Unit 4 Global warming复习学案(教师版)

Book 6 Unit 4 Global Warming语言点学案一、根据课文填空：Despite the fact that the temperature of the earth ________(rise) about one degree ________ (probable) doesn’t seem much to you or me, it is a rapid increase when___________ _______ (与...相比较)other natural changes. _______ ______ ________ __________ ________(毫无疑问) it is human activity and the burning of more and more__________ ___________(化石燃料) _______has_______________ _________ (导致)global warming rather than a______________(随意的) but natural____________________(现象), which all scientists ________________(同意).Some______________(副产品) of burning fossil fuels are called___________________(温室) gases, the most important of__________ is carbon dioxide. When small amounts of gases in the atmosphere like carbon dioxide, _____________(甲烷)and water vapour trap heat from the sun, thus _________ (warm) the earth, it is_______ scientists call “greenhouse effect ” , without ______________, the earth ________________(be) about thirty-three degrees Celsius cooler than it is .However,the problem comes when huge____________ ______ (大量的)extra carbon dioxide__________ (add) into the atmosphere,which means that more heat energy______________ _____ _________________(往往被困住) in the atmosphere___________(cause) the global temperature to_____ ___(上升). It was a scientist ______ was called Charles Keeling______ ______ ______________________(做了准确的测量) of the amount of carbon dioxide in the atmosphere from 1957 to 1977.He found between theses years the carbon dioxide in the atmosphere went up from around 315 parts to around 370 parts per million. This______ (数据) _______________ (accept) by all scientists and they also reach an agreement ___________ it is the burning of fossil fuels ________ has contributed to the increase in carbondioxide.However, attitudes of scientists ___________ this rise are ___________________(complete) different. On the one hand, Dr Foster hold the view that any__________(趋势) in which the temperature increased____ 5 degrees would lead to a ______________(灾难), such as a rise of several meters in the sea level, severe storms, _______ (洪灾),_____________(dry), _____________(饥荒), the spread of diseases and the disappearance of species. On the other hand, George Hambley who_____ _________ ____ (反对)this view _______________(陈述) that any warming will be mild with few bad environmental__________________(后果), which will encourage________________ _________ ____(一些列) animals and make life for human beings better. _________ ________(尽管)we are making great efforts to reduce the amount of carbon dioxide, greenhouse gases continue to build up in the atmosphere and the climate is going to__________ ______(继续)warming for decades or centuries.What can we do about global warming?What can we do about global warming?Ouyang Guang who is doing a project about global warming ___ ________ ___(代表)his school is not sure_________ to start his project. Therefore, he is writing to seek some suggestions from Earth Care on what he can do about global warming. In spite of the fact that he feels________ (个体)have little effect on such huge environmental problems, he still hopes that people should ___________(提倡) _____________(change) the way that people __________________(使用/消耗) energy. The Earth Care subscribes to the view that people_______(have) a __________________ (责任心)have the power to do whatever they can _____________(improve) our environment. They hold the belief that together ____________ _____ _______ __ __________ (个人能起重要的作用)and we don’t have to_____ ____ ______ ____________(忍受污染).Firstly, it makes sense that we should___________ ____ ________ ____________(关闭电器) _____ ___ ____(只要) we’re not using them, which we shouldn’t ____ ______ _______(大意). Besides, it is suggested that we should appeal to people__________ (work)or ride a bike if possible instead of _________ _________ ______(机动车), __________(make) a great difference to cutting the emission of carbon dioxide. Moreover, it is vital that we should try to buy things that _____________(make) of ____________( 回收的) materials and are ______________ ________ with energy(节约能源的产品), such as smaller things like fridges and ___________________(微波炉), which can be of great benefit to reducing energy ________________(减少能源消耗). What’s more, it is high time that we ________ (recycle)things like cans, bottles and newspapers if________________ (条件)allow us to. By ___________ ________ ________ materials that can be___________(充分利用可循环使用的材料) , everybody can play a part in saving energy. In addition, it is advisable that we should plant trees for the reason that trees can _____________( 吸收)CO2 from the air and ______ _______ _________（使你精神振奋）when we look at them. Last but not least, it should be kept in mind that we could be an _____________(教育者) to help people to ________________________________________________(提高人们的环保意识).Only when everyone _________ ____________ ___________ environmental protection (参与环境保护) can our _________________ ______________(贡献才有价值).Task one: Important sentences patterns：It is a rapid increase when compared with/to other natural changes.1. 与…比起来；较之(作状语)把A和B相比较(作谓语)把A比作B___________ renewable energy, non-renewable energy can be used up easily.Citizens feel like _________ our school ____ YD Middle school. _____________ YD middle school, ours is more beautiful with advanced teaching equipment and _____________ the cradle of YD’s civilization.(文化的摇篮) 2.强调句与其他从句连用的情况：It is the fact__________ nobody subscribes to his opinion_________resulted in his desperation/despair.It is the data___________was offered by the government________showed a huge quantity of animals is dying out. It is in the bookstore________ I often go to buy books________ we met for the first time.It was Charles Keeling________ is always bad-tempered_________committed the mistake.It was__________the world war II broke out in 1936________ they were recruited into the army(被招收入伍). Task2 :利用字典或练习册找出以下词汇词性转换、搭配、也可以摘抄一些好的例句等,并把它写到笔记本上一、名词1. 现象n.________________；（复数________________）名词变复数的不规则变化: medium→_____________媒体; criterion→______________标准;datum→___________数据; bact erium→_____________细菌2. 燃料;为身体提供能量的食物; (维持,增加感情的)刺激物;n. ________; 给…加燃料;增强;刺激v._________; Government forces are running out of fuel. His comments are bound to add fuel to the debate. 他的话必将为争论推波助澜. Research suggests warm colors fuel our appetites.3. 量；数量n. ______________; 质量_______________;搭配：大量的_____________________________________；_______________________________________;批量地;大量地________________________________;4.衡量；测量；尺寸n.____________________；n.措施v.衡量；估量_____________;搭配：无法衡量；无法估量___________________________;采取有效的措施做某事__________________________________________;5. 环境保护论者n.___________________ ; 环境n. ________________；环境的adj. ________________；环境的adv. _______________________；搭配：环保的_________________________________________;6. 结果;后果;影响n. ___________________；adj.随之发生的;必然的;合乎逻辑的___________________;adv.所以;因此_____________________；搭配：结果___________________________________；因为____________________________________; 7.生存；存在n._________________; vt. _____________；搭配：开始形成___________________________________________;8. 个人；个体n.________________; adj.单独的；个别的________________; adv. __________________;9.投入；奉献;承诺；许诺；保证承诺的事；责任n.___________________；.犯(错误、罪行等);承诺；(使) 承担义务；(使) 作出保证;投入vt./vi_______________; 投入的;尽责的adj._________________;搭配：(动词)犯错________________________; 犯罪_____________________;自杀____________________;承担义务/承诺/保证做某事___________________________________________；投入时间/金钱做某事_________________________________________;(名词)承担义务/承诺/保证做某事___________________________________________；(形容词)致力于；献身于；投入的；忠于__________________________________;I’m overworked at the moment —I’ve taken on too many commitments.A career as an actor requires one hundred percent commitment.She has made a commitment to going bottle-free.Smoking is committing suicide slowly.The world has already committed to establishing a Climate Adaptation Fund. (气候应对基金)He commits an hour to reading the newspapers every morning.A lot of money has been committed to the project.He loved playing this instrument, and was committed to practicing it.If you have a girlfriend, you should be committed to her only.10.污染；弄脏n. ___________污染物n_____________; 污染v.__________；被污染的adj_______________;11.环境；情况n.______________________;搭配：在这样的情况下___________________________; 在任何情况下__________________________;绝不_______________________________________________(放在句首要倒装)Our circumstances are so desperate that it is uncertain whether life will return to normal.Under/In the circumstances, it seems better not to tell him about the accident.It’s an experimental model, so don’t touch it under/in any circumstances.Under/In no circumstances can you subscribe to his view.12.贡献n._________________; 对…做出贡献v. ________________搭配：做贡献/捐助/投稿/导致；促使__________________________;对…做出贡献________________________________________;13.显示；演出；呈现；演示n. _________________; v. 呈现；展示；赠送____________;adj. 在场的；出席的______________; n.礼物；目前；现在_______________; 二、动词或动词兼名词：1. 消费；消耗；耗尽；吃完vt.___________；n._________________; 消费者n.______________;adj.费时的_____________________;搭配：减少能源消耗_______________________________________;In our daily life, we usually consume a lot of energy.His death resulted from consuming a huge quantity of alcohol.Looking after the children, cooking and cleaning are time-consuming.The law has led to a reduction in fuel consumption in the US.2.vt.签署文件;捐助;vi.同意;捐赠;订阅_______________；n.订阅费;捐款;捐助;会员费________________;搭配：同意；赞成赞成(观点;计划;理论)；订购(报刊;杂志)_________________________;I've personally never subscribed to the view that either sex is superior to the other.My main reason for subscribing to New Scientist is to keep myself informed of advances in science.I subscribe to a few favourite charities regularly.3.照顾；护理;倾向;往往会;趋向;趋于vt.___________;趋势；倾向；走向n._____________; 同义词：n._______________;往往做;易于做；倾向于做_____________________（v.）；____________________________(n.);做…正成为增加的趋势_____________________________________________;She tends to lose her temper easily when people are opposed to her ideas.Hearing the news that his son was sick, he was eager to go back home to tend (to) his son.In our culture, girls are brought up to tend to the needs of the family.These plants have a tendency to grow in the more rural areas.There is a growing tendency for people to advocate walking to work.There is a growing upward trend in gasoline prices.4.反对;反抗;与某人较量vt.______________；反对的;对立的adj._____________；n.(强烈的)反对；抵制___________________;相反的人或事物)n. /相反的；对立的adj. /在…的对面prep._________________;搭配：反对(某人)做某事____________________________(动作); ______________________________(状态);I strongly oppose the rule that students should come to school before 6:50 am.He opposed banning senior three students from taking part in outdoor activities.He is strongly opposed to consuming a huge quantity of energy in our daily life.Strangely, Mr. Green, also opposed to the new policy, made no remark in the discussion.Good habits always lead to high efficiency, while bad ones bring the oppositeAll the cars driving in the opposite direction should have their headlights on.The hotel is located opposite the post office.5. 陈述，声明；说明vt._________; n.________________; 国家; 州; 状况，情况__________;搭配：据说_________________________;处于…的状态_______________________________________;国有企业_____________________________;He stated his opinion about the plan that a state-owned company would be built in the city.He stated that he can’t put up with his bad temper.It is stated that a huge quantity of carbon dioxide is released into the air, resulting in severe pollution.It was stated that he was in a rigid state when hearing the news.6.看一下；扫视vi. _____________；一瞥n._____________；搭配：瞥一眼_________________; 盯着看；凝视__________________；怒视_________________；7.拥护；提倡；主张vt.____________；n.提倡者; （辩护）律师; 支持者_______________;搭配：主张(做)某事_____________________________；主张；提倡做____________________________________________;Many experts advocate rewarding your child for good behaviour.It is advocated that we (should) encourage more and more people to wear traditional clothes.The Chinese government advocates that a low-carbon lifestyle be adopted to protect our environment.8.同一范围内类似的一系列事物；年龄，价格等变动的范围；幅度；距离;界限；山脉n．_______________; (在一定范围内)变动；变化；排列v. _____________;名词搭配：一系列;大范围的____________________________；在射程以内；在范围内_______________________________;在射程外;在范围外_______________________; 近距离地_______________________________;动词的搭配：在…范围内变动；包括; 由…到…之间的各类事物________________________________; College students are of many different ages and come from a wide range of social, cultural and economic backgrounds.In addition to these traditional activities, we have a wider range of choices such as travelling and visiting friends. The price of the house is so high that it is well out of /beyond our range.The price of the car ranges from 20,000 dollars to 30,000 dollars, which is in/within his range.He is the manager, hiring and firing are within the range of his responsibilities.Do not miss this opportunity to see whales at close range on their annual migration south to the Antarctic. Between Italy and France, there is a mountain range called the Alps.He has a number of interests, ranging from playing chess to swimming.The listeners are mostly middle school students, ranging between 12 and 18.9. vt.使恢复;使振作____________; adj. 使人振作的____________; adj. 振作的；精神的___________;搭配: 使记忆犹新____________________________________;使某人自己振作/恢复精神_____________________________________________;三. 形容词&副词1. 能再生的；可更新的adj.__________________; v.更新；续借____________;2. 胡乱的；任意的adj.________________; 胡乱地；任意地______________;搭配：胡乱地；任意地________________________;3. 平稳的；持续的；稳固的adj.______________；adv._________________;4. 经济的；节约的adj._________________；经济上的_____________；adv. _________________;5. 平均；平均数;一般水平；平均标准n.________________;平均的;中等的；适中的(normal or typical)平常的;普遍的(not special/ordinary);adj._______________；名词的搭配：平均是..._________________________平均地；一般地_____________________;在平均水平以上________________________; 在平均水平以下______________________;形容词：智力一般的孩子_______________________________________;中等身高_____________________________The average of 3, 8 and 10 is 7. I spend an average of about $200 a year on books. On average we have five classes a day.He was a good student and scored above (the) average in most subjects.Scientists believe the world’s average temperature has risen by about 0.8℃since 1900.Only one in six children whose parents were of average weight became overweight.Freddy was an average student, but not an average person.6.电的；与电有关的adj.________________；电子的adj. _______________；电动的; 带电的; 发电的，导电的_______________;搭配：电器_________________________；电子钢琴_____________________；电动车__________________________；7.随便的,非正式；漫不经心的；偶然的;碰巧;adj. _____________; adv.随意地；漫不经心地______________; 对...很随意____________________________；便装_______________________；非正式的友好问候___________________________________短语:1.发生；造成________________；2.怎么发生的呢/怎么会呢？_______________________________________;3. 上升；增长；升起______________;4. 导致________________________________________________;5. 即使__________________________;6. 继续__________________;7. 大体上；基本上_________________________; 8.代表…一方；作为…的代言人_____________________;9. 忍受；容忍____________________________; 10. 只要_______________; 11.等等_________________;12.人们普遍关注_________________________________________;巩固练习：1.There is a __________ _____________(普遍现象) that________ __________ ____ ___________ ______ ___ ______ _______ ____ ________ ____________ _____ ___________(很多消费者往往随意购买大量商品) because sellers offer___ ______ ________ ___(大范围的)sales promotion.___________ _________(与...比起来)travelling by train, travelling by air is less ____________ (耗时的) but to a certain extent it is riskier.2.To fight global warming, we should try every means____ _________ _________ ______________(降低能耗). The_________________ _____________ (环境保护论者主张)that_____________ ________ _______ ________________ ____ ____________ ___________(个人要为环保作出贡献) by not____________ _______ ____ (用化石燃料) and buy _______________ ____________ (环保的)products.3.To expand vocabulary, not only______ ____ ________ __________ ____students __________(花费) a great deal of time in memorizing the words, but they also __________ ____(订阅) the English version of China Daily. (quantity)4.____ _________ ____________ ____(大量的)teachers ___________ ____(同意)the opinion that it is ________ _____________ __ (因为)lack of time that students________ ____ ____________ their homework _________________(往往随意完成作业), _____ ____ ____________, they failed in the exams.With the___________________ from the kind-hearted people, the teacher_______________ ____ some magazines and newspapers for the poor children in the mountain area. (subscribe).。

Unit 4 Global warmingⅠ.情景默写1．These policies have been widely advocated (拥护)．2．Several cars are available within this price range (范围)．3．He spends on the average (平均)two hours a day on reading.4．Under no circumstances (情况)may the child be identified.5．There was something a little too casual (随意)in his tone.6．There are only a small quantity (数量)of flowers left in the garden.7．I had a quick glance (一瞥)at the article，but I haven’t read it yet.8．These policies could lead the country to an environmental catastrophe (大灾难)．9．One of businesses of the sociologists is to study the social phenomenon (现象)．10．On presentation (显示)of the relevant identity documents you may collect your property.11．There is a widespread (普遍的)dissatisfaction among the students with the food on campus.12．I think I’ll just refresh (使恢复)myself with a cup of tea before I go to meet the children.13．The prime minister made a firm commitment (承诺)to increasing spending on health.14．With the house prices going_up (增长)，m ore and more people can’t afford an apartment.15．We are still wondering how it came_about (发生)that the experiment ended infailure.16．What I can’t put_up_with (容忍)is that he never cares about others’ feelings. 17．The traffic accident resulted from the driver’s carelessness，resulting_in (导致)the death of 3 people.18．It is the teacher as well as the students who subscribes_to (赞成)the idea that we should do something for the poor old man.19．He was wet through with sweat，but he kept_on (继续)working.20．On_behalf_of (代表)everyone here，I wish you a pleasant journey back to your country.Ⅱ.词性转换1．Relax as much as possible and keep breathing steadily (steady)．2．Waste water from the factory is the main cause of the pollution (pollute)．3．In consequence (consequent)of your bad work I am forced to dismiss you. 4．At first he was opposed (oppose)to the plan，but we managed to argue him into accepting it.5．It was stated that the president made a statement announcing new policies to deal with the new situation.(state)6．Many people do not believe the existence of the ghosts.Some young children doubt whether there exist all kinds of ghosts in the world.(exist)7．The storm tends to hit our city，and we will observe the tendency of it closely.(tend)8．The air conditioners of this type consume too much electricity.Many consumers complain about this.(consume)9．With the decline of the global economy，her family is faced with many economic problems，one of which is whether to buy an economical stove to survive the whole winter.(economy)10．They have contributed a lot of food and clothing to the refugees so far and their contributions will certainly help the refugees live through the winter.(contribute)1．句型公式：so/as long as意为“只要”，引导条件状语从句只要我们不失去信心，继续努力，我们一定能克服困难，实现目标。

Unit 4 Global warmingⅠ.阅读理解El Niño，a Spanish term for “the Christ child，” was named by South American fishermen who noticed that the global weather pattern，which happens every two to seven years，reduced the amount of fishes caught around Christmas.El Niño sees warm water，collected over several years in the western Pacific，flow back eastwards when winds that normally blow westwards weaken，or sometimes the other way round.The weather effects，both good and bad，are felt in many places.Rich countries gain more from powerful Niños，on balance，than they lose.A study found that a strong Niño in 1997－98 helped America’s economy grow by 15 billion，partly because of better agricultural harvests：farmers in the Midwest gained from extra rain.The total rise in agricultural incomes in rich countries is greater than the fall in poor ones.But in Indonesia extremely dry forests are in flames.A multi－year drought(干旱) in south－east Brazil is becoming worse.Though heavy rains brought about by El Niño may relieve the drought in California，they are likely to cause surface flooding and other disasters.The most recent powerful Niño，in 1997－98，killed around 21，000 people and caused damage worth $36 billion around the globe.But such Niños come with months of warning，and so much is known about how they happen that governments can prepare.According to the Overseas Development Institute(ODI)，however，just 12% of disaster－relief funding in the past two decades has gone on reducing risks in advance，rather than recovery and rebuilding afterwards.This is despite evidence that a dollar spent on risk－reduction saves at least two on reconstruction.Simple improvements to infrastructure(基础设施) can reduce the spread of disease.Better sewers(下水道) make it less likely that heavy rain is followed by an outbreak of the disease of bad stomach.Stronger bridges mean villages are less likelyto be left without food and medicine after floods.According to a paper in 2011 by Mr Hsiang and co－authors，civil conflict is related to El Niño’s harmful effects—and the poorer the country，the stronger the link.Though the relationship may not be causal，helping divided communities to prepare for disasters would at least reduce the risk that those disasters are followed by killing and wounding people.Since the poorest are least likely to make up for their losses from disasters linked to El Niño，reducing their losses needs to be the priority.【语篇导读】本文是一篇说明文。

Book 6Unit4 Global warming阅读导学案【课标解读】通过阅读不仅训练他们的阅读技能，还要让学生学到一些有关全球变暖问题的单词和短语【教学目标】1. 透彻理解课文；培养快速阅读、整体理解的能力。

2.自主学习，合作探究；能够流利的复述课文。

3. 了解环境保护和全球变暖问题，以积极的热情投入到学习，享受英语阅读的乐趣。

【重难点分析】1.课文理解。

2. “it”的用法【教学过程】【巧设导语激发兴趣】Task 1 Vocabulary（词汇预习）Preview the new words of this text.【设计意图】通过预习词汇为下一步的阅读扫清生词障碍。

Task 2 Warming up（热身）Please look at the pictures on P25 and answer:1. What do we use energy for?2. Where does all this energy come from?3. Which energy sources are renewable and which are non-renewable?【设计意图】通过图片激发学生兴趣，引出本单元的话题：许多动物都处于危险之中，唤起学生的忧患意识，为后面的阅读做铺垫，帮助学生顺利完成报告阅读。

Task 3 Do the Ex. in Fast readingTask 4 Read the text and try to find out the difficult and charming sentences and then try to analyze or memorize them.【设计意图】通过让学生课前自己找出难句、典句并试着分析和欣赏，培养学生主动发现问题问题和解决问题的能力，同时为课上的研读环节作了充分的铺垫。

In class（课上交流展示、研讨提升）Step 1 Check-up and lead in（展示预习成果和导入新课）1. Get two members of different groups to come to the Bb and check up their prevision tasks, one group to do the following task:Find the words or expressions for each of the following meanings from the text.A.________ to use upB.________ to expressC.________ to take a quick lookD.________ to take care ofE.________ for eachF.________ sudden great disasterG.________ to supportH.________ not agreeI. ________ gentleThe other group is to report their prevision of the warming-up part.【设计意图】该环节的设计意图是检查学生对前两个课前预习任务的完成情况。

Unit 4 Global warmingKnowledge and skills1．To know the meanings of the following new words and phrases：2．To learn about some facts and views about global warming.3．To learn how the information is organized.4．To develop the students' reading ability by skimming and scanning the passage.5．To develop the students' speaking ability by talking about global warming.Process and methods1．While doing Warming Up the teacher can lead in the topic of this unit by showing students some pictures or videos about sources of energy，making the students recall their own knowledge about energy.2．During Pre－reading the teacher can go around the classroom and discuss the questions with several students.This discussion should be student－centered and lead them to the topic of global warming.The teacher should also ask the students to look at the graphs in the reading passage and try to find out the general idea of the text.3．While doing Reading and Comprehending，the teacher may first ask the students to read the text quickly to get the general idea of each paragraph.After reading the passage，students are encouraged to answer some questions and discuss the text structure.4．To consolidate the contents of the reading passage，the students should be required to retell the text in their own words at the end of the class.Emotion，attitude and value1．To make students realize the harm of global warming and the importance of environmental protection.2．To develop students' sense of cooperative learning.教学重、难点1．To enable the students to learn about global warming and to develop their reading ability.2．To enable the students to talk about what we should do to prevent global warming.教学过程Step 1 Lead-in1．Show some pictures to students and ask them what is to blame for these frequent disasters in 2011 .Step 2Reading and comprehending1．Fast readingAsk students to read the passage aloud to the tape so as to get the key words and general idea of each paragraph and answer the following questions：(1)What is the main topic of the article?________________________________________________________________________(2)Who wrote the magazine article？What is the name of the magazine?________________________________________________________________________(3)What are the names of the three scientists mentioned in the article？Do they agree with one another?________________________________________________________________________(4)What is global warming?Suggested answers：(1)Global warming/the warming of the earth.(2)Sophie Armstrong，Earth Care.(3)Dr Janice Foster，Charles Keeling，George Hambley.They don't agree with each other.(4)The earth is becoming warmer.2．Detailed reading(1)Read the passage carefully and judge whether the statements are true(T) or false(F)．①The temperature last century didn’t increase much.②Everyone believes that global warming is caused by the activities of humans.③Janice Foster believes that she can measure the future global rise in temperature.④The rise in carbon dioxide is causing a steady increase in global warming.⑤George Hambley believes scientists are just guessing about the effects of global warming.⑥It is clear what the effects of global warming will be.(Suggested answers：TTFTTF)3．Structure analyzingAsk students to read the text carefully and try to find out how many parts they can divide the4.Careful readingAsk students to read the text carefully and answer the questions:(1)What are the names of the three scientists mentioned in the article?(2)What do they think about global warming? Do they agree with one another?(3)What are the two graphs about?Step 3DiscussionAsk students to talk about global warming in their own words. Then let them try to answer the question what can we do to control the greenhouse effect.。

Unit 4 Global warming1. 教材分析本单元以Global warming 为主线，旨在通过单元教学使学生经过思考、学习，认识到全球变暖的起因和它所带来的种种后果。

同时鼓励学生进一步阐述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、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，并能运用所学知识写一篇有关环境问题的论文。

1.1 Warming Up通过直观的图片，使学生对能源的用途和种类有一个基本的了解。

让学生对当今人们开发和使用能源以及随之而来的种种影响有更深一步的思考和认识，从而为本单元主题Global warming 作了很好的铺垫。

1.2 Pre-reading是Reading的热身活动。

通过组织学生对这些问题的讨论、回答，激活他们头脑中相关的内容模式，为下一步阅读做好准备。

由于Global warming 是当今世界的一个热门话题，学生已从多种渠道对此有了很多的了解，因此教师可以在安排预习作业时让学生分组做 a project on global warming , 这样既符合了新课程的要求——体现学生的主体地位，激发学生自主学习的热情，又能得到很好的教学效果。

1.3 Reading是一篇从杂志节选的文章。

它讲述了全球加速变暖的原因——人为温室效应，后果以及人们对此的不同观点。

要求学生在理解文章大意的同时注意它的写作技巧：提出问题——分析现象——阐述各方面的不同观点——以疑问句作为总结引发读者深思，自行做出判断。

这为Comprehending 中Exercise 3的分组辩论活动留出了很大的空间，埋下了很好的伏笔。

1.4 Comprehending 包含了三大部分。

前两个部分中设计了诸多细节性的问题，旨在检测学生定位、理解细节及对文章大意的总结归纳的能力。

最后一项要求学生在读完整篇文章后，仔细思考并树立自己的观点：“We should do nothing about global warming”还是“We should do something to decrease the speed of global warming”，并利用所学知识进行分组辩论。

Unit 4Global warming1．____________ n .结果；后果；影响→____________ adj .作为结果的；随之发生的 2．____________ n .种类；范围→____________ v .变化；排列 3．____________ v i .看一下；扫视→____________ n .一瞥4．____________ v t .反对；抵制；与(某人)较量→____________ adj .反对的；对立的 5．____________ adj .平稳的；持续的；稳固的→____________ ad v .平稳地；持续地6．____________ adj .平均的→____________ n .平均；平均数→____________ v .求……的平均数 7．____________ n .生存；存在→____________ v i .生存；存在；有 8．____________ n .污染；弄脏→____________ v t .污染；弄脏9．____________n .分歧；不全都→____________n ．协定；协议；契约；全都→____________ v i .达成协议；同意1．I was unaware of his ____________(存在) until today.2．The group does not ____________(提倡) the use of violence.3．There are large ____________(数量) of rain in the area of the country every spring. 4．There will be an increase in the ____________(范围) of 0 to 3 percent. 5．We are making slow but ____________(稳步的) progress. 6．The ______ (平均数)of 4,5 and 9 is 6.7．He tried to sound ______(漫不经心)，but in fact he was worried.8．The proposed new airport will be strongly ______ (反对)by the local residents.9．The manager ____________(易于) to become angry when others disagree with him. 10． Tom ____________(扫视) at the envelope and recognized his uncle's handwriting.1．even ____________即使2．come ____________ 发生；造成 3．quantities ____________ 大量的 4．result ____________导致5．build ____________逐步建立；增加；增进 6．keep ____________ 连续7．____________ the whole 大体上；基本上8．____________ behalf of 代表……一方；作为……的代言人 9．put up ____________ 忍受；容忍 10．so ____________ as 只要 11．and so ____________ 等等12．be opposed ____________ 反对…… 13．go ____________ 上升；增长；升起14．subscribe ____________ 同意；赞成；订购1．____________ is no doubt that the earth is becoming warmer ... 毫无疑问，地球正在变暖……句型提炼：There is no doubt that...句型。

Unit 4 Global WarmingReadingLearning goalsTarget languageWords 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 onAbility goalsEnable 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.Learning important & difficult pointsEnable the students to get a better understanding of articles of this kind.Learning aidsA projector and a blackboard一、Warming up1. What is the greenhouse made and used for?A greenhouse is made of glass and is used for growing plants, especially during cold weather.2. What’s greenhouse effect?二、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 con s equences.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 between1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere fro m 1957 to 1977.5. What is the main topic of the article?Global warming/ the warming of the earth.三、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, 10四、Part 1（1）introduce a debate over the issue of global warmingPart 2 (2-4) illustrate how global warming comes aboutPart3(5-10) list two different attitudes among scientists towards global warming Part4(11-12) It’s up to readers to think and decide whether people should dosomething about global warming or not.五、DebateGroup 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.六、Homework1. 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。

Unit 4Global warming[单词拼写应用]核心单词1．tend v i.趋向；易于；照顾v t.照顾；护理2．quantity n．量；数量3．glance v i.看一下；扫视n．一瞥4．advocate v t.拥护；提倡；主张5．mild adj.温和的；温柔的；淡的6．range n．种类；范围7．circumstance n．环境；情况8．refresh v t.使恢复；使振作9．average adj.平均的10．phenomenon n．现象[语境运用]用所给词的适当形式填空。

1．She strongly advocates/advocated (advocate) that we should make joint efforts to contribute to the youth football progress.2．The water recreation centre provides a variety of activities，ranging(range) from swimming to diving. 3．Quantities(quantity) of money have been spent in bringing up the children since they were married. 4．The Qinghai-Tibet Plateau is the world's highest plateau，averaging (average) over 4,000 metres above sea level.5．Pleasant music is often played between classes to make students refreshed(refresh) and relaxed for a while. 6．An eclipse of the moon is one of the natural phenomena(phenomenon)．拓展单词1．pollute v t.污染→pollution n．污染；弄脏2．oppose v t.反对；反抗；与(某人)较量→opposed adj.反对的；对立的3．consequence n．结果；后果；影响→consequently ad v.因此；所以4．state v t.陈述；说明→statement n．声明；陈述；表达5．steady adj.平稳的；持续的；稳固的→steadily ad v.平稳地；持续地6．exist v i.存在→existence n．生存；存在7．contribute v．贡献；撰稿→contribution n．贡献8．consume v t.消费；消耗；耗尽；吃完→consumer n．顾客9．grow v．增长；生长→growth n．增长；生长10．educate v．教育→education n．教育→educator n．教育工作者；教育家11．agree v i.同意→agreement n．同意→disagree v i.不同意；意见不合→disagreement n．分歧；不一致[语境运用]用所给词的适当形式填空。

Unit 4 Global warming教学案1教材分析Ⅰ.教学内容分析本单元的中心话题是人类当今面对的环境问题，主要探讨了“全球变暖”和“节约能源”等方面的问题。

由于人类过多使用不可再生能源，大气中二氧化碳的含量逐年增加，导致全球气温上升。

通过学习本单元，让学生了解能源分为“不可再生能源”和“可再生能源”，帮助学生树立“节约能源、保护环境”的主人翁意识。

语言知识和语言技能主要围绕“全球变暖”和“节约能源”这一主题设计的。

“热身”(Warming up) 部分要求学生列举家中、学校或其他地方使用能源的物体，指出这些能源的来源，并尽可能多地列举不同的能源。

能源可分为两类：一类是可再利用能源；另一类是一次性能源。

把前面列举的能源按能否再利用这一标准进行分类。

本部分提供了六幅图片，教师可以从识图开始组织教学。

还可以让学生搜集一些其他相关图片。

这六幅图分别为：风力（wind power）、燃煤发电站（a coal power station）、炼油厂（an oil refinery）、原子能发电站（a nuclear power plant）、太阳能接受器（solar panels）、水坝（a hydro dam）。

“读前”(Pre-reading) 部分首先介绍什么是温室、它有什么作用，然后要求学生讨论大气中温室气体的作用。

温室是由玻璃构成的建筑，主要用于花果蔬菜的培植。

温室是由玻璃构成的建筑，主要用于花果蔬菜的培植。

温室能阻止热量散发，因而能帮助植物度过寒冷的时期。

该部分的讨论有利于学生预测课文内容和理解阅读课文中的温室气体效应。

“阅读”(Reading) 部分是一篇杂志文章，主要讲述了地球温度上升的现象和原因。

20世纪中，地球的温度上升了华氏1度。

这看上去是一个很小的数字，但相对于自然界的其他现象来说，这个增长速度是迅猛的。

这种现象是自然发生的还是人为的？这个问题引起激烈的争论。

许多科学家认为，这种变化是人类燃烧矿物燃料所致。

Unit 4 Global Warming Using Language【学习目标】通过本课学习，了解温室效应目前的情况，帮助学生了解环境保护的重要性，建立环境保护的意识。

【学习重难点】1.掌握casual, circumstance, refresh等单词的用法。

2.掌握on behalf of , make a difference, put up with, as long as等词组的用法。

【自主学习】课前预习积累整合1.________ vt. 拥护，提倡____________ n.拥护者，倡导者_________ n.拥护，支持2.__________n.承诺，信奉____________vt. 犯，做，承诺__________adj.承诺的3._____________n.污染___________vt. 污染___________n.污染物4.____________n.增长，生长___________v. 生长，增长，变得_________adj.增强的，成长的___________n.栽培者___________adj.长成的，大人的___________n. 大人，成人5.__________ adj, 电的__________ adv. 用电地_________n.电工____________n.电，电力___________ adj,电动的，有电的6.__________ adj.随便的，偶然的__________adv. 随便地，偶然地___________ n.受害者，意外事件7.____________ vt. 使振作，使恢复__________adj.使人精神振作的_________adv. 使人精神振作地__________ n. 恢复精神__________ n.使精神振作的东西8.________n.教育家_________vt. 教育，培养_________n. 教育________adj. 教育的__________n.教育学者9.__________n.贡献____________v.捐助，有助于___________n. 捐款人，投稿人10._____________n. 分歧，不一致____________v.不同意，不一致___________adj. 令人不愉快的___________ adv. 不愉快地课文链接Fast readingSkim the letters and find who the writers are and what their purposes of writing the letters are._______________________________________________________________________________ ____________________________________________________________________________Careful readingWhat can we do about global warming ?◆Turn a(n) ____________________________ off when you’re not using it.◆Put on more clothes instead of turning up the ________.◆Walk or ______________ instead of taking motor vehicles.◆__________ cans, bottles, plastics and newspapers.◆Buy things made from _________________________________.◆Buy products that are made to save ____________.◆__________________ in your garden or your school yard.◆Talk with your family and friends about ________________________________.重点单词和短语1.casual adj. .1）偶然的，碰巧的；2）随便的，非正式的；3）临时的4) 随便的，漫不经心的casually adv. 偶然地，临时的词义辨析1)We are the casual acquaintances of a long railway journey. ___________2)I always change into casual clothes as soon as I get home from work._________3)John was dismissed last week because of his casual attitude towards his job. _________4)She had a number of casual jobs during the university holidays. _________2.circumstance 环境；情况（常用复数）1)We need to know ______ _________ __________surrounding the accident. 我们需要查明白这起事故的确凿证据。

高中英语一轮复习 1 Unit 4 Globalwarming I. 单元基础知识 1. 核心单词 (1) _________ n．趋势；倾向；走向 (2) _________ n．种类；范围 (3) _________ adj．平均的 (4) _________ vi．看一下；扫视；浏览n．一瞥 (5) _________ adj．随便的；漫不经心的；偶然的 (6) _________ n．现象(pl.__________) (7) _________ adj．分布广的；普遍的 (8) circumstance n． (9) quantity n． (10) refreshvt． (11) statement n． (12) existence n． (13) environmentaladj． (14) subscribe vi． (15) measurement n． 2. 高频短语 (1) result in __________ (2) on behalf of ________

(3) come about _________ (4) so long as _________ (5) go up __________ (6) ___________ 大体上；基本上 (7) ___________ 反对…… (8) ___________ 即使 (9) ___________ 继续 (10) __________ 忍受；容忍 3. 重点句型 高中英语一轮复习 2 (1) ____________ the earth is becoming warmer (see Graph 1) and that it is human activity that has caused this global warming rather than a random but natural phenomenon.毫无疑问，地球正变得更加暖和(见图表1)，而且全球转暖是人为的，而不是随意的自然现象。 (2) ________ we start reducing the amount of carbon dioxide and other greenhouse gases，the climate is going to keep on warming for decades or centuries. 即使我们开始减少二氧化碳和其他温室气体的含量，在(未来)几十年或几个世纪内，气候仍会持续转暖。

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Unit 4 Global WarmingTeaching Goals:1.To discuss and read about global warming.2.To learn to write a poster.Teaching Procedures:Step 1. Warming upTurn to page 30. Listen to the tape and follow in a low voice. Pause where the reader pauses. Pay attention to the pronunciation and intonation.Step 2. Reading1. Individual workWhen you read the text for the second time you are supposed to underline all the useful collocations .You have to copy them into your notebook. I hope you can fully understand the importance of expressions in English learning.2. Group workDiscuss in groups the collocations from the text.Do a project on…; do…about…have effect on…; start with…get suggestions; have to power to;make a difference; put up with…come from…reduce the carbon dioxide content; be startedwith…; use energy in…leave…on; turn…off; turn up the heat; ride a bike; make…from…; bemade from recycled materials; save energy; plant trees in the garden; absorb carbon dioxidefrom…; talk with…about…Step 3. WritingYou are going to make a poster to tell your schoolmates ways to reduce the amount of carbon dioxide in the air.For your reference:How To Reduce the Amount of Carbon Dioxide Going into the Air.Use public transportation, walk or bike to school or work. If you must drive, join a carpooland use a car that gets high mileage.● Use energy-efficient appliances and weatherize your home.●Use renewable energy sources, like solar heart or wind power ,which don’t emit carbondioxide.● Switch from coal and oil to natural gas in power plants and factories .Naturalgas releases theleast amount of carbon dioxide.Step 4. Listening and discussingNow turn to page 31. Li Ben is doing an interview with Professor Chen about the use of different sources. Read the statements and listen to the tape recording of the interview to decide which statement the professor does not agree with.We’ll have to stop using fossil fuels.About 90% of the world’s energy comes from fossil fuels.We can replace fossil fuels with renewable sources of energy.Nuclear power is a good source of energy.In the future, we’ll need new technologies to replace fossil fuels.It’s the developed countries who are to blame for producing most of the carbon dioxide.Step 5. Closing downDiscuss what we individuals can do about global warming in groups of four.Step 6. HomeworkMake a poster for your school that tells Ss various ways they can reduce the amount of carbon dioxide in the air.。

此刻分词和过去分词的用法此刻分词和过去分词要紧不同在于：此刻分词表示“主动和进行”，过去分词表示“被动和完成”(不及物动词的过去分词不表示被动，只表示完成)。

分词能够有自己的状语、宾语或逻辑主语等。

1)分词作状语分词在句子中作状语，能够表示时刻、条件、缘故、结果、妥协、伴随等。

分词做状语时，它的逻辑主语与句子的主语一致。

作状语的分词相当于一个状语从句。

【例如】Hearing the news, they all jumped with joy. Using what you know of word stems and word formations, you can make a guess at the meaning of a new word.The students went out of the classroom, laughing and talking. Accompanied by his friend, he went to the railway station. Given better attention, the plants could grow better.He looked tired and depressed, visibly disturbed by the news of his mothers illness.分词在句子中作状语，利用何种分词，要取决于分词与句子主语的关系：主谓关系用此刻分词，动宾或被动关系用过去分词。

【例如】Not having enough hands, we turned to them for help.(we don’t have enough hands).____the earth to be flat, many feared that Columbus would fall off the edge.A)Havings believed B) Believing C) Believed D) Being believed本句意思为：相信地球是平的，许多人担忧哥伦布会从边上掉下去。