课堂新坐标教师用书高中英语 Unit 20 New Frontiers教案 北师大版选修7.docx

1、课堂新坐标教师用书高中英语 Unit 20 New Frontiers教案 北师大版选修7Unit 20New Frontiers【美文阅读】Our world in 2050尽管人类在改造大自然方面已取得了不少成绩，但是人类频繁的活动已使今日的地球失去了原有的艳丽姿色。When scientists scan the global horizon，overfishing，loss of species habitat，water shortage，climate change，and invasive(侵害的)species look to be the biggest threats to

2、 the earth.What will our world be like in 2050?Population decrease and increaseThere are two features in the growth of world population.First，the annual increase in population in 15 European countries，in the past few years，has European countries will decrease from the current 0.72 billion to 0.63 bi

3、llion.Second，the population in developing countries is growing rapidly.Over the past 50 years，the rate of increase in population has been fastest in the least developed countries.By 2050，the population of Africa is expected to reach 1.8 billion,0.9 billion more than its current population.Global war

4、mingA recent research report indicates that it is quite possible that the Earths temperature is rising well above the previous estimate.Such a result would have severe consequences(后果)A research team from the University of Colorado used satellite data to estimate that the ice sheet will lose up to 4

5、8 cubic miles by 2050.Ice shelves in the Antarctic will have decreased by more than 7,200 square miles in the next four decades.Water shortageAfricas rivers face dramatic(戏剧性的) change that will leave a quarter of the continent severely short of water by the middle of the century.“In those areas wher

6、e there is already a water shortage，its going to have a devastating(毁灭性的) effect，”the study says.“If youre now walking 5 km to the nearest stream to get water，by 2050，its going to mean walking 30 km or moving your whole household closer to the water source.”Four wheels good，four wheels badThe car ha

7、s transformed the lives of people，but the planet is paying too high a price.Today there are 620 million private cars worldwide，to say nothing of buses，vans and lorries.With current growth trends，that number is expected to reach a staggering(难以置信的) three billion cars worldwide by 2050.If we continue

8、to burn fossil fuels at current rates，levels of carbon dioxide in the atmosphere will reach 550 ppm (parts per million) by around 2050.This will increase global temperatures between 1.4 and 4.8 by 2050，and sea levels will rise between 0.09 and 0.78 meters.【诱思导学】1Who do you think is the last killer f

9、or our earth? 2What results will be caused if the number of private cars rapidly increases? 【答案】1.I think man is the last killer.2Burning more fossil fuels，in creasing carbon dioxide and causing the Earths temperature rising.Period Previewing(教师用书独具)教学目标本课时主要是通过学生对学案所给出的内容的学习，了解本课文中所出现的词汇，初步了解课文以及相关

10、的背景知识，对下一堂课就课文的全面理解起到一个铺垫作用。教学地位本单元是让学生通过探讨主要介绍了跟我们生活与学习联系紧密的科学领域，并且介绍了20世纪科学领域的一些先驱者以及太空：最后的疆界。通过本节的学习，使学生对未来的世界这一话题既感到陌生，但又显示出浓厚的兴趣和求知欲，从而带着好奇心去了解并探究。此外，上好本堂课会增进学生了解科学对未来影响做出的展望。(教师用书独具)新课导入建议用多媒体向学生展示一段有关未来的科幻英语短片，如阿凡达、黑客帝国。老师问学生一些问题，如你们知道未来的生活是什么样子？让学生讨论并用英语简单表达出来，从而引出今天的单元话题。教学流程设计导入新课。学生阅读“美文阅

11、读”与“诱思导学”(见学案第27页)。学生就“美文阅读”进行讨论，统一答案。让学生快速阅读课文，(见课本第20页)并完成“篇章结构”(见学案第28页)。师生共同讨论并统一答案。学生再次阅读课文(课本第20页)并完成“语篇理解”(见学案第28页)。学生共同讨论，并让学生发表各自见解，最后统一答案。学生再次仔细阅读课文，(课本第20页)进行深度理解，并完成“课文缩写”(见学案第28页)。老师指导学生讨论，共同找出答案。让学生完成“知识初探”部分(见学案第29页)。学生讨论，并让学生代表发表他们讨论得出的答案。老师予以更正。让学生根据所给出的表格进行自我评估(见学案第29页)。老师布置作业，让学生看

12、课本第20页课文并完成课本第20页2、34题，预习学案Period (见学案第30页)。让学生课下写一篇有关未来科学发展对社会影响的短文。.篇章结构阅读Modern Heroes完成下列表格About the futurePeople have always wondered about the future.Some like to read fantasy stories and others write about the future themselves.While some people who plan the future of the world 1. are called

13、futurologists.They hold a seminar to discuss the 2. of the future.Heres what they are predicting：TimePredictionsIn the next few yearsComputers will become 3. .We can use 4. to give instructions.By the year 2015The clothing industry will have produced new types of material that will remain 5. whateve

14、r you spill on them and garments will never get old and worn.By the year 2025No one will die of 6 and live on welfare.People will live together in peace and 7. .By the year 2030People will live for at least 150 years in 8. .Tiny insectlike robots will be sent around the cells of our bodies to help k

15、eep us healthy.By the middle of the centuryComputers will be millions of times smarter than us.A new type of electronic 9. might have developed.By the end of the centuryWe will have discovered other places in the 10. for living and ways to go further into space.【答案】1.for a living2.endless possibilit

16、ies3.handier4.our voices5.stainless6.starvation7.equality8theory9.human10.solar system.语篇理解1Which people of the following can be called futurologists?APeople who like to read fantasy stories.BPeople who write about the future themselves.CPeople who plan the future for a living.2What was the most com

17、mon theme in science fiction novels in 19th century?AAdventureBFutureCLove3The futurologists will hold a seminar，aiming to .Adiscuss the endless possibilities of the futureBsolve some problems about energy and natural sourcesCstudy the chances of people setting on other planets4Why will many people

18、want to attend the seminar?ABecause they are curious about the future.BBecause they want to make friends with futurologists.CBecause they dream of starting new enterprises based on the predictions made by futurologists.5What is the prediction by the middle of the century?AA new type of electronic hu

19、man might have developed.BNo one will die of starvation.CGarments will be so strong that they will never get old and worn.【答案】1.C2.B3.A4.C5.A.课文缩写assess；die of starvation；based on；for fun；mass；predict；futurologist；handier；at least；click intoNowadays，1. of people wonder about the future.Some imagine

20、what the world will be like in the future.Some authors even 2. things that have since happened.However，for some people，thinking about the future is not just 3. .They plan the future of the world for a living，who are called 4. .A seminar will be held at Newcastle this weekend.Lots of people will atte

21、nd it with the hope of starting new enterprises 5. the predictions they will hear at the meeting.I 6. the websites of a few futurologists and learnt some predictions.Here are some：By the year 2025，no one will 7. because there will be food for everyone.By the year 2030，people can live for 8. 150 year

22、s.Tiny robots may be sent around the cells of our bodies to 9. our health and carry out repairs to keep us healthy.In the next few years，computers will become 10. .【答案】1.masses2.predict3.for fun4.futurologists5.based on6.clicked into7.die of starvation8.at least9.assess10.handier.词义搭配1assistAin a sh

23、ort time；soon2recreation Bto bring (sth.) up to date3handy Cto evaluate or decide or fix the value of (sth.)4shortly Dto help or aid5update Ea person who is an expert in a special aspect6conflict Fentertainment7assess Gto struggle or fight8specialist Hconvenient to handle or use【答案】1.D2.F3.H4.A5.B6.

24、G7.C8.E.短语填空look into；for fun；based on；die of；live on；no longer；carry out；link.to.1The new film is a novel by Chi Li.2It wont be an easy plan to .3You can your TV your stereo for better sounds.4The government has set up a working party to the problem of drug abuse.5I did it just .6They fish and rice

25、.【答案】1.based on2.carry out3.link；to4.look into5.for fun6.live on.句型背诵1By the year 2015，the clothing industry will have produced new types of material that will remain stainless no matter what you spill on them.到2015年，服装工业将生产出新型的材料，不论什么东西洒到材料上面，都不会留下污点。2Red wine stains will no longer ruin clothes.Gar

26、ments will also be so strong that they will never get old or worn.红酒渍将不再毁掉衣物。衣服也将会结实耐穿，永远不会变旧或磨损。3Some like to read fantasy stories and imagine what the world will be like in 10,50 or even,1,000 years time.有些人喜欢阅读幻想故事，想象世界在10年、50年甚至1 000年后会变成什么样。4By the year 2030，development in biochemistry and medi

27、cal science will have made it theoretically possible for us to live for at least 150 years.到2030年，生物化学和医学的发展将能够在理论上使人类生命延长到至少150岁。5By the middle of the century，computers that are millions of times smarter than us will have been developed.到本世纪中叶，比人类还要聪明几百万倍的计算机就会问世。Period Warmup & Futurology(教师用书独具)教

28、学目标(1)熟记学案中所列出的单词和短语。(2)通过学案中所给出的重点单词和重点短语的学习，让学生能够正确理解和使用这些单词和短语，能够运用这些单词和短语造句。(3)通过对这些词汇的学习能够更深层次的理解课文，并通过课文加深对这些词汇的理解，更加熟练的运用这些词汇。(4)通过对本课文的学习，让学生学会用英语如何写主题介绍文章，以提高学生的书面表达能力。(5)通过对语法的教学让学生能够理解并能够运用这些语法知识，熟练掌握将来时的用法。教学地位单词和短语是构成句子的最小单位，在语言学习中起至关重要的作用，所以理解和正确使用英语单词和短语是英语学习的重点所在。另外，让学生掌握语法知识是学生学好英语的

29、关键，所以应给学生创设一个语境，让学生理解该语法的应用，而不要让学生死记硬背语法条文，应从理解的基础上去运用这些语法。(教师用书独具)新课导入建议T：What is the tomorrows world? Could you predict it? S1：It is possible that we can work at home because of communication industry. S2：Our environment will be clean, people will live longer because of the advanced medicine.S3：Th

30、e speed of computer is more and more fast, so our work and life become easier and faster, for example we can buy everything without leaving home. T：Excellent! You have a good imagination. Today we will learn lesson 1Futurology. (老师让xxx同学读一读他/她写的短文)。教学流程设计老师检查上堂课所布置的作业，检查学生对学案预习的情况。导入新课。让学生就“课堂互动探究”(

31、见学案第30页)进行讨论，让学生各自发表自己的见解，然后让各个讨论组派代表汇报各自讨论结果。让学生针对各自不同的意见展开讨论，然后老师给出详细正确答案。老师针对难点和重点词汇进行讲解，并补充学案中所遗漏的重点词汇，补充一些必要的练习。让学生再次阅读课文(课本第20页)以加深对所学单词与短语的理解。让学生讨论完成“语法精析”(见学案第35页)并让各个讨论组发表各自见解。老师对语法部分给以点拨。让学生掌握本单元语法知识。让学生完成“当堂双基达标”(见学案第36页)。师生共同讨论“当堂双基达标”并给出答案，并对难以理解的或有争议的地方给出详解。自我评估(见学案第36页)。布置作业。让学生完成课本21页7、8、9题，预习学案Period (见学案第37页)。1assist vt.& vi.(P19)帮助；协助He assisted Mr.Brown in designing/to design the new bridge.他协助布朗先生设计那座新桥。I was employed to assist the manager with his duties.我受雇协助经理工