湖北省宜昌市高中英语Unit4GlobalwarmingPartIVUsingLanguage学案无答案新人教版选修6
Unit4Globalwarming(第四课时)教案(新人教选修六).doc
The Fourth Period Language StudyTeaching goals 教学目标L Target language 目标语言a.重点词汇和短语glance, widespread, decrease, steady, average, existence, outer, on the wholeb.重点句式It is human activity that has caused this global warming. P29...it is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide. P262.Ability goals 能力目标Learn about "it" used for emphasis.3.Learning ability goals 学能目标Help the students learn how to use new words and expressions of this unit and how to use “iL for emphasis.Teaching important points 教学重点The structure of Tt is …that …二Teaching difficult points 教学难点Teach the students how to master the use of “it" for emphasis.Teaching methods 教学方法Explanation and practice.Teaching aids教具准备A computer.Teaching procedures & ways 教学过程与方式Step I RevisionT: Good morning, everyone.Ss: Good morning, sir / madam.T: First PH check your homework. Have you finished the poster?Ss: Yes.T: Well, which group would like to show us yours?Get several groups to show their posters.A sample poster:What Can We Do about Carbon Dioxide?Carbon dioxide is one of the main causes of global warming which will bring the earth catastrophe. Here are a few ways that individuals can follow to reduce its content in the air.•Turn the electrical appliances off if you are not using them.•Put on more clothes if you are cold instead of turning up the heat.•Walk or ride a bike instead of using motor vehicles if you can.•Recycle cans, bottles, plastics and newspapers, buy things made recycled materials.•Buy products that are made to save energy such as & idges and micro waves. •Plant trees in your garden or school yard.Together, individuals make a difference. It，s time for us to do something about carbon dioxide. Talk with your friends or family about global warming. Let's work together and care the planet we are living in.Step II Discovering words and expressionsT: Now please open your books and turn to page 2& Lett do some exercises.Step IH Discovering useful structuresT: Next let^s turn back to page 29. We511 learn a useful structure. Now compare these two sentences below.Show the following two sentences on the screen.Human activity has caused this global warming.It is human activity that has caused this global warming.T: Who can translate them into Chinese?Sa: I think they are the same. They both mean “ 人类行为引发了全球变暖”・Sb: I don't think so. They are a little bit different. The latter one should be “ 引发全球变暧的止是人类行为”.In the second sentence, "human activity" is emphasized. T: Quite right. This is the structure we are going to learn today.Present the structure on the screen and give some explanation.由it引导的强调句结构：It is (was) +被强调部分+ that (who) +句子其他部分注意：此结构强调的成分仅限于主语，宾语和状语。
人教版高中英语选修六Unit+4+Global+warming+(4)+教案.doc
Unit 4 Global warming教学目标1) Learn some knowledge about the greenhouse effect and global warming.2) Know the contents of the text well by talking about this topic and reading.3) Discuss the problem of global warming and express your own opinions学情分析There are two meanings of the term "greenhouse effect". There is a "natural" greenhouse effect that keeps the Earth's climate warm and habitable(suitable for people to live in). Without it, scientists estimate that the average temperature on Earth would be colder by about 30 degrees Celsius (54 degrees Fahrenheit), far too cold to sustain(维持) our current ecosystem. In other words，the normal greenhouse effect is a natural process which is to some degree beneficial to us.重点难点Master the main idea of the first five paragraphs by talking about the topic.教学过程活动1 【讲授】Unit 4Teaching procedures:Step I. GreetingsGreet the whole class as usual.Step II. Lead-inLead to the topic by showing an article to the students and let students know about two types of greenhouse effect ("natural" greenhouse effect and “man-made” greenhouse effect) and their exact meanings.Step III. Analyze two graphs to learn the main idea of the first five paragraphs.From the first graph, we can see that during the 20th century the temperature of the earth rose about one degree Fahrenheit. All scientists agree with 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 produce energy.More such burning means more carbon dioxide added to the atmosphere.We can see clearly that the levels of carbon dioxide have increased greatly over the past decades.Higher levels of carbon dioxide means sharper increase of the temperature. The phenomenon is called global warming.There has been a debate towards global warming over the pastyears. Opinions about it vary from person to person.Step IV. Read the whole passage to review the main idea of the first five paragraphs and know the two different opinions. Dr. FosterCarbon dioxide has caused the global temperature to ________. An increase of five degrees would be a ____________ and could be very ________.Possible results: __________________(海平面上升)___________________(洪灾)___________________(恶劣的风暴)___________________(干旱)__________________(饥荒)__________________(疾病的传播)___________________________(物种的消失)George Hambley:Any warming will be ______ with few bad ______________________. More carbon dioxide is a _________ thing, which makes crops __________ more and will encourage _____________________.Step V. Discuss the statement: We should take immediate action about global warming.Requirement: Write down your reasons and possible measures on your learning sheetStep VI. Presentation.Ask some students to read their reasons and possible reasons loudly to the whole class.Step VII. Assignment.Make up a complete composition in groups. The passage should include your point of view, your reasons and your measures.精美句子1、善思则能“从无字句处读书”。
英语：Unit4 Global warming Period 4优秀教案(新人教版选修6)
英语：Unit4 Global warming Period 4•优秀教案（新人教版选修6）Period 4Listening and Speaking整体设计教学内容分析The emphasis of this period will be placed on listening and speaking.There are altogether two texts for the students to listen to in this period：one is in the Student's Book and the other is in the Workbook.The first one(on Page 31，Listening and speaking)is a conversation between two people，Li Bin and Professor Keeling，who is a scientist studying global warming.Professor Keeling has been mentioned in the reading passage on Page 26.The listening text is a radio interview about the use of fossil fuels and other sources of energy.It contains examples of the focus function for this unit：agreement and disagreement.While listening to Part 1 for the first time the students are asked to decide which statement in Exercise 1 Professor Keeling does NOT agree with.Then students are required to listen to Part 1 again and tick the energy sources that are mentioned in the text.After listening to Part 2 students are asked to list three things they can do to save energy.At last they should also listen to Part 2 again and fill in the blanks in Exercise 4.The second one(on Page 65，Listening Task)involves an environmental organization.A student，Tom，is giving an oral presentation.As with most oral presentations that students give，Tom has some visual aids to go with his talk.Students will first be required to listen to the whole speech to get the general idea，and then listen again and take some notes about some facts mentioned in the speech.三维目标设计Knowledge and skills1．To understand the meanings of the following key words and expressions while hearing them in the tape：fossil fuels(化石燃料)，industrial societies(工业化社会)，concentrated(浓缩的)，radiation(辐射)，economical(经济的)，global community(地球村)，cigarette butts(烟蒂)，commitment(承诺)，inspiration(启发)．2．To enable the students to understand the listening texts.3．To help the students learn how to express agreement and disagreement.Process and methods1．Smoothing away language problems if any before listening.Before asking the students to listen to the tape，help them to smooth away any language problems such as new words and expressions that they may not understand while listening.2．Listening for needed information.Before asking the students to listen to the tape for the first time，give them one or two questions about the general idea of the text so as to lead the students to concentrate only on the needed information.Then ask them to listen to the tape for a second or even a third time for some specific information by giving them some detailed questions to answer.3．Speaking freely and making conversations.At last the students may be asked to give their own points of view and attitudes towards the subject mentioned in the text.Emotion，attitude and value1．To stimulate students' spirit of communication and cooperation.2．To develop students' ability of enjoying language beauty.教学重、难点1．The understanding of the listening text.2．The expressing of agreement and disagreement.教学过程Step 1Revision1．Retell the text on P26－P27.2．Check the last period's homework and explain the difficulties.Step 2Pre－listening1．Show the following pictures to the students and ask them to tell which kind of energy each picture shows.Picture 1 ____________Picture 2 ____________Picture 3 ____________ Picture 4 ____________Suggested answers：Picture 1：tide；Picture 2：wind power；Picture 3：solar energy；Picture 4：nuclear energy 2．Tell the students to think over and tell which energy is the most widely used now and what are its advantages and disadvantages.________________________________________________________________________ Suggested answers：Solar energy is the most widely used now.Its advantages are environmentally friendly and renewable.Its disadvantage is that the equipment is too expensive.Step 3Listening1．Listen to Part 1 of Text 1(Page 31)and finish the following exercises.(1)How long does Professor Keeling think fossil fuels will last?A．Several years.B．Only a few years.C．Centuries.(2)What is the disadvantage of nuclear energy?A．It is dangerous.B．It produces carbon dioxide.C．There isn't enough for it.(3)What makes it impossible for us to use sun power at present?A．The danger. B．The technology.C．Being clean.Suggested answers：(1)C(2)A(3)B2．Listen to Part 1 of Text 1 again(Page 31)and tick the energy sources that are plete the notes on them.Sources of energy NotesFossil fuelsWind powerEnergy from the sunNuclear powerSuggested answers：Sources of energy Notes3.Listen to Part 2 of Text 1(Page 31)and choose the best answers to the following questions.(1)How many suggestions does Professor Keeling offer?A．2 B．3 C．4(2)Which of the following is to blame for global warming?A．Developing countries. B．Developed countries. C．Poor countries.Suggested answers：(1)B(2)B4．Listen to Text 2(Page 65)for the first time and catch its main idea and then summarize each part.Main idea：_________________________________________________Part 1：______________________________________________________Part 2：_____________________________________________________Suggested answers：Main idea：The talk is mainly about Clean Up Australia Day and its organizer Ian Kierman.Part 1：How Ian Kierman began Clean Up Australia Day.Part 2：Clean Up the World Day and Ian Kierman's contribution to improving the environment.5．Listen to the whole talk again.Ask students to notice the years that Tom mentions，what happened in these years and many other facts.Make notes in the following table.Suggested answers：Year Event Facts about the event1987Ian Kierman competed in a round－the－world yacht race He was shocked at the pollution in the ocean.1989 Clean－up Day for Sydney Harbour 40 000 volunteers；collected old car bodies，plastics，glass bottles，cigarette butts1990 The first Clean Up Australia Day 300 000 volunteers2001 Clean Up Australia DayMost common kinds of rubbish：cigarettebutts，glass bottles and plastic bags 1993 The first Clean Up the World Day 30 million volunteers in 80 countries2001 Clean Up the World Day 40 million volunteers in 128 countries；cleaned streets，beaches，river banks and parksStep 3SpeakingSince the students have learned much knowledge about global warming by both reading and listening.It's necessary for them to talk about it now.Teach them how to express agreements and disagreements，blame and complaint by showing them the following patterns on the screen.(Slide sho w) Agreement：Exactly.You're right.I agree.That's correct/true/right. Disagreement：Blame and complaint：I'm sorry to bring this up，but...?I'm sorry to have to say this，but... They shouldn't have done it.They are to blame.Perhaps/Maybe they should/ought to... Why don't you do something about it？I'm afraid I disagree with you.I'm afraid not.I don't think so.No way.I don't agree.I doubt...Ask students to read again what Professor Keeling and Li Bin say.Then in groups discuss who you agree with and give e some of the expressions listed above or any others they know.Give the students three minutes to prepare and practice，and then ask two groups to demonstrate their dialogues in front of the whole class.Step 4HomeworkWrite a passage to talk about global warming and people's different views on it.Step 5Reflection after teaching________________________________________________________________________________________________________________________________________________________________________________________________________________________教学参考Ⅰ.国际知名环保组织介绍这些国际性的环保组织克服了重重困难，获得了世界范围内的响应和支持，依靠组织手段，将提倡的环保概念普及，并通过各种环保项目的实施，切实推动世界各地的环保进程。
高中英语人教版Unit4Globalwarming unit4sectionⅰ
Unit 4Global warming随着经济的发展，更多的温室气体被排放，其中大约70%为二氧化碳，全球气候变暖是目前人类面临的最大环境问题。
With the development of economy，more and more greenhouse gases are being discharged into the makes up about 70% of the greenhouse gases，which is considered to be one of the greatest causes of global has harmful effects，causing the sea level to rise and many natural disasters to strike.So we must take effective measures to save our ，we should use more clean energy and less coal and ，we should go to work on foot or by bus instead of driving a car if possible.Third，we should plant more trees，because plants can turn CO2 into importantly，we should form the habit of saving energy in our daily life.1．discharge v t.放出；流出；发射2．take effective measures 采取有效措施1．What causes global warming?2．How many measures must we take according to the passage?【答案】does..Section ⅠWarming Up & Reading—Preparing根据提示写出下列单词1．consume v t.消费；消耗；吃完2．mild adj.温和的；温柔的；淡的3．subscribe v i.同意；捐赠；订阅v t.签署(文件)；捐助4．quantity n. 量；数量5．tend v i.趋向；易于；照顾v t.照顾；护理6．oppose v t.反对；反抗；与(某人)较量7．state v t.陈述；说明8．consequence n. 结果；后果；影响9．range n. 种类；范围10．glance v i.看一下；扫视n. 一瞥看单词学构词consequence 中-ence是名词后缀，如existence，reference，dependence等。
【全程复习方略】(湖北专用)高中英语 Unit 4 Global warming课件 新人教版选修6
③She was over the age limit; _a_s _a_ _c_o_n_s_e_q_u_e_n_c_e, her application was rejected. 她超龄了，因此，她的申请被拒绝了。 ④Jack failed to pass the exam _in_ _co_n__se_q_u_e_n_c_e_o_f_ / _a_s _a_ _c_o_n_se_q_u_e_n_c_e_ o_f_ being lazy in study. 由于懒于学习，杰克考试没通过。
3. It is OK to leave an electrical appliance on _s_o_l_o_n_g_a_s_ (只要) you are using it—if not, turn it off！
4. _I_t_ta_k__es__a_l_o_t_o_f_e_n_e_r_g_y_（需要大量能源） to make things from new materials, so, if you can, buy things made from recycled materials.
承担……的后果
answer for the consequence
对后果负责
of little / no consequence
不重要的，无足轻重的
①He broke the law, and now he must face/take/suffer the consequences of his action. 他违反了法律，现在他必须得为他的行为承担后果。 ②Your opinion is of little consequence to me. 你的观点对我来说不重要。
【点津】
高中英语 Unit 4 Global warming Section Ⅳ Using Lan
Unit 4 Global warming(教师用书独具)WHAT CAN WE DO ABOUT GLOBAL WARMING?Dear Earth Care，I am doing a project on behalf of my school about global warming．Sometimes I feel that individuals can have little effect on① such huge environmental problems．However，I still think people should advocate improvements in the way we use energy today．As I'm not sure where to start with② my project，I would appreciate any suggestions you may have．Thank you!Ouyang Guang关于全球变暖，我们能做些什么呢？亲爱的“关爱地球”组织：我正代表学校做一项关于全球变暖方面的课题研究。
有时候我觉得，像这样一个巨大的环境问题，个人是起不了什么作用的。
然而我仍认为人们应该倡导改善日常能源的消耗方式。
由于我还不清楚该从哪里着手开始我的研究，我希望能得到你们的建议。
谢谢！欧阳光Dear Ouyang Guang，There are many people who have a commitment like yours ③， but they do not believe they have the power to do anything to improve our environment．That is not true．Together，individuals can make a difference④． We do not have to put up with pollution．The growth of the greenhouse gas，carbon dioxide in the air actually comes as a result of many things we do every day．Here are a few suggestions on how to reduce it．They should get you started with your project．亲爱的欧阳光：有许多人承担你这样的义务，而他们不相信自己有能力来影响环境。
高二英语 Unit 4 Global Warming
高二英语 Unit 4 Global Warming高二上学期第九次教案设计人Unit 4 Global WarmingPeriod 1 Warming UpTeaching Goals:1. To arouse Ss’ interest in learning about global warming.2. To get Ss to know the energy source. Teaching procedures: Step 1. Leading-inPurpose: To activate Ss and arouse them to talk about global warming. Step 2 Warming upPurpose: To lead Ss to the topic of this unit. 1. Pair workGet Ss to ask each other the following questions, and then ask them to present it before the class. 2. Group work(1) Get Ss to talk about sources of energy according to the following photos. The above pictures can be used for Ss to talk about, and Ss can also talk as much as they can.By learning Warming Up we all know that energy is so important, but where does it come from?There are different forms of energy: (2) ConclusionWhen energy changes from one form to another, the amount of energy stays the same. Energy cannot be made or destroyed. This fact is called “conservation of energy”. Matter can be made into energy through processes like nuclear fission and nuclear fusion. 3. Competition:Take the quiz below and see whether Ss can fill in the blanks. 4. HomeworkWrite a short composition about sources of energy.Period 2 Pre-reading, Reading, ComprehendingTeaching Goals:11.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:2. Group work Look at the picture, and ask Ss some questions. 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? 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? Step 3. Reading 1. 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 globalwarming or whether it is just a natural phenomenon.(2) Many scientists believe people have caused the increase in theearth’stemperature. 2. ScanningPurpose: To get Ss to have some details in the text.Read the article carefully. Are these statements true or false? Write a T for eachtrue sentence and an F for each false sentence. 3. ListeningPurpose: To train Ss listening ability.Listen to the tape and follow it in a low voice. 4. Group work2Ss are divided into four groups. Each group is supposed to read through eachpart and then discuss them. Part 1 (Paragraph 1) (1) compare 比较● 常见用法：① compare…with… 把…和…比较Compared with him, I am fast. ② compare…to… 把…比作… Life is often compared to voyage. (2) come about发生How did it come about? 那事是怎么发生的? ● 常见词组： come across 偶遇；碰到 come round 恢复知觉， come along 进展；进行 come to 涉及；到达；共计 come out 公开；问世；出版 come to oneself 恢复知觉 come up with 想出 (3) phenomenon n 现象It is only a social phenomenon, but not a phenomenon of nature.Purpose: To have a deep understanding of the text. 1. Group workNow you are going to discuss the statement: We should do nothing about global warming.Follow these instructions:(1) Get into groups of six. Decide which three in your group are going to agreewith the statement(Group A) and which three are going to disagree with the statement (Group B). (2) Group A students discuss why they agree with the statement; Group Bstudents discuss why they disagree.(3) Groups A and B get together. They tell each other the reasons for agreeingor disagreeing with the statement. 2. Individual workAsk Ss to answer the following questions. Present their opinions to otherclassmates.(1) What do you think of global warming?3(2) Do you think it serious? 3. Discussion(1) Global warming refers to an average increase in the earth’s temperature,which in turn causes changes in climate.(2) Earth’s climate has been changing c onstantly over its 5-billion-year history. (3) The earth could be getting warmer on its own. Step 5. Reflective thinkingFirst show the following questions to Ss and then ask Ss to discuss them in groups.1. What do you think cause global warming?2. How does global warming affect you and others? Step 6. Homeworke the new words and expressions to make some sentences.2.Try to write a short composition .The title is “How to slow climate change”,beginning with “Global warming doe s not have to occur .It is possible forthe human race to slow down global warming and maybe even remove all of theeffect that people have on the climate.”Period 3 Learning about LanguageTeaching Goals:1.To enable Ss to master some useful words and expressions.2.To discover useful structures.3.To get Ss to have knowledge of the grammar point: the use of it.Teaching Procedures: Step 1. Free talkGet Ss to talk about what causes global warming. Step 2. Word studyPurpose: To consolidate the words and phrases in the text. 1. IndividualworkGo over the new words and phrases in the previous sections. Then complete each sentence with one of those new words or phrases.(1) Charles Keeling collected on the carbon dioxide content inthe atmosphere over a forty-year period .He found that the amount of carbon dioxide _________ increasing during that time.(2) Although we are burning coal in huge every year, we won’t of it for centuries.(3) If the amount of greenhouse gases continues to we could be4facing a global.(4) Many scientists believe that global warming has through the burning of fossil fuels. They do not think that ignoring the issue is worththe_______.(5) describes weather conditions over a period of years in aparticular place.(6) The of a rising sea level would be widespread flooding.(7) The use of energy in Susanna’s country is low the use ofenergy in the USA.(8) The warming of the earth is a that cause great concern. (9)The shows temperature changes during the 20th century.(10) One hectare of forest can absorb 23 tons of carbon dioxideyear.2. Pair workLook at the two graphs on page 26. Then complete the paragraphs about themwith appropriate words. Do the exercise in pairs.The first graph shows the global between and .The temperature and decreased over this period but on the whole it by around one degree Fahrenheit. During this time, the earth reached its temperature in about and its highest in 2000.There was a steadyin the temperature during thetwenty years after 1980.We can see from the graph that the earth hasbecome since early last century.The second graph shows the amount of in the atmosphere fromto. The carbon dioxide steadily over this forty-year period .Itwent up from 315 to 370 parts million. Step 3. Grammar1. It构成的英语强调结构What s it that Professor Liu teaches us this year? 2. 强调句型的特点去掉It is(was)及that(who)后，在不添词、不减词的前提下能重新构成一个意义完整的句子。
高中英语《Unit 4 Global warming》Usin
号顿市安谧阳光实验学校《Unit 4 Global warming》一、用所给词的适当形式填空1．The invention of paper is a great (contribute) to human civilization.2．They sell a wide range of (electricity) appliances — washing machines, dishwashers and so on.3. Waste water from the factory is the main cause of the____ (pollute)．4.There has been serious (disagree) between the two political parties over this question.5．Plant (grow) is most noticeable in spring and early summer.6．There are many (educate) who are against this plan.7.The company’s (commit) to providing quality at a reasonable price has been vital to its success.8.It’s the best result that could be expected under the_____ (circumstance)．二、完形填空Global warming is changing the migration (迁徙) patterns of many birds, altering flight paths that have remained unchanged for generations and that were firmly anchored (稳固；固定) in their genes, scientists __1__.“Warming in Europe has changed _2__ the migration direction of the warbler (莺)，” said behavior __3__Eberhard Curio__4__ Bochum University in western Germany’s Ruhr region.The small birds native__5__ central and eastern Europe _6___to migrate southwest to spend winter in southern France, Spain___7___northern Africa. But now Curio says many of them fly westward to spend the __8__months in southern England.“__9__ changes in migration patterns are the result of _10__ selection. The birds that fly in a _11_direction will die.” the biologist said, __12__ the birds that fly to more favorable destinations (终点；目的)pass on this behavior pattern to their __13__.Researchers __14__ believe that birds use a kind of second sense to orient their migration patterns, either a __15__orientation (定向；定位) based on the position of the sun, or with the __16__ of a sort of inner compass.____17__ animals possess a precise inner clock, they can determinetheir position by the sun and the stars，said Curio. Navigation (航行) by inner compass __18___the Earth’s magnetic fie ld.___19__, the routes taken by different __20__ of birds are very much influenced by their flight capabilities.1.A.say B．interpret C．recall D．solve2. A．verbally B．likely C．similarly D．probably3. A．learner B．researcher C．doctor D．fellowship4. A．to B．of C．for D．on5. A．to B．with C．onto D．in6. A．tried B．forgot C．remembered D．used7. A．or B．such as C．and D．to8. A．hotter B．cooler C．colder D．warmer9. A．Such B．So C．Such many D．Many a10. A．artificial B．natural C．intentional D．physical11. A．unfavorable B．advantageous C．favorite D．bad12. A．but B．therefore C．while D．thus13. A．forefathers B．parents C．counterpartsD．offspring14. A．completely B．constantly C．rightly D．currently15. A．visual B．oral C．conscious D．hearing16. A．combination B．complaint C．aid D．storage17. A．But B．Since C．Then D．Thus18. A．relies on B．leads to C．determines to D．decides to19. A．Therefore B．In addition C．However D．And20. A．colors B．sizes C．species D．foods三、短文改错In order to realize his dream, Bill Gates, richest man in the world, gave up studying in Harvard University, that is the most famous in the world. He set up a company and researching the computer software. As an old saying go, “Interest is the best teacher.” I quite agree with this idea. I began to be crazy about English when I was a little girl. I got extreme interested in foreign cultures or customs. To meet me curiosity, I read in English stories every day. It seemed to be the best “meal” of a day. As a result, I always did very well in English exam. Interest is the key of success.参考答案：一、1. contribution2. electrical3. pollution4. disagreement5. growth6. educators7. commitment8. circumstances二、1. 解析：选A。
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Unit 4 Global Warming
Part IV Using Language
[学习目标]
1.通过阅读文章能了解我们能为环境保护做点什么，并给出一些实际的建议。
2.学会有关气候、能源、环保的词汇，并能表达同意，责备和抱怨等态度。
3.掌握重要的语言知识，并能实际运用。
一、[自主预习]
Step1. Lead in
Have you ever seen the film The Day After Tomorrow?
What kind of disasters have you seen in the film?
Step2. Skimming
Skim the first letter, and answer the questions below:
1. Who is the writer? ______________________________
2. Read the second email, and answer the question:
Does Earth Care agree with Ouyang Guang’s opinion that individuals can have no effect?
_________________________________________________________________ Step3. Scanning
Scan the letter and list Earth Care’s suggestions in the chart on P30, and discuss whether you can carry out each suggestion. Give reason for you answers.
Step4. 写写记记：仔细读读课文，你会发现他们的哟！
三、[基础知识]
Step 4. Language points
1.【教材原句】 As I’m not sure where to start with my project, I would appreciate any
suggestions you may have.
【结构归纳】where to start with my project 为 , 在句中作成分.
找出书中类似的用法:
.
【操练巩固】
As I’m not sure we use water, I would appreciate any suggestions you may have. (advocate) 由于我不确信如何提倡改进使用水源，我非常感激你给的一些建议。
2.【教材原句】They should get you started with your project.
Get your parents to buy things that are economical with energy.
【结构归纳】 get sb./sth. done ; get sb. to do sth.
想一想: have的用法?
【操练巩固】
It’s difficult to ________ when you can’t get it across to others. (让你的想法被别人接受，accept)
3. 【教材原句】It is OK to leave an electrical appliance on so long as you are using it－if not, turn it off！只要你在使用电器设备，你便可以把它开着。
如果不用就把它关掉！
【结构归纳】(1) so long as＝as long as ,意思为“”，引导从句。
（2）as long as只能用于肯定句，而so long as既可用于肯定句又能用于否定句。
（3）as long as还可意为“与……一样长，长达……”。
【操练巩固】
1.You may borrow the book .（keep）
只要你保持书本干净，你可以借这本书。
2.____________yourself，you’ll win.（have）
只要你对自己有信心的话，你会赢的。
四．【当堂检测】
1.You can go out , ____________ be back before 11 o’clock. (as)
只要你承诺在11点前回来的话，你就可以外出。
2.It is for the fact _____________ ___ that first aid means life and death. (count)
正是鉴于分秒必争的事实，急救意味着生与死。
3.The wife _______ him. As a result, they got divorced. (put)
妻子发现很难忍受他了。
因此，他们离婚了。
4.It is the burning of more and more fossil fuels ________ in this increase in
carbon dioxide. (result) 正是由于越来越多的燃烧化石燃料导致了二氧化碳的增加。
5.It is OK _________ so long as you are using it. (leave) 只要你在用着电器，让它开着是可以的。
6.the plan, he first ____ ________ by his co-workers. (carry, get)已经知道如何实施这个计划，他首先让其同事来发出倡议。