人教新课标高中英语选修六Unit4Reading教案
高中英语Unit4第1课时reading学案新人教版选修6
Unit 4 Global Warmi ng Period 1 readi ngLear ning aims: 1. Know well the global warmi ng2. En able the stude nts to talk about differe nt sources of en ergy.I mportant point: Learning about effect the global warming brings human being.Difficult point: To improve the skills of readi ng.使用说明及学法指导：1.通过阅读课本P25-27，完成预习案。
2.完成时间：30分钟。
预习案Previewing CaseTask 1 Divide the text i nto 4 parts and match the idea of each part.Part 1(Para __) Two differe nt attitudes among scie ntists towards global warmi ng.Part 2 (Para __ to __) Whether people should do someth ing about global warmi ng or n ot.Part 3 (Para __to _) How global warm ing comes about.Part 4 (Para __) In troduce a debate over the issue of global warm ing.Task 2 Careful readi ngPart 1 1) Who wrote the magaz ine article? What is the n ame of the magaz ine?Part 2 2) What are graph 1 about? _____________________________________________________________3) What is the reas on of the in crease in the earth ' s temperature?4) What will happe n if we add qua ntities of carb on dioxide into the atmosphere?Task 3 True or False (Finish P27 Comprehending 2)Task 4语法填空There is no doubt that the earth is beco ming 1 ______ (warm). But how has this come aboutand does it matter? People have fierce debates about whether 2 ______ i s huma n activity thathas caused this global warming, 3 _______________ (compare) with most of the natural changes. Manyscie ntists 4 ___ Dr. Janice Foster believe that people have caused the in crease in the earth ' s temperature 5 ____ burning fossil fuels like coal, natural gas and oil to produce energy. Somebyproducts of this process a re called “greenhouse” gases, the most important one of 6_____ i s carb on dioxide. The in -creased amount of carb on dioxide means that more heat en ergy7 _________ (trap ・)in the atmosphere 8 __________ (cause) the global temperature to go up. Onthe other hand, some scientists predict that any warming will be mild with few bad 9__________ (en vir onment) con seque nces. An yhow, eve n if we start reduc ing 10 amount of carb on dioxideand other gree nhouse gases, the climate is going to keep on warm ing for decades or cen turies.探究案Exploring Case探究一Read and choose the best answer1. What's the main idea of the article?A. It talks about differe nt ideas of global warm ingB. It talks about the causes of globalwarmi ngC. It talks about the effects of global warmi ngD. all th e above2. In Para. 5 , “but it could be as high as 5 degrees ”here “ it ” refers to _________A. the dataB. the amount of global warmi ngC. the burning o f fossil fuelsD. the in creased carb on dioxide3. Which stateme nt is FALSE? ______A. During the 20th cen tury, the temperature in creased.B. Natural gas is s a byproduct of burning fossil fuelsC. Betwee n 1957 and 1997 Charls Keeli ng measured the amount of carb on dioxide in the atmosphere. \D. Some scientists think if the amount of greenhouse gases continues to rise, we will facea global catastrophe.4. From the article, we can infer that ______A. the earth has become warmer since early 20th cen turyB. the in creased carb on dioxide is the only reas on for global warmi ngC. some scie ntists thi nk the sea level will rise as a result of global warm ing.D. The issue of global warm ing will con ti nue to be discussed.探究二难句翻译1. There is no doubt that the earth is beco ming warmer and that i t is huma n activity thathas caused this global warm ing rather tha n a ran dom but n atural phe nomenon.2. All the scie ntists subscribe to the view that the in crease in the earth ' s temperature is due to the burning of fossil fuels like coal, n atural gas and oil to produce en ergy3. Without the ‘ greenhouse effect ' , the earth would be about thirty-three degrees Celsius cooler tha n it is.探究三Discussion :What are the effects of global warming? Please list effectsn egativeeffect: __________________________________________________________________________ positive 训练案Find these phrases in t he text1产生____________________ 2 毫无疑问____________________ 3 而不是________________________4赞同___________________ 5因为；由于 ___________________ 6 少量的气体______________________effect :7大量的_________________ 8容易被困___________________________________ 9上升___________________10导致___________________ 11 一方面，另一方面，. ___________________________12反对___________________ 13 更大范围的动物___________________________________14在大气中聚集____________________________________ 15持续变暖___________________________________ 16在未来的几十年和几个世纪内_________________________________3。
高中英语 Unit4 第1课时 reading学案 新人教版选修6
高中英语 Unit4 第1课时 reading学案新人教版选修6Warming Period1 reading Learning aims:1、Know well the global warming2、 Enable the students to talk about different sources of energy、Important point: Learning about effect the global warming brings human being、Difficult point: To improve the skills of reading、使用说明及学法指导：1、通过阅读课本P25-27，完成预习案。
2、完成时间：30分钟。
预习案 Previewing CaseTask1 Divide the text into4 parts and match the idea of each part、Part1(Para __)Two different attitudes among scientists towards global warming、 Part2 (Para __ to __)Whether people should do something about global warming or not、 Part3 (Para __to _)How global warming comes about、Part4 (Para __)Introduce a debate over the issue of global warming、Task2 Careful readingPart11)Who wrote the magazine article? What is the name of the magazine? ______________ _________________Part22) What are graph1about?___________________________________________________ ___________3)What is the reason of the increase in the earth’s temperature?_________________________________________________________ ________________________________4)What will happen if we add quantities of carbon dioxide into theatmosphere?______________________________________________ ___________________________________________Part3: List Charls Keelin g’s, Dr、Janice Foster’s & George Hambley ‘s the ideasCharls KeelingDr、 Janice Foster George HambleyGraph2 shows that carbon dioxide content of the atmosphere5)_________From1957 to1997、Carbon dioxide has caused the global temperature to6)________、 An increase of five degrees would bea7)_________ and could be8)______________、More carbon dioxide is a9)__________ thing,which makescrops10)__________ more and will en-courage11)______________________、Task3 True or False (Finish P27 Comprehending2)Task4 语法填空There is no doubt that the earth is becoming1 ________(warm)、 But how has this come about and does it matter? People have fierce debates about whether2 ______is human activitythat has caused this global warming,3 ___________ (compare)with most of the natural changes、 Many scientists4 _____Dr、 Janice Foster believe that people have caused the increase in the earth’s temperature5 ___ burning fossil fuels like coal, natural gas and oil to produce energy、 Some byproducts of this process are called “greenhouse” gases, the most important one of6 ______is carbon dioxide、 The increased amount of carbon dioxide means that more heat energy7 _________ (trap)in the atmosphere8 ________ (cause)the global temperature to go up、 On the other hand, some scientists predict that any warming will be mild with few bad9 ____________(environment)consequences、 Anyhow, even if we start reducing10____ amount of carbon dioxide and other greenhouse gases,the climate is going to keep on warming for decades or centuries、我的疑惑探究案 Exploring Case探究一Read and choose the best answer1、What’s the main idea of the article?A、 It talks about different ideas of global warmingB、 It talks about the causes of global warmingC、 It talks about the effects of global warmingD、 all the above2、 In Para、5 , “but it could be as high as5 degrees” here “it ” refers to _____A、 the dataB、 the amount of global warmingC、 the burning o f fossil fuelsD、 the increased carbon dioxide3、Which statement is FALSE? ________A、 During the20th century, the temperature increased、B、 Natural gas is s a byproduct of burning fossil fuelsC、 Between1957 and1997 Charls Keeling measured the amount of carbon dioxide in the atmosphere、 \D、 Some scientists think if the amount of greenhouse gases continues to rise, we will face a global catastrophe、4、From the article, we can infer that________A、 the earth has become warmer since early20th centuryB、 the increased carbon dioxide is the only reason for global warmingC、 some scientists think the sea level will rise as a result of global warming、D、 The issue of global warming will continue to be discussed、探究二难句翻译1、There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon、_________________________________________________________ _________________________________________________________ _________________________________________________________ _______2、 All the scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produceenergy___________________________________________________ _________________________________________________________ _________________________________________________________ _____________3、Without the ‘greenhouse effect’, the earth would be about thirty-three degrees Celsius cooler than it is、_________________________________________________________ ________________________________探究三Discussion :What are the effects of global warming? Please list effectsnegativeeffect:__________________________________________________ _________________________________________________________ _________________________________________________________ _positiveeffect :_________________________________________________ _________________________________________________________ _________________________________________________________ __训练案 Find these phrases in the text1 产生_________________2毫无疑问_________________3 而不是_________________4赞同 _________________5 因为;由于_________________6 少量的气体 _________________7 大量的_______________8 容易被困_______________________________9 上升 _________________10 导致 _________________11 一方面… 另一方面…、___________________________12 反对_________________13 更大范围的动物____________________________14 在大气中聚集____________________________15 持续变暖____________________________16 在未来的几年和几个世纪内____________________________。
高中英语人教版选修六Unit4 Warming up、Pre-reading、Reading、Comprehending教案
Teaching PlanModule 6 Unit 4---Global Warming Teaching aims: 1. Get the students to know more about global warming.2. Help students raise their awareness of saving energyand protecting the environment.3. Develop students listening and speaking skills. Teaching approach: task-based, student-centeredTeaching aid: a multifunctional computerTeaching procedure:Step 1 Leading-inShow a picture of the earth being burned by fossil fuel to arouse students’interest in the topic.Step 2 Warming-up1.Pictures of some problems caused by global warming, such as lakesgoing dry, disappearing island, heavy snow and floods.2.Question: What is to blame? (Global warming)Step 3 Listening1.Task one: watch a video explaining global warming and try tounderstand it.2.Help students get familiar with the greenhouse effect.3.Task two: fill in the blanks with proper words. (for a betterunderstanding of greenhouse effect and global warming)Step 4 Speaking1.Questions: Is global warming a natural phenomenon or caused byhuman activities? What human activities cause global warming?2.Task three: discussionDoes global warming matter to you? What are the bad effects of global warming?3.Student presentation (If the temperature of the world rose by 1℃,what would happen?)4.Watch an episode of a BBC Glacier program.Step 5 Consolidation1. Task four: group workWhat can we do about the problem as students?2.Student presentation3. Call on students to save energy and protect the environment, to start from very little bit to fight global warming.Step 6 AssignmentSurf the Internet for more information on global warming and design a slogan of protecting the environment.习题：一:单项填空1．________ with the size of the whole earth, the biggest ocean does not seem big at all.A. CompareB. When comparingC. ComparingD. When compared2．Please tell me how the accident_____. I am still in the dark.A. came byB. came outC. came toD. came about3．The accident ______ the death of two passengers.A. resulted fromB. resulted inC. resulted ofD. resulted with4．It is in the west of China _____ there is no doubt _____it is going to rain tomorrow.A. where; whetherB. that; thatC. that; whetherD. where; that5．It was 1969___ the American astronauts succeeded in landing on the moon.A. thatB.whenC. on whichD. which6．It was ______ back home after the experiment.A. not until midnight did he goB. until midnight that he didn’t goC. not until midnight that he wentD. until midnight when he didn’t go7．There's some doubt ____he'll keep his promise.A. whetherB. ifC. thatD. which8. The _____ parents were all _____for the children's safety.A. concerned; concernedB. concerned; concerningC. concerning; concerningD. concerning; concerned9. The students ages ____ 15 to 18.A. rangeB. rangedC. range fromD. ranges from10. _______, we’ll go camping.A. weather permitsB. If weather will permitC. weather permittingD. weather permitted11.______, we would have not finished the work on time.A. If you didn’t help usB. without your helpC. without youD. with your help12. ---I will not come here tomorrow.--- _____________to me, because I don’t car e.A．It doesn’t make any differenceB. It makes much differenceC.It doesn’t make no differenceD. D. It makes a difference13. You can go out, _________you promise to be back before 11 o'clock.A. as far asB. so far asC. whenD. as / so long as14. －I apologize for not being able to join you for dinner.－____.We’ll get together later.A. Go aheadB. Not to worryC. That’s rightD. Don’t mention it15. .Christmas is _____ special holiday when _______ whole family are supposed to get together.A. the, theB. a, aC. the, aD. a, the二：完形填空：阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项Many years ago, I owned a service station and roadhouse on the main road between Melbourne and Adelaide.One very cold, wet night at about 3:30 a.m., there was a 16 on the frontdoor of our house. A young man, wet from 17 to toe, explained that he had 18 out of petrol about 30 km up the road. He had left his pregnant(怀孕的) wife and his two children 19 at the car and said that he would hitchhike(搭便车) back.Once I had 20 a can with petrol, I took him back to his car where his two-year-old and four-year-old children were both 21 , saying that they were cold. Once the car had started, I suggested that he 22 me back.Before leaving, I had turned the heater 23 in the roadhouse, so that when we went in, it was nice and 24 .While the little ones played and ran 25 ,I prepared bread and butter for the children, and hot chocolate for the 26 .It was about 5 a.m. before they 27 .The young fellow asked me how much he 28 me and I told him that the petrol pump(加油泵) had 29 $15.He offered to pay “call-out fee”, but I wouldn’t accept it.About a month later, I received a 30 from Interstate, a large bus company that we had been trying to 31 to stop off at our roadhouse for a long time. It 32 out that the young fellow I had helped was its general manager, the most 33 person in the company.In his letter, he thanked me again and 34 me that, from then on, all their buses would stop at my service station. In this 35 , a little bit of kindness was rewarded with a huge amount of benefits.16. A. kick B.hit C.beat D.knock17. A. finger B.shoulder C.head D.hand18. A. driven ed e D.run19. A. away B.behind C.over D.out20. A.supplied B.poured C.equipped D.filled21. A.sleeping B.crying C.quarrelling D.fighting22. A.allow B.ring C.lead D.follow23. A.on B.off C.in D.over24. A.neat B.hot C.warm D.attractive25. A.around B.inside C.nearby D.along26. A.drivers B.guests C.customers D.adults27. A.left B.arrived C.ate D.disappeared28. A.gave B.paid C.owed D.offered29. A.appeared B.exhibited C.calculated D.shown30. A.call B.letter C.check D.notice31. A.get B.force C.requite D.hope32. A.pointed B.turned C.worked D.found33. A.generous B.successful C.serious D.powerful34. A.praised B.persuaded rmed D.convinced35. A.lesson B.business C.aspect D.case。
人教版高中英语选修六：Unit4教案+
Unit4 Global warming一、学生分析本堂课所教学生为高二文科班的学生，积极和活跃是他们在课堂学习实践活动中的特点。
大部分学生经过初中和高一阶段对英语这门语言的学习和掌握，已经为高二阶段的英语学习打下了较好的基础。
表现为：大部分学生能够做到课前预习和准备，课堂上能伴随课程的思路，积极主动的参与课堂活动，如小组讨论，问答练习等；并且部分学生都具有一定的自我约束能力和独立思考的能力，如对某一问题进行讨论时除了能够完成对问题的回答，还能够提出反问甚至是自己独特的见解等。
但是仍有一小部分学生由于种种原因造成了英语基础薄弱，上课不够积极主动，学习任务完成不充分等问题。
对此，在课堂活动中要进行有针对性的帮助。
如进行分组讨论时，可让他们与学习基础好的同学一组且要给予更多的鼓励，使他们尽早能提高对学习英语的兴趣。
本堂课之前学生们已经完成了对Model 6 Unit3 A healthy life 的学习任务，对健康生活的真正涵义也有了一定的理解。
因而在本堂课的引入环节中就结合这个内容进行了设问。
如“健康生活需不需要保护环境呢？”等。
且学生在这一单元以及之前所掌握的英语语言知识技能如：环境和健康的关系；如何开展讨论；如何发表自己的观点等都可以运用到本节课中。
二、本节课教材分析与教材整合1. 单元教材分析本单元以Global warming 为主题，学生通过单元教学经过思考、学习，讨论从而认识到全球变暖的真正涵义和它所带来的种种后果。
同时学生能够进一步认识我们的地球所面临的其它严重问题，激发学生的环保意识。
引导学生运用所学语言知识、句式表达自己对这些现象的看法，培养他们为自己的观点辩论的能力。
Warming Up通过真实的图片再现，使学生对能源的用途和种类有一个基本的了解。
从而为本单元主题Global warming 作了很好的铺垫。
Pre-reading部分组织学生对这些问题的讨论、回答，也让学生有进一步思考的空间，为下一步阅读做好准备。
人教高中英语选修六：unit4+教学设计.doc
选修6 Unit 4 Global warming 教学设计The Second Period ReadingTeaching goals 教学目标1. Target language 目标语言a. 重点词汇和短语compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build upb. 重点句式There is no doubt that the earth is becoming warmer. P26Without the‘greenhouse effect’, the earth would be about thirty-three degrees Celsius cooler than it is. P26They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. P262. Ability goals 能力目标Enable the students to talk about the causes and effects of global warming.3. Learning ability goals 学能目标Help the students learn how to talk about the causes and effects of global warming and express ideas about what people should do about it.Teaching important points教学重点Help the students learn how to debate over the topic “We should do nothing about global warming.”Teaching difficult points 教学难点Enable the students to learn the writing skills of the text and get a better understanding of articles of this kind.Teaching methods 教学方法Listening, reading and group work.Teaching aids 教具准备A recorder and a computer.Teaching procedures & ways 教学过程与方式Step ⅠRevisionCheck the homework.Review the useful expressions about agreement and disagreement.Show the students some pictures on the screen. The students have to give names of different energy sources relative to the pictures and deicide which energy sources are renewable and which are not. Then ask the students to tell the effects of using these energy sources. Step Ⅱ Pre-readingShow a picture of greenhouse on the screen.T: Now look at the picture. What is it in the picture?S: A greenhouse.T: Right. Who can tell me what it is used for?Sa: A greenhouse is made of glass and is used for growing plants, especially during cold weather.T: Yes, you are right. And how does it work?Sb: The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.T: Exactly. Thank you. But today we are not going to talk about greenhouse, we’ll talk about greenhouse gases. Have you heard about this before?Sc: I know. In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane and water vapor.T: That’s correct. Then what do you think greenhouse gases do?Sd: Let me explain it. They trap heat from the sun and therefore warm the earth.T: Yes. Last class we talked about the effects of burning fossil fuels. One of the effects is more and more carbon dioxide is being produced, which in turn increases the speed of global warming. Does it matter? What’re your opinions? Next we’ll read an article “THE EARTH IS BECOMING WARMER —BUT DOES IT MATTER?”Step Ⅲ While-readingGet the students to read the passage fast and meanwhile help the students form a good habit of reading.T: What do you think will be talked abo ut at the sight of the title “THE EARTH IS BECOMING WARMER —BUT DOES IT MATTER?” Now please skim the passage to obtain a general idea of the whole passage. While reading, pay attention to the writing skills and if possible, divide the whole passage into several parts and summarize the main idea for each part. After a few minutes.T: How many parts can this text be divided into?T: Any different ideas? OK. Now let’s finish the form on the screen.Show the form on the screen and let the students complete the form.Main ideas of each part Writing techniquesStep Ⅳ ComprehendingLet the students read the passage again to find out the answers to the questions in Exercises 1 and 2.T: Now let’s listen to th e tape. While listening, pay more attention to specific information. Then read the whole passage by yourselves. Try to find out the answers to questions in Exercises 1 and 2. You may work in groups.Step Ⅴ DebateGet the students to debate over the statement: We should do nothing about global warming. Let them work in groups of six to prepare it.T: Now you are going to have a debate: We should do nothing about global warming. Please follow these instructions.Put the following instructions on the screen.● Get into groups of six. Decide which three in your group are going to agree with the statement (Group A) and which three are going to disagree with the statement (Group B).● Group A discuss why they agree with the statement; Group B discuss why they disagree.● Group A and B get together. Tell each other the reasons why agree or disagree with the statement.T: We don’t have time to do it in class. Please finish it after class. Try to collect as much information as possible on the Internet and share it with the others in class. Next class I’ll get some groups to act out your debates.Step Ⅵ Homework1. Read the passage again and review the new words and expressions.2. Prepare the debate in groups.3. Preview Using Language ― WHAT CAN WE DO ABOUT GLOBAL WARMING？精美句子1、善思则能“从无字句处读书”。
高中英语人教版选修六Unit4 Warming up、Pre-reading、Reading、Comprehending教案
The Earth Is Becoming Warmer-Does It Matter( Global Warming-Reading of Unit4 Book6)一．教学分析1.人教版英语选修6unit 4 Reading The earth is becomingwarmer-does it matter2.教学目标1）语言知识：通过本课的学习学生能理解并运用课文中出现的重要单词和词组：random;phenomenon;byproduct;fossil;fuel;tend;trend;quantities of be opposed to ;even if;result in,etc2)语言技能：能在阅读中理解词汇和了解全球变暖的原因及其造成的影响，提高获取信息和提炼信息的能力。
3）语言运用：学完课文后能用所学的语言知识表述全球变暖的因素以及带来的影响。
4）文化意识方面和情感态度：通过文本的阅读，让学生了解全球变暖的原因，从而激发学生的环保的意识。
5）学习策略：学习并运用skimming and scanning 的阅读的方法，训练和提高阅读能力。
、3.教学重难点：1）了解全球变暖的原因和影响；2）阅读方法和技巧的训练以及提高阅读能力。
二．教学设计说明1.学情分析1）学生语言基础不扎实，尤其是词汇的局限直接影响了对文章的理解，所以要求学生做好预习工作，减少语言障碍。
2）地球变暖在其他学科及日常生活中都已有所了解，是学生比较熟悉的话题，但这是一篇杂志文章，语言比较正式，复合句较多，对于基础较弱的学生来说有有一定的难度；所以强调学生要有互相合作‘互相监督和互相学习；，从而促进互相进步。
2.策略设计充分利用班班通多媒体辅助教学，发挥信息技术的作用，丰富教学内容，提高学生的学习兴趣和课堂教学效率。
3.教学方法设计以任务型教学为中心，设计可操作性的任务，驱动学生在自主学习和合作学习中完成预设的阅读任务，领会作者的写作目的和意图。
人教版英语选修六Unit 4 Global Warming(Using Language：Reading and writing)教案
兰州市骨干教师评选教案时间：4月15日地点：兰州新区永登五中高二（4）教室授课教师：桑越茂科目：英语教材：人教版高中英语选修六授课课题：UNIT 4 Using language: Reading and Writing教材分析：1、本单元中心话题是Global warming ，旨在通过本单元教学使学生经过学习认识到全球变暖的起因和它所带来的种种后果，让学生进一步了解地球面临的其它严重问题，帮助学生的树立“节约能源，保护环境”的环保意识，引导学生运用所学语言、句式表达自己对这些现象的看法，培养学生用英语表达自己观点的能力。
2、Reading and Writing部分通过读者和杂志社之间的两封信件，使学生更多地了解作为“地球村”的一员，如何为控制全球变暖做出自己应有的努力。
通过make a poster，write a short passage等不同活动的参与，帮助学生更多地联系自己的生活习惯，树立从自身做起践行环保的观念，这样使课堂的抽象知识变为了社会实践，实现了真正意义上的学以致用。
学情分析：本次教学的实施对象是高二（4）班。
由于学生英语水平参差不齐，学生英语基础薄弱，学生学习英语的困难很大，本节课的教学可以说是一个不小的挑战。
教学理念：坚持“教师为主导，学生为主体，任务为导向”的教学理念；坚持贯彻“教中学，学中用”的实用主义教学理念。
教学方法：学导性教学模式与任务型教学法相结合（基本环节：任务引领——小组合作--交流展示-评价总结）教学目标：1. 知识和技能目标1）知识目标A. 重点词汇和短语： electrical, motor, can (n.), microwave, disagreement, heading, make a difference, put up with, leave an electrical appliance on, so long as等。
B. 重点句式：Together, individuals can make a difference.It takes a lot of energy to make things from new materials. Remember -- your contribution counts‘C.通过学习，让学生更多了解全球变暖现象及成因，以及阻止全球变暖的具体做法。
人教版高中英语选修6 Unit4__Pre-reading__and__Reading__精品教案
Unit4 Pre-reading and Reading精品教案Teaching Goals:1.To read about global warming.2.To get some idea about the effect of global warming.3.To develop some basic reading skills.Teaching Procedures:Step 1. Warming UpPurpose: To arouse Ss interest in learning about global warming.1. Team workAnswer the questions below:(1) Have you ever seen a greenhouse?(2) How does a greenhouse work?(3) What do you think greenhouse gases do?2. Group workLook at the picture, and ask Ss some questions.T: What is this building made of?S1: It’s made of plastic.T: What’s its purpose?S2: Plants can grow in it when it’s cold outside.T: How does it work?S3: The glass traps the heat from the sun, making the air warm so that plants grow better.Step 2. Pre-readingPurpose: To get Ss to learn about greenhouse gases.1. Group workNow look at the word “GREENHOUSE GASES”. What does it mean?Greenhouse gases (GHG) are gaseous components of theatmosphere that contribute to the greenhouse effect .Themajor natural greenhouse gases are water vapor, whichcauses about 36-70% of the greenhouse effect on Earth (not including clouds): carbon dioxide, which causes between 9-26%; and ozone, which causes between 3-7%(note that it is not really possible to assert that such-and-such a gas causes a certain percentage of the GHE, because the influences of the various gases are not additive .The higher ends of the ranges quoted are for the gas alone ;the lower end ,for the gas counting overlaps).Naturally occurring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases.Very powerful greenhouse gases that are not naturally occurring include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), which are generated in a variety of industrial processes.Each greenhouse gas differs in its ability to absorb heat in the atmosphere. HFCs and PFCs are the most heat-absorbent.2. Individual workGet Ss to answer these questions individually. Then let them discuss the answers.(1) Who wrote the magazine article? What is the name of the magazine?(2) What are the names of the three scientists mentioned in the article?(3) What do they think about global warming? Do they agree with one another?(4) What are the two graphs about?(5) What is the main topic of the article?Step 3. Reading1. SkimmingPurpose: To get a brief understanding of the text.Read through the text, preferably the first and the last sentences of each paragraph and write the key sentence of each paragraph.Key sentences of each paragraph:(1) A debate over whether it is human activity that has caused the global warming or whether it is just a natural phenomenon.(2) Many scientists believe people have caused the increase in the earth’s temperature.。
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Unit 4 Global warming Reading Teaching goals Target language words and phrases: energy, light(v.), heat(v.), renewable, non-renewable, run out, compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build up, keep on Ability goals Enable the students to talk about different sources of energy. Enable the students to read the text, understand what it is about and talk about the causes and effects of global warming.
Teaching important & difficult points Enable the students to get a better understanding of articles of this kind. Teaching aids A projector and a blackboard Teaching procedures Step 1 Warming up T：Now let’s look at a picture on the slide and answer the question below.
What is the greenhouse made and used for? A greenhouse is made of glass and is used for growing plants, especially during cold weather. What’s greenhouse effect? Step 2 Scanning Read the text quickly and find the answer to the questions: 1. Who wrote the magazine article? What is the name of the magazine? Sophie Armstrong, Earth Care. 2. What are the names of the three scientists mentioned in the article? Dr Janice Foster, Charles Keeling, George Hambley. 3. What do they think about global warming? Do they agree with one another? They don't agree with each other. Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences.
Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. The first graph shows the temperature increase of one degree Fahrenheit between 1860to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1977. 4. What are the two graphs about? The first graph shows the temperature increase of one degree Fahrenheit between 1860to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1977. 5. What is the main topic of the article? Global warming/ the warming of the earth. Step 3 Skimming Read the passage carefully and judge whether the statements are true or false. 1. The temperature last century didn’t increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes that global warming is caused b the burning fossil fuels. 4. Natural gas is a greenhouse gas. 5. Carbon dioxide is a byproduct of burning fossil fuels. 6. People accept Charles Keeling’s data because he took accurate measurements. 7. Flooding could be one of the effects of future global warming. 8. George Hambley believes scientists are just guessing about the effects of global warming. 9. George Hambley is worried about the effects of carbon dioxide on plant growth. 10. It is clear what the effects of global warming will be. Keys: True: 3, 5, 6, 7, and 8 False: 1, 2, 4, 9, 10 Step 4 Detailed reading Read the text carefully and try to find out how many parts we can divide the text into and find out the main idea of each part.
Part (Para_ to Para_ ) Main idea Part 1 (Para _1_) introduce a debate over the issue of global warming
Part 2 (Para _2__ to _4__) illustrate how global warming comes about Part 3 (Para _5__ to 10___) list two different attitudes among scientists towards global warming Part 4 (Para _11__ to ___) It’s up to readers to think and decide whether people should do something about global warming or not.
Step 5 Debate Get into groups of six. Decide which three in your group are going to agree with the statement and which three are going to disagree with the statement. Group A: We shall do something about global warming. Group B: We shall do nothing about global warming. Group A discuss why they agree with the statement; Group B discuss why they disagree. Group A and B get together. Tell each other the reasons why agree or disagree with the statement. Step 6 Homework 1. Read the passage again and review the new words and expressions. 2. Prepare the debate in groups. 3. Surf the Internet for more information about global warming