Unit 3 Environmental Protectionppt课件（含音视频素材）-（2022新）人教版高中英语选择性必修第四册.rar

Unit 3 Environmental Protection1. Whats happening in the photo?The photo is of a large piece of ice breaking off a large glacier or ice sheet. 2. Where do you think this photo was taken?This photo was taken in either the Arctic or Antarctica.3. What does this photo make you think of?The photo makes me think of the problem of global warming. Look and discuss BeforePre-reading: Lead inWhat happened to the polar bear in the video?Pre-reading: Lead in What other consequences may global warming bring about?Global warminganimals dyingthe rise of sea levelunpredictable future of humancoastal cities submerged economic lossesextreme weathernatural disastersCLIMATE CHANGE REQUIRES THE WORLDS ATTENTIONWhile-reading: read for the text type 1. Whats the type of this text? A. News report. B. Biography. C. Expository essay. D. Argumentation.2. Whats its purpose?A. To inform readers of climate change. B. To persuade readers to focus on climate change problem.anomalyn./nmli/athing,situation,etc.thatisdifferentfromwhatisnormalorexpectedincrease gradually/ steadilyincrease sharplyThe graph shows the changes of global surface temperature over the period from 1920 to 2016. While-reading: make a prediction1. What is the graph about? What information can you get from it?2. What do you think might have caused the polar bears death?1.Read the passage and match the main idea with each paragraph.Para.1 A. We need to do something to reduce greenhouse gas emissions.Para.2 B. The rise in temperature has caused natural disasters.Para.3 C. Earth is getting warmer and warmer.Para.4 D. A dead polar bear was found，which alarmed some experts.Para.5 E. Why is Earth getting warmer and warmer?While-reading: read for the structure evidenceconsequencescauseExpository essayExpository essayExpository essay Para 1 &2 The _ of dramatic climate change that had an impact on Earths ecology. Para 3The _ of the increase in the global average surface temperature. Para 4 The _ of the rise in temperature. Para 5The _ to reducing greenhouse gas emissions.Evidence Cause Consequences solutionsSolutions The _ is getting warmer and warmer. Evidence one: _Evidence two: _Evidence three: _a warming ocean and atmosphere Read paragraph one, and fill in the blanks. What evidence of climate change can you find in the first paragraph?Earthmelting icerising sea levelsWhile-reading: read for the content Cause and effectclimate changeits dead body foundbears couldnt hunt had to travel greater distances to find foodlow sea-ice levelsstarved to deathRead paragraph two, and put them in order.While-reading: read for the content Greenhouse EffecGreenhouse Effect tPeople produce huge amounts of extra greenhouse gases by burning fossil fuels.Heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation. the 3rd paragraphA key climate process called the greenhouse effect A big problemDefinitionman-made keeping Earths climate warm and habitable FunctionDefinitionnaturalMore heat energy is trapped in the atmosphere and causes Earths surface temperature to rise quickly.While-reading: read for the content What are the consequences of global temperature rise? Finish the mind map below.The rise in temperature led to example resultsextreme rainstorms, heat wavesserious damage, costing human lives, economic lossesextreme weather/ natural disastersPart 3 (Para.4) The consequencesPart 4 (Para. 5) The solutionsGovernments Make policiesTake appropriate actions and measuresIndividuals Reduce our carbon footprint by restricting the amount of carbon dioxide our lifestyles produce Educate everyone about global warming, along with its causes and impactsWhat is a question left at the end?While-reading: read for the content Discussion What will you do to help?Choose energy-efficient products.Reduce your food waste.Buy products made with recycled content.Continue to use greener transportation. Use water efficiently.Take shorter showers.Get involved. Plant more trees wherever you can.Share your knowledge! We all contribute to climate change and can make a difference by changing our own behaviors.Read for language featuresWhat writing techniques does the author use in the passage?a grapha photoThe “natural greenhouse effect” refers to Without this process, earth could not sustain life. However, the “man-made greenhouse effect” has now become a big problem explanation, comparisonAccording to the scientists who found An expert who has studied polar bears said thatExperts claim thatClimate scientists have warned that if wescientists and experts quotesGovernments need to consider making policies and taking appropriate actions and measures We as individuals can also reduce our “carbon footprint” by . examplesSo what will you do to help?raise a question at the end of the article for readers to think aboutWriting purposes: To inform readers of global warming, convince and inspire them to do whatever they can do to deal with this problem.Group discussionGroup discussionCritical thinkingCritical thinkingEarth provides enough to satisfy every mans needs, but not every mans greed. Mohandas K. GandhiWhat is the difference between “needs” and “greed”? How do you understand the quote? Nature has evolved to provide enough to satisfy the basic needs of all living things. However, nature cannot provide enough to satisfy everyones greed, because greed is a desire that can never be satisfied. An interview A journalist from England is visiting Li Huas community. He/She is now interviewing Li Hua, a senior high school student. They are talking about the environmental problems in the community. The journalist : I am from England. May I ask you some questions about the state of the environment in your community? Li Hua: Of courseThe journalist : What environmental problems does your community have?Li Hua: The journalist : What have residents done to solve the problem?Li Hua: 一些居民强烈建议安装高清摄像头。 那些乱扔垃圾的人应该被罚款。有必要采取严格的措施和执行一些规定。 The journalist : Who do you think should take responsibility for dealing with the problem? What can you do to protect the environment?Li Hua: The journalist : Do you think climate change is the result of human activities? Give your reasons. Li Hua： 一些居民经常随地扔垃圾。这种情况是如此的可怕，以至于很多人都无法忍受。每个人都应该对自己的行为负责。就我个人而言，我更喜欢购买可回收的产品。我确实认为气候变化是人类活动的结果，因为大多数科学家也这么认为，而且全球气温随着全球排放和人口的增加而上升。 high definition camera 高清摄摄像头头 Situation 1 (with example answers): The journalist : I am from England. May I ask you some questions about the state of the environment in your community? Li Hua: Of courseThe journalist : What environmental problems does your community have?Li Hua: 一些居民经常随地扔垃圾。这种情况是如此的可怕，以至于很多人都无法忍受。The journalist : What have residents done to solve the problem?Li Hua: Some residents frequently drop garbage everywhere. The situation is so terrible that dozens of people cant tolerate it. 一些居民强烈建议安装高清摄像头。 那些乱扔垃圾的人应该被罚款。有必要采取严格的措施和执行一些规定。 Some residents strongly recommend that high definition camera should be installed. Those caught throwing garbage about should be fined. Its necessary to take strict measures and carry out some regulations.The journalist : Who do you think should take responsibility for dealing with the problem? What can you do to protect the environment?Li Hua: The journalist : Do you think climate change is the result of human activities? Give your reasons. Li Hua:The journalist: Thank you so much.每个人都应该对自己的行为负责。就我个人而言，我更喜欢购买可回收的产品。Every person should be responsible for their own behaviour. Personally, I prefer to buy the recycled products. 我确实认为气候变化是人类活动的结果，因为大多数科学家也这么认为，而且全球气温随着全球排放和人口的增加而上升。 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 emissions and population.感谢谢聆听