证据急剧变化困住热量皮包骨大量的化石燃料维系生命付出巨大的代价10long-lasting

11、 changes11make policies 12seize the opportunity13map out14cause and effectLanguage points: Important phrases (P26 P27)持久的变化抓住机会制定政策规划；安排因果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 along with

12、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 caused

13、 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 surfac

14、e as 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 a

15、nd natural disasters 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_引导,常常跟在order, report, wish, decision, suggestion, bel

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

17、ere and warms Earths surface as short-wave radiation. “天然”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。(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 for a visit next week.3. He cant answer the question _ he got

18、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thatthathowwhatwhetheralong with 连接前后两个主语时，谓语动词应和_那个主语保持一致，即“就远原则”。Language po

19、ints: Important sentences (P26 )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

20、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 am really sorry to have given you so much trouble. He was believed to have been a reporter. I expect to have re

21、ad 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 the 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，这只北极熊像是饿

22、死的。(P26)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 distances in order to find food. 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，于是它只能长途跋涉去寻找食物。(P26)caused by climate change在句中作_。Language points: Importa

23、nt sentences (P26 )后置定语句式分析1. Prices of daily goods _ (buy) through a computer can be lower than store prices.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: I

24、mportant sentences 即学即用boughtpaidsoundsv-ing 短语在句子中作_。Language points: Important sentences (P27)结果状语句式分析6. Greenhouse 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部分热量，从而使地球保持气候温暖、适宜居住。(P27)1. _ (con

25、sider) the reasons mentioned above, we should take effective measures to protect 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Consideringthinking

26、Not having received7. There is strong and comprehensive evidence _ the rise in temperature 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“-wide”表示 “范围内的（地）” state