Unit 3 Environmental Protection 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、1Unit 3ENVIRONMENTAL PROTECTION2Protecting wildlife means protecting human beings themselves!保护野生动物就是保护人类自己！保护野生动物就是保护人类自己！It is glorious to love animals and shameful to abuse them.爱护动物光荣，虐待动物可耻。爱护动物光荣，虐待动物可耻。Losing the ecological balance makes it difficult for human beings to take any steps.失去生态平衡，

2、人类寸步难行。失去生态平衡，人类寸步难行。Dont let our tears become the last drop of water on the earth.不要让我们的眼泪成为地球上的最后一滴水。不要让我们的眼泪成为地球上的最后一滴水。3Reading and Thinking41.DiscussingLook at the following pictures and discuss what you know about the phenomena._52.PredictingLook at the photos and the title of the passage on P

3、ages 26-27 and predict what the text is probably about._The text is mainly about the effects human beings have on wildlife and the environment.61.First readingRead the text carefully and answer the following questions.(1)Match the main idea with each paragraph.Para.1 A.The increase in temperature ha

4、d an impact on Earths ecology.Para.2 B.The rise in temperature leads to extreme weather and natural disasters.Para.3 C.A dramatic change in global climate.Para.4 D.Its high time people paid attention and took measures to reduce greenhouse gas emissions.Para.5 E.The greenhouse effect is causing the i

5、ncrease in temperature.答案Para.1 CPara.2 APara.3 EPara.4 BPara.5 D7(2)Read for details.What happened in 2013 according to the passage?_How does the “natural greenhouse” work?_A polar bear died of hunger on Norways Arctic island of Svalbard.Heat from the sun enters the atmosphere and warms Earths surf

6、ace.The heat is released back into space.Greenhouse gases trap some of the heat，keeping Earths climate warm and habitable.82.Second readingFill in the blanks according to the text.Climate changePhenomenaLow-ice levels caused by climate change meant the bear could not hunt seals as before so that it

7、_ to death.starved9Greenhouse effectThe greenhouse effect has two _.The “natural” greenhouse effect refers to the fact that heat from _ enters the atmosphere and warms Earths _.The heat is _ back into space.Greenhouse gases trap some of the heat，_ Earths climate warm and habitable.The “man-made” one

8、 has become a big problem.Huge amounts of extra greenhouse gases by burning _ trap more heat，causing temperature _ quickly.MeasuresGovernments need to _ and take action and measures.Individuals should reduce “carbon footprint” by _ the amount of carbon dioxide their lifestyles mon meaningsthe sunsur

9、facereleasedkeepingfossil fuelsto risemake policiesrestricting103.Third reading(1)Summarizing: Read the passage again and try to summarize its main idea in one sentence.The passage is about _.(2)Thinking and discussing: Why is the “natural” greenhouse effect of vital importance?_climate change and w

10、hat people should do to deal with itBecause without “natural” greenhouse effect，Earth could not sustain life.Heat from the sun enters the atmosphere and warms Earths surface.The heat is released back into space.Greenhouse gases trap some of the heat，keeping Earths climate warm and habitable.111.Pair

11、 work: Why did the author mention the polar bear in the beginning?_2.What is the authors purpose of writing this passage?_3.You are so much concerned about our living environment.In order to protect the only planet we live on，what measures will you take in your daily life?_Because he/she wants to em

12、phasize the great damage caused by climate change.To make people become aware of the urgency of environmental protection and take immediate actions.The answer is open.12阅读技巧点拨观点、态度题应对策略寻找带有强烈感情色彩的名词、动词、形容词或者副词来判断作者态度；段中含有“but，yet，however，nevertheless，as a matter of fact”等表示转折关系的词时，这句话通常表达作者的观点；说明性短文

13、，由于说明文本身的客观性，通常情况下作者所持的态度是中立的；记叙类短文，作者的观点不会很明显地表现出来，但是会暗含于陈述的语句之中。131.分析句中that的用法There is little doubt that Earth is getting warmer and warmer._2.把下面句子改为直接引语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._

14、_连词that引导同位语从句，对doubt作进一步的解释和说明。An expert who has studied polar bears for many years said，“From the position of its dead body，the bear appeared to have starved and died.”143.替换加黑的词Without the process，Earth could not sustain life._4.分析下面句子的结构Climate scientists have warned that if we do not take appropriate actions，this warming trend will probably continue and there will be a higher price to pay._But for本句是由that引导的宾语从句，从句中又包含一个由if引导的条件状语从句。