【开学大礼包】高中英语 Unit 4 Global warming Period 2 Language Study精品教案 新人教版选修6
高中英语Unit4GlobalwarmingSectionWarmingUpReadingLangu
(1) How does it come about that ...? 某事怎么发生的……？
(2)come across
偶遇；碰到
come along
进展；进行
come out
公开；问世；出版；被获知
come round
恢复知觉；苏醒过来
come to
涉及；共计；达到
come up with
提出
③As a result of destroying the forests, a large quantity of desert
has covered the land. 由于破坏了森林，大量的沙漠覆盖了陆地。
④He likes reading and always buy books in quantity. 他喜欢阅读，总是成批地买书。
tend vi.趋向；易于(be likely to do)；照顾；vt.照顾；护理(care
for)
[用法]
(1)tend to do/be ...
容易/易于/趋向……
tend (to) sb./sth.
照顾/护理/看护……
(2)tendency n.
趋向；倾向
have a tendency to do sth. 倾向于做……；喜欢做……
13． steady adj.平稳的；持续的；稳固的→ steadily adv.平均 地；持续地
2019版高考英语 Unit 4 Global warming(词汇考查+词汇应用)(含解析)新人教
Unit 4一、词汇复习（一）单句语法填空1． ________ news of the mayor's ing to our school for a visit was given out on the radio yesterday.答案：The 句意为：市长来我们学校参观的新闻昨天通过收音机发布了。
名词news后有介词短语修饰，起限定作用，表特指，故填the。
2．(2015·浙江杭州质检改编)In Germany, ________ successful project, which roughly translates as “adopt a grandparent”， has been running with a great success.答案：a 句意为：在德国，一个名为“领养祖父母”的项目已成功运行。
project为单数可数名词，此处意为“一个成功的项目”，表泛指。
故填不定冠词a。
3．(2015·陕西宝鸡中学期中改编)—Mom, why can't I have ________ new bike？—Dear, you know, money doesn't grow on trees.答案：a 句意为：——妈妈，我为什么不能要一辆新自行车？——亲爱的，你要知道，赚钱可不是件容易的事。
bike为单数可数名词，是首次提到，此处表泛指，故用不定冠词a。
4．(2015·安徽江淮十校联考改编)________ wish always remains unrealistic that you can e first in the final exam when you make no efforts at all.答案：The 句意为：你不付出任何努力而想在期末考试中得第一名的愿望是不现实的。
wish后有that引导的同位语从句修饰，表特指，故填定冠词the。
高中英语《Unit 4 Global warmi
号顿市安谧阳光实验学校《Unit 4 Global warming》Ⅰ.选词填空If youdoor.2.Buy vegetables in small , for your immediate use.3.People to need less sleep as they get older.4.Most of us are to the death penalty.5.The government needs to clearly its policy on this issue.6.Even the cheapest property was out of our price .7.The man nervously at his watch.8.Paul is making progress.9.I asked a few questions of Ellen as we sat there.10.He broke the law，and now he must face the of hisactions.Ⅱ.单项填空1．The committee is totally opposed ______any changes being made tothe plans.A．of B．on C．to D．against2．We must take all possible measures________ to improve working conditions.A．to tend B．tending C．tended D．being tended3．He slipped and had his leg broken.________， he will have to be away from school for two or three months.A．In any case B．After all C．As a consequence D．In this way 4．The manager________ his eyes down the list of names quickly to see if anyone was left out.A．glared B．stared C．glanced D．looked5．Such fine work requires a good eye and a ________hand.A．calm B．fluent C．frequent D．steady6．He was so angry at that time that he shouted at anyonewithin________.A．limit B．range C．edge D．centre7．—What about Mary’s idea?—Very good! But not many people________ the idea that money brings happiness.A．subscribe to B．take to C．contribute to D．relate to8．________ is no doubt that Sophie will be able to win the first prize in the contest, for she is always studying hard.A．This B．It C．There D．Here9．Though it was raining, they ________working until it was finished.A．kept up B．kept on C．kept from D．kept out10．As is known to all, failure usually ________laziness while diligence can________ success.A．results from; lie in B．results in; result fromC．leads to; lie in D．results from; result inⅢ.阅读理解ATuvalu, a tiny country in the Pacific Ocean, has asked for help as it will be swallowed up by the sea.Storms and huge waves are a constant threat and none of Tuvalu’s nine little islands is more than five meters above sea level. Salt water is already entering the country’s drinking water supply, as well as damaging plants that produce fruit and vegetables. Without urgent help, the country’s days are numbered.But Tuvalu is not the first place to face sinking into the sea. Venice, a historic city in Italy best known for its canals, has sunk about 24cm over the past 100 years. Experts say that it will have sunk another 2050cm by 2050. A century ago, St. Mark’s Square, the lowest point city, flooded about nine times a year. Nowadays, it happens more than 100 times. While Venice is slowly sinking into the mud on which it stands, global warming causes Tuvalu’s rising sea level.The average global temperature has increased by almost 0.5 centigrade degrees over the past century; scientists expect it rise by extra 13 degrees over the next 100 years.Warmer weather makes glaciers (冰川 ) melt, adding more water to the ocean. The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 1025 cm in the last 100 years.The main cause of global warming is human pollution. Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO2. This adds to the power of the greenhouse effect, making the planet even warmer.Many scientists believe that, if the warming is not stopped, there will be huge climate changes. The sea level could rise by one meter thiscentury.Should this come true, the sea will swallow up millions of homes and the world will be flooded with “climate refugees” looking for somewhere to live.1. We can infer from the second paragraph that________.A．Tuvalu is in danger of being swallowed up by the seaB．all Tuvalu’s islands are about five meters above the sea level C．drinking water in Tuvalu has been destroyedD．Tuvalu is often flooded by storms and waves2．The author uses Tuvalu and Venice as examples in order to explain________.A．they are the first place sinking into the seaB．they are both sinking into the mud where they standC．they will disappear in the futureD．their trouble is caused by the global warming3．Put the following events in the right order.a．Glaciers began to melt.b．People burn coal, oil and gas.c．The greenhouse effect is growing.d．The earth is getting warmer and warmer.e．The sea level is rising.f．More CO2 is produced.g．Many places are sinking into the sea.A．d, f, b，c, a, e, g B．b, f, c, d, e, a, gC．f, c, b, d, a, e，g D．b, f, c, d, a, e, g4. What does “climate refugees” mean?A．People who are forced away from their homeland by climate.B．Climate changes.C．Rare animals.D．Climate effect.5. Which of the following is NOT true according to the passage?A．Tuvalu’s nine little islands are less than five meters above the sea level.B．The average global temperature has risen by 13 centigrade degrees over the past 100 years.C．The warmer temperature causes the sea level to rise.D．There will be huge climate changes unless the warming is stopped.BBEIJING, China —Pollution in China remains very serious as the country’s rapid economic growth brings new environmental problems, a minister said Saturday.Vice Environment Minister Zhang Lijun said China has made progress on environmental protection, but admitted that its rapid economic growth over the past decade has had a negative effect on the environment.“Our rapid economic development has continuously brought our country new environmental problems, particularly dangerous chemicals, electronic waste and so on. These environmental pollutants (污染物) bring new problems and affect human health，” Zhang told a news conference.He said that emissions (排放) of traditional pollutants remain high and some areas have failed to meet government standards.The minister noted that rapid development in the next five years would increase the need for China to improve environmental protection and shift to a more sustainable(可持续的) model of economic development from its dependence on industries which consume huge quantities of energy.China is focusing on clean energy, including solar, wind and nuclear power, as one way to reduce its dependence on coal, which generates threequarters of its electricity and is also used for winter heating in northern cities. China also hopes the strategy will reduce its demand for oil and gas and increase economic growth and jobs.Zhang told reporters there was no plan to adjust China’s overall strategy for nuclear development but he said Beijing will learn lessons from Japan after a violent earthquake resulted in a radioactive leak (放射能泄露)．“Some lessons we learn from Japan will be considered in the making of China’s nuclear power plans，” he said. “But China will not change its determination and plan for developing nuclear power.”6．According to the minister, the pollution problem requires China to________.A．slow its economic developmentB．ask industries to meet government standardsC．protect the environment firstD．transform its economic development model7.According to the text, which of the following is TRUE?A．Rapid economic growth helps to improve the environment.B．Dangerous chemicals are one of the traditional pollutants.C．Coal is used more in northern cities than in southern cities.D．The use of clean energy will help increase job opportunities.8．The underlined word “generates” in Paragraph 6means“________”．A．reduces B．transports C．produces D．needs9. What do the last four paragraphs mainly talk about?A．Japan had a violent earthquake recently.B．China will learn to use nuclear power from Japan.C．Rapid economic growth caused some problems in China.D．China’s economic development will shift to depend on clean energy.10. What is Zhang’s attitude towards what happened in Japan?A．He is astonished at it and feels pity for the Japanese people.B．He thinks Japan should do something to prevent it happening again.C．He thinks China will pay more attention to nuclear safety.D．He doe sn’t think it will affect China’s nuclear power plans at all.参考答案：Ⅰ.选词填空1. subscribe2. quantities3. tend4. opposed5. state6. range7. glanced8. steady9. random10. consequencesⅡ.单项填空1. 解析：选C。
选修六Unit4 Global warming——全球变暖-110页精选文档
Unit 4 Global warming——全球变暖
2．There is a growing __te_n_d__en__cy____( 倾向；趋势)to regard money more highly than quality of life. 3．The new computer system should solve a whole __r_a_n_g_e______(范围；种 类)of problems.
栏目 导引
Unit 4 Global warming——全球变暖
5．—Can I ask you a few straightforward questions about yourself?
—No problem.I like ________when people are open and direct.
Unit 4 Global warming——全球变暖
Unit 4 Global warming ——全球变暖
栏目 导引
Unit 4 Global warming——全球变暖
基础盘点自测自评
核心单词 1．It’s said that the plan has received __w_i_d_e_sp__re_a_d__(普遍的) support throughout the country.
栏目 导引
Unit 4 Global warming——全球变暖
10．____o_n_b__eh__a_lf_o_f___ 代表……一 方；作为……的代言人 11．__p_u__t _u_p_w__it_h_____ 忍受；容忍 12．___so__lo_n__g_a_s______ 只要 13．___a_n_d__so__o_n______ 等等
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 fiss ion 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, Comprehending 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:2. Group workLook 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. 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 globalwarming or whether it is just a natural phenomenon.(2) Many scientists believe people have caused the increase in the earth’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 each true 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 workSs are divided into four groups. Each group is supposed to read through each part and then discuss them.Part 1 (Paragraph 1)(1)compare 比较●常见用法：①compare…with…把…和…比较Compared with him, I am fast.②compare…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 other classmates.(1) What do you think of global warming?(2) Do you think it serious?3. Discussion(1) Global warmin g refers to an average increase in the earth’s temperature,which in turn causes changes in climate.(2) Earth’s climate has been changing constantly 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 does not have to occur .It is possible for the human race to slow down global warming and maybe even remove all of the effect 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. Individual workGo 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 in theatmosphere 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’tof it for centuries.(3) If the amount of greenhouse gases continues to we could befacing a global.(4) Many scientists believe that global warming has through theburning of fossil fuels. They do not think that ignoring the issue is worth the_______.(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 of energyin 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 them with 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 steady in the temperature during the twenty years after 1980.We can see from the graph that the earth has become since early last century.The second graph shows the amount of in the atmosphere from to. The carbon dioxide steadily over this forty-year period .It went 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-section 2
Unit 4 Global warming-section 2Part Two: Teaching Resources (第二部分：教学资源)Section 2: Background information on THE EARTH ISBECOMING WARMER—BUT DOES IT MATTER?I. What is global warming?Global warming is the name of the theory (idea) that the world's atmosphere (air) has become hotter over the last two hundred years. It is also used as the name of this event (an event is sth. that happens). Some people say that global warming is a very serious problem for the world, that it causes floods for example. Others say that there is nothing for the world to worry about.It is a fact that the atmosphere of the world is in general about a half of a degree Celsius hotter than it was two hundred years ago. But many people disagree about whether this is caused by man's pollution (from cars and factories for example), or a natural change.II. What is greenhouse effect?The greenhouse effect is a way that the sun's rays make sth. warmer.A greenhouse is a glass or plastic building where people raise plants. The rays of the sun shine into the greenhouse and become warmth. The glass or plastic holds the warmth inside the greenhouse.We can also see the greenhouse effect when the sun makes the inside of a car hot. Many people are very interested in the greenhouse effect in the atmosphere of the Earth. Factories, farms, and other things that human beings do make many different gases that go into the Earth's atmosphere. The gases carbon dioxide, methane, and chlorofluorocarbons make the atmosphere hold more of the sun's heat, so the Earth might get warmer. If the Earth does get warmer, this could cause many serious problems. Different parts of the Earth could become warmer or colder, wetter or drier. The ice at the north and south poles could melt, which would make the sea level higher, and flood many cities that are close to the sea.Scientists, politicians, and ordinary people disagreeabout what is happening and what might happen. Scientiststhink that weather has been especially warm the last fewyears, but they disagree about whether this warming iscaused by the things that human beings are doing or is happening naturally.III. What is Earth Care International?Earth Care builds the awareness, knowledge, and commitment inyouth necessary to create a healthy, sustainable future. Ourapproach is based on the recognition that sustainability canonly be achieved by linking issues of economics, socialjustice, and the environment infused with a multiculturalawareness.We develop young visionary leaders capable of creating an abundant and sustainable world. These visionary leaders will make choices that will improve their relationship to the environment, one another and ultimately the world.We educate youth to understand the local and global connections between human and natural systems.“A movement that's courageous and visionary on the environment but cowardly and ignorant about the social issues, will fail. And on the other side, a movement that is visionary and passionate on the social side but is ignorant and indifferent on the ecological side will also fail. There's a light at the crossroads. Hope is at the crossroads.”IV. Celebrate Earth Day's 35th Anniversary! “地球日”三十五周年纪念！On April 22, 1970, 20 million people across America celebrated the first EarthDay. It was a time when cities were buried under their own smog and pollutedrivers caught fire. Now 35 years later, Earth Day is being celebrated aroundthe globe. Through the combined efforts of the U.S. government, grassroots organizations, and citizens like you, what started as a day of national environmental recognition has evolved into a world-wide campaign to protectour global environment.V. Earth Day background informationOur planet is a complex system of land, air, and water. Living things depend on each other and this system for existence. Over the thousands of years since life has existed on the earth, it has undergone some changes. The following are some of these changes:Many species became extinct before mankind made its appearance, however, since humans have existed on the earth, the extinction rate has risen dramatically. More than 4,000 species are currently considered threatened. Plant and animal life become endangered for many reasons. Forest depletion, hunting, and pollution are the most obvious factors. When an animal becomes endangered, dozens ofother species can also become endangered. For example, elephantsdisappeared from southern Africa about 80 years ago because ofhunters. Elephants continue to be hunted, mainly for their costlyivory tusks. The endangerment of elephants also has endangeredsuch animals in their area as wildebeest and antelope who live offof the open-grassland which elephants create by eating their way through a jungle.Oxygen-producing trees and plants are being cut down for the purpose of growing foods, grazing livestock, making paper products, etc. The cutting down of forests puts forest wildlife at risk and decreases the oxygen in the air. It also defaces the natural beauty of the planet. Tropical rain forests are often cleared for farming. The soil in these forests are poor in nutrients, and within a few years the crops fail and the land is abandoned. New forests are cleared.Pollution has become more and more a problem, especially in the past century withthe drastic increase in technology. Garbage, sewage, chemicals, and oil are being dumped into the ocean. As human population grows, people are looking to the ocean more for resources. Landfills and littering have polluted the land. Dangerous levels of chemical emissions from cars, planes, factories, aerosol cans, etc., enter the air without end. Plants and animals are dying because of pollution.Ozone is a form of oxygen that has collected in a layer about 30 km above the earth's surface. This ozone layer protects us from most of the dangerous ultraviolet radiation from the sun. Without this layer, living things could not thrive onthe earth. Satellites have detected in the last ten or so years damage doneto the ozone. The damage is often referred to as a hole in the ozone. This damagehas been caused by certain chemicals being emitted into the atmosphere that react with the ozone. One major chemical is called chlorofluorocarbons (CFCs), which are commonly used in such products as solvents used for cleaning electronics such as television and computer circuit boards, cooling fluid in automobile air conditioners, aerosol spray cans, etc. Ozone depletion has effected the temperature of the earth. Some scientists say that if CFCs were not in existence, the earth would be cooler now than it presently is. This global warming is often called the greenhouse effect.Environmentalists have been actively aware of these issues, and are doing their best to promote awareness. In the late sixties, Senator Gaylord Nelson of Wisconsin first suggested the idea of an Earth Day to bring people to the realization that Earth has some problems, and we as humans need to do something about it. The first Earth Day celebration took place on April 22, 1970. It was a nationwide focus. Twenty-million Americans joined in to proclaim the message, “Give Earth a Chance.”A series of events took place on a community level, most of which were organized by student groups. Since then, Earth Day has expanded. The tenth anniversary of the celebration in 1980 was sponsored partly by The United States Environmental Protection Agency. The twentieth anniversary in 1990 was sponsored by hundreds of environmental organizations across the nation. Every year on April 22, all Americans are asked to celebrate Earth, to take a look at what is being done to help our ecosystem, and to ask ourselves, “What am I doing to help?” Many people use the day to plant flowers or trees, clean up communities, promote recycling, forest and wildlife protection, etc., and look to the future of the earth.。
高中英语Unit4 Global warming文章 Global Warming人教版选修六
Global Warming: Whose Problem is it Anyway?It no longer seems to make a difference who started the global warming problem, and by “problem,〞I am referring to the likely enhancement of the naturally occurring greenhouse effect as a result of human activities. Those activities primarily center on the release of carbon dioxide through the burning of fossil fuels such as coal, oil and natural gas. Other heat-trapping greenhouse gases include methane, nitrous oxide and chlorofluorocarbons (CFCs).In their march to industrialization, rich countries have basically saturated the atmosphere with these heat-trapping gases. Each year, the atmospheric concentration of carbon dioxide (arguably the most important of the greenhouse gases) increases by more than a part p er million by volume. Doesn’t that sound infinitesimal? It does to me. But, infinitesimal concentrations become significant when accumulating in the atmosphere year after year, as carbon dioxide has since the onset of the Industrial Revolution in the mid-1700s.As we settle into the 21st century, new major greenhouse-gas-producing nations are appearing on the scene, such as India and China. They want to develop their economies, and they have a right, as well as a responsibility, to their citizens to do so. But they are also going to be emitting a larger share of heat-trapping gases, overtaking the industrialized countries that have been the dominant producers of greenhouse gases in the past. Now what?A couple of decades ago, I chose to divide the observers of global warming into three groups: hawks, doves and owls. In the mid-1980s, there were some hawks (those who are convinced beyond a reasonable doubt that human activities not only can, but also are, altering the chemical composition of the atmosphere in ways that influenceglobal climate); some doves (those who believe that Earth’s atmosphere is so robust that it can absorb any insult that humans might do to it. Besides, if it gets really serious, either technology will save us, or we Americans can move north into Canada); and mostly owls (those who lean either toward the hawks’ or the doves’ view, but are still not sure what the truth is).Twenty-five years later, the hawks have increased in number, while the doves are about the same with maybe a few m ore vocal personalities. And the owls’ numbers have reduced due to new scientific information — appearing in the media alongside scary photos of disintegrating ice sheets in the Antarctic and depletion of sea ice in the Arctic, stories about a seeming incr ease in various “superstorms,〞and advertisements from Shell and BP telling us that they too are worried about global warming.Since 1985, however, another category has emerged: the ostrich. The ostriches include those who refuse to think about global warming as a problem, who refuse to consider any new scientific research, and who think that someone somewhere will solve this problem before it becomes a crisis.Global warming is not a hoax. It actually happens naturally. Industrialization processes in rich countries and now in developing ones are abetting the naturally occurring greenhouse effect.Some say we are spinning out of control, pointing to the Arctic as a “canary in the global warming mine.〞The Inuit are worried. They are on the proverbial firing line, according to scientists who remind us that a 1 degree warming in the mid-latitudes will be associated with a 3 to 4 degree warming in the higher latitudes. What we are hearing from the scientists is that we are at or near tipping points — irreversible thresholds of change — for certain species, countries and civilizations.But although we talk a lot about doing something about global warming, we do not have a whole lot of meaningful action. “Let them eat carbon dioxide〞seems to be the current response of various governments, despite words of concern. Is anyone trying to cut back on carbon dioxide emissions?Cutting back on carbon dioxide production is much easier to say than to do. The task of cutting back worldwide is made much more difficult because of the virtual lack of participation of the United States as a leader on the global warming issue in the international community. It is hard to keep bailing out the water at one end of a sinking boat, while someone at the other end insists on drilling holes in the hull.The business community, at-risk cities and island nations are increasingly calling for action to combat human-induced global warming. What is needed? Only an active government policy around which a coalition can rally will thoroughly address the complex issue.Alas, the issue demands government leadership from the “bully pulpit〞that calls for and wholeheartedly supports an all-out “war on global warming.〞In my view, it is the only way to address the global warming problem with some sense of optimism.Societies need to find new and more efficient ways to fuel their growing economies. The wars on crime, prostitution, alcohol, drugs and even terror are not really winnable wars. They are not winnable in the sense that views on these issues represent underlying differences of opinion. However, the physics of the atmospheresuggests that we (civilizations) are on a collision course with Mother Nature, and if atmospheric science is correct, there is little time for delay.The war on global warming should begin now. With government support (moral and financial) and a search for new ways to keep our industries progressing withoutadding greenhouse gases to the atmosphere, there is a real chance for the global community to pull together.Technology alone, especially if it is expected to be applied only at the proverbial 11th hour, can’t save us from many of the projected and foreseeable negative impacts of global warming. For an example of thinking ahead, take the Netherlands.The Dutch have successfully fought off the floods of the North Sea for centuries, with few breaches in recent times (1953 comes to mind). The Netherlands have even contracted with the U.S. federal government for a few hundred million dollars, to assist in developing levees that can withstand certain intensities of tropical storms around New Orleans.Despite their levee-making skills, however, the Dutch know their limits. The Netherlands is now working to develop a “Hydropole,〞a city that can live on the rising waters. They know they need to do something to protect the 70 percent of the country that is below sea level, when a warmer atmosphere leads to rising seas.Other countries need to follow by accepting the potential changes that lie ahead, and working now to plan for those changes and to curb actions that would otherwise fuel more change. Only with an aggressive war on global warming, supported by the entire international community of nations and with participation of the United States, can we learn to live within the guidelines of nature, respecting her thresholds of change by choosing not to cross them.。
高中英语Unit4GlobalwarmingSectionⅠWarmingUpPre-rea
Unit 4 Global warming全球变暖对我们有什么影响呢？科学家已经找到了全球变暖和哺乳动物体型大小之间的联系，比如,随着温度的升高，马的个头变小，反之则变大。
“Global warming could make humans shorter，”warn researchers who claim to have found evidence that it caused the world’s first horses to shrink nearly 50 million years ago．In fact，a team from the universities of Florida and Nebraska says it has found a link between the heating up of the Earth and the size of mammals—horses，in this case．Researchers used fossils to follow the evolution of horses from their earliest appearance 56 million years ago．“As temperatures went up their size went down,and vice versa（反之亦然）；at one point they were as small as a house cat，”said Dr．Jonathan Bloch，curator(负责人) of the Florida Museum of Natural History．The researchers say that the current warming could have the same effect on mammals—and could even make humans smaller．Horses started out small，about the size of a small dog like a miniature schnauzer(小型雪纳瑞犬）．What's surprising is that after they first appeared，they then became even smaller and then dramatically increased insize,and that exactly corresponds to the global warming event，followed by cooling．“It had been known that mammals were small during that time and that it was warm，but we hadn't understood that temperature specifically was driving the evolution of body size," Dr．Bloch said in the Science journal．[阅读障碍词］1．claim v．宣称，声称2．shrink v．收缩，皱缩3．evolution n．演变,进化，发展4．current adj．当前的，现在的5．dramatically adv．突然地，巨大地，戏剧性地6．correspond v．相一致，符合［诱思导读]1．From the passage，we know that mammals become smaller ．A．on account of the bad environmentB．due to the evolutionC．because of the global warmingD．for lack of food and water2．What should we do in our daily life to reduce global warming?［答案］1．C 2．The answer may vary．Ⅰ．匹配下列单词的词性及汉语意思（）1．consume A．adj．温和的；温柔的;淡的( )2．mild B．n．现象（)3．random C．vt．消费；消耗；耗尽；吃完( ）4．phenomenon D．adj．胡乱的；任意的（）5．tend E．n．结果；后果；影响（)6．trend F．n．趋势;倾向；走向（)7．state G．vi．趋向；易于；照顾vt．照顾；护理（）8．consequence H．n．种类；范围( ）9．range I．vi．看一下；扫视n．一瞥( ）10．glance J．vt．陈述；说明［答案]1－5 CADBG 6－10 FJEHIⅡ．选择下列句中词组的汉语意思A．大量的B．导致C．发生；造成D．反对，E．同意；订阅F．涨价；上涨2．How did this dangerous state of affairs come about？3．The import of cotton goods went up sharply in 1986．4．At first he was opposed to our plan，but we managed to argue him round．5．There are so many reference books，and which one do you want to subscribe to？6．Quantities of food were spread out on the table．［答案]1－6 BCFDEATHE EARTH IS BECOMINGWARMER－BUT DOES IT MATTER？During the 20th century the temperature of the earth rose about one degree Fahrenheit． That probably does not seem much to you or me,but it is a rapid increase when compared to other natural changes①． So how has this come about and does it matter②？Earth Care’s Sophie Armstrong explores these questions．地球在变暖——但是这会带来什么影响吗?在20世纪期间，地球温度大约上升了1华氏度。
【开学大礼包】高中英语 Unit 4 Global warming Period 1 Warmi
Unit 4 Global warming单元要览本单元的中心话题是人类当今面临的环境问题，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。
Period 1 Warming Up，Pre－reading，Reading and Comprehending整体设计教学内容分析This is the first teaching period of this unit.The central part of this period is the reading passage with the title of “The Earth Is Becoming Warmer—But Does It Matter？” talking about the global issue which has a great effect on human beings' life.Warming Up gives six pictures to help students list the sources of energy they can think of in our daily life. Then they will be led to discuss which energy source is “renewable” and which is “non－renewable”．This part is designed to help the students to recall their background knowledge about energy and prepares students for the whole unit.Pre－reading provides a picture of a greenhouse and then tells us what a greenhouse is and what “greenhouse gases” are. The students will be led to discuss what they think greenhouse gases do，leading to the topic of the reading passage.Reading is a passage from an environmental magazine for young people. It puts forward the possible effect of increased carbon dioxide in the atmosphere and different points of view about it. It also analyzes the causes of the earth's increased temperature. It poses questions and encourages students to think about the issues. There are two graphs in it that tell us the “temperature difference from long－term average,1860－2000” and “carbon dioxide content in the atmosphere,1957－1997”．Characters in the passage—Dr Janice Foster，George Hambley and Charles Keeling are all real persons and their views reflect the views of some scientists today.Comprehending consists of three written or oral exercises for the students to do so as to help the students to get a better understanding of the text，that is to say，to help the teacher to check how much the students have understood the text.三维目标设计Knowledge and skills1．To know the meanings of the following new words and phrases：consume(消费；消耗；耗尽)，come about(发生；造成)，random(胡乱的；任意的)，phenomenon(现象)，subscribe(同意；捐赠；订阅；签署文件)，subscribe to(同意；赞成；订购)，fuel(燃料)，quantity(量；数量)，quantities of (大量的)，tend(趋向；易于；照顾)，go up(上升；增长；升起)，per(每；每一)，data(资料；数据)，result in(导致)，trend(趋势；倾向)，catastrophe(大灾难；浩劫)，flood(洪水；洪灾)，oppose(反对；反抗)，opposed(反对的；对立的)，be opposed to(反对)，consequence(结果；后果)，state(陈述；说明)，range(种类；范围)，even if(即使)，keep on(继续)，glance(看一下；扫视)，steady(平稳的；持续的)，steadily(平稳地，持续地)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Warming up1．Warming up by reading and talking：Read through the exercise with the class. Put students in groups of four to talk about what we use energy for，what are the sources of these energy and whether the sources are renewable or non－renewable.Suggested answer：The six photos are：windmills；a coal power station；an oil refinery；a nuclear power plant；solar panels；a hydro－electric dam.2．Warming up by discussion：Let the students have a discussion and collect suggestions from students and write them under the appropriate heading.Suggested answer：Pre －reading1．Show a picture of a greenhouse to students and ask them what a greenhouse is made of and what its purpose is.Suggested answer ：It's made of glass and plants can grow in it when it's cold outside.Ask the students how it works.Suggested answer ：The glass traps the heat from the sun ，making the air warm so that plants grow better.2．Ask students what they think “greenhouse gases” are and what they think greenhouse gases do. Look at the picture above and explain it to their partners.Suggested answer ：Greenhouse gases perform the same function as the glass in a glasshouse ：they trap the heat of the sun and keep the air surrounding the earth warm. This is called the greenhouse effect.)Reading and comprehending1．Fast readingAsk students to read the passage quickly 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?________________________________________________________________________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. 2．Detailed reading(1)Read the passage carefully and judge whether the statements are true(T) or false(F)．①Janice Foster believes that global warming is caused by the burning fossil fuels.()②Natural gas is a greenhouse gas.()③Carbon dioxide is a byproduct of burning fossil fuels.()④People accept Charles Keeling's data because he took accurate measurements.()⑤Flooding could be one of the effects of future global warming.()⑥George Hambley believes scientists are just guessing about the effects of global warming.( )⑦George Hambley is worried about the effects of carbon dioxide on plant growth.( )⑧It is clear what the effects of global warming will be.()(Suggested answers：TFTTTTFF)3．Structure analyzingAsk students to read the text carefully and try to find out how many parts they can divide the text into and find out the main idea of each part.Dealing with any language problem if any(words or sentences students might not understand)to help the students to have a better understanding of the text.Listening，reading aloud and underliningAsk students to read the passage aloud to the tape and let them pay attention to the pronunciation of each word and the pauses within each sentence. Tell them to pick out all the useful expressions or collocations from the passage while reading and copy them to the notebook after class as homework.Collocations：come about，There is no doubt that...，subscribe to，due to，greenhouse effect，quantities of，tend to，be trapped in，go up，result in，on the one hand...on the other hand，be opposed to，build up，keep on.RetellingAsk students to talk about global warming in their own words. Give them some key words and expressions on the blackboard. Then let them try to retell the passage.Homework1．Learn the useful new words and expressions in this part by heart.2．Try to find some data about global warming on the Internet，and show your class in the next period and talk about them.Reflection after teaching________________________________________________________________________________________________________________________________________________教学参考About Global Warming(关于全球变暖)Global warming is the increase in the average temperature of Earth's near－surface air and oceans since the mid－20th century and its projected continuation. Global surface temperatureThe Intergovernmental Panel on Climate Change(IPCC)concludes that most of the observed temperature increase since the middle of the 20th century was very likely caused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fuel burning and deforestation. The IPCC also concludes that variations in natural phenomena such as solar radiation and volcanic eruptions had a small cooling effect after 1950.These basic conclusions have been endorsed by more than 40 scientific societies and academies of science，including all of the national academies of science of the major industrialized countries.Climate model projections summarized in the latest IPCC report indicate that the globalThe uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. Most studies focus on the period up to the year 2100.However，warming is expected to continue beyond 2100 even if emissions stop，because of the large heat capacity of the oceans and the long lifetime of carbon dioxide in the atmosphere.An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation，probably including expansion of subtropical deserts. Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers，permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events，species extinctions，and changes in agricultural yields. Warming and related changes will vary from region to region around the globe，though the nature of these regional variations is uncertain.Political and public debate continues regarding global warming，and what actions(if any)to take in response. The available options are mitigation to reduce further emissions；adaptation to reduce the damage caused by warming；and，more speculatively，geoengineering(地球工程)to reverse global warming. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions.。
【开学大礼包】高中英语 Unit 4 Global warming Period 6 Summi
Period 6 Summing Up，Learning Tip and Assessment整体设计教学内容分析This is the last teaching period of this unit，so the emphasis should be placed on going over and summarizing what has been learned in this unit.It includes the following parts：Summing Up，Learning Tip，Checking Yourself and some other consolidation exercises.Summing Up summarizes the whole unit from the aspects of topics and vocabulary and grammar.The teacher can first use this part to let students sum up what they have learned in this unit and then let them find out what they can't understand very well.Learning Tip gives students instructions on which kind of nouns begin with a capital letter.Let the students think about what they already know about the rules and what new information they will find.Checking Yourself on Page 68 in the Workbook aims at encouraging students to make a self －assessment after they finish learning this unit.It is very important to improve their learning.Of course，a testing assessment is also needed.In this period，the teacher can also provide more practice to consolidate what students have learned in this unit.三维目标设计Knowledge and skills1．To get students to master all the useful new words and expressions in this unit.2．To have students understand the new grammar item “the use of ‘it’(2)” better，and enable them to use the sentence patterns correctly.3．To develop the students' ability to use the important language points in this unit.Process and methodsDesign some additional exercises for students to do in order that they can learn to use and grasp all the contents.Emotion，attitude and value1．To encourage students to learn more about global warming and environmental protection.2．To inspire the students to think up more effective measures to prevent global warming.教学重、难点Using what they have learned in this unit to solve real problems.教学过程Revision1．Check the homework exercises.2．Dictate some useful new words and expressions in this unit.Lead－inAsk the students to turn to Page 32.Think about what they have learned in this unit and tick the boxes to see how well they have learned them.Summing upFive minutes for the students to summarize what they have learned in this unit by themselves. Then check and explain something where necessary.Suggested answers：Write down what you have learned about global warming：(Students' answers may vary.)The temperature of the earth rose about one degree Fahrenheitduring the 20th century. It is human activity that has caused this global warming. All scientists subscribe to the view that the increase in the earth's temperature is due to the burning of fossil fuels. Some byproducts of this process are called greenhouse gases，which trap heat and warm the earth. Without the greenhouse effect，the earth would be cooler than it is. But scientists don't agree with each other on the effects of global warming. Some think it will be a disaster，but some others think it's a good thing and we can do nothing to prevent the trend. By reading the second passage，we also know some easy and effective measures we can take to deal with global warming.From this unit you have also learned：Some useful words：tend，oppose，state，glance，quantity，range，tendency，circumstance，opposed，steady，widespread，average，consume，subscribe，advocate，refresh，graph，phenomenon，fuel，data，trend，catastrophe，flood，consequence，existence，commitment，pollution，growth，motor，can，microwave，educator，contribution，presentation，disagreement，random，mild，outer，electrical，casual，nuclear，perSome useful expressions：come about，subscribe to，quantities of，go up，result in，be opposed to，even if，keep on，on the whole，on behalf of，put up with，so long as，and so on，greenhouse effectNew grammar item：the use of “it”—how to use “it” for emphasis in a sentence.Functional items：how to express agreement and disagreement，blame and complaint.PracticeShow the exercises on the screen or give out exercise papers.Part 1Vocabulary1．Researchers c______ living conditions in London with those in other places.2．Their prices are low c______ to those in other shops.3．I don't think anybody m______ to her apart from herself.4．He prefers q______ to quality when food is concerned.5．The d______ we have collected are not enough to be convincing.6．Everything was in a s______ of disorder.7．What is the a______ rainfall for August in your country?8．Each i______ boy in the class has his own personalities.9．We have been having a few a______ in the committee lately.10．They were p______ in the history of music.11．As a c______ of being in hospital，Shelly decided that she wanted to become a nurse.12．A doctor has the t______ “Dr” in front of his name.13．The number of the children in the school has d______ by 500 this year.14．The cooker isn't working because of an e______ fault.15．The food was cold and the guests quarreled—the whole dinner was a c______.Part 2Useful phrases1．在20 世纪期间____________2．导致____________3．另一方面____________4．通过燃烧化石燃料____________5．大量的____________6．忍受污染____________7．有关系，有影响____________8．大体上，基本上____________9．高达5摄氏度____________10．发生____________Part 3Complete the following sentences according to the texts.1．An energy source is renewable when supplies of it never ______ ______.2．It is a rapid increase ______ ______ ______ ______ ______.3．There is ______ ______ that the earth is becoming warming but there is ______ ______ ______ whether it is ______ ______ ______has caused this global warming or whether it is ______ ______ ______ ______.4．______ the greenhouse effect，the earth ______ ______ about thirty－three degrees Celsius ______ ______ ______ ______.5．The ______ ______ of carbon dioxide ______ that more heat energy is trapped in the atmosphere ______ the ______ ______ ______ ______ ______.6．It was ______ ______ ______ Charles Keeling ______ made ______ ______ ______ the amount of carbon dioxide in the atmosphere from 1957 to 1997.7．They also believe ______ ______ the burning of more and more fossil fuels that is ______ ______ this increase in carbon dioxide.8．There are some very different ______ among scientists ______ ______ ______.9．Sometimes I feel that ______ can't have any ______ ______ ______ huge ______ problems.10．Finally and most ______，talk ______ your family and friends ______ global warming and tell them what you have learned.11．Remember—your ______ ______.Part 4Multiple choice1．Is it ______ to you that the government is having a hard time now?A．of much important B．of much consequenceC．of very importance D．of much consequent2．Something must be done to ______ the river from ______.A．stop；being polluted B．stop；pollutingC．prevent；pollution D．keep；polluted3．There ______ quantities of apples in the basket and there was ______ milk in the bucket.A．were；a number of B．was；quantities ofC．was；a good many D．were；a quantity of4．______ we get good weather it will be a successful holiday.Which is wrong?A．So long as B．Provided thatC．So long D．On condition that5．—Go for a picnic this weekend，OK?—______.I love getting close to nature.A．I don't think so B．I believe notC．I couldn't agree more D．I am afraid not6．—Now，where is my purse?—______！ We will be late for the picnic.A．Come on B．Don't worryC．Take your time D．Take it easy7．It was not until 1999 ______ regular radio broadcast began.A．while B．whichC．that D．since8．Can it be in the restaurant ______ we had dinner last Sunday ______ you left your wallet?A．where；where B．where；thatC．that；where D．that；that9．—What's the matter with you?—______ the window，my finger was cut unexpectedly.A．Cleaning B．To cleanC．While cleaning D．While I was cleaning10．The other day，my brother drove his car down the street at ______ I thought was a dangerous speed.A．as B．whichC．there D．whatSuggested answers：Part 1 Vocabulary1．compared pared 3.matters 4.quantity 5.data 6.state 7.average 8.individual 9.agreements10.phenomena11.consequence12.title13.decreased14.electrical 15.catastrophePart 2 Useful phrases1．during the 19th century 2.lead to 3.on the other hand 4.through the burning of fossil fuels/by burning fossil fuels 5.a great deal of/scores of 6.put up with the pollution 7．make a difference 8.on the whole 9.as much as five degrees Celsius(5 ℃)e about Part 3 Complete the following sentences according to the texts.1．run out pared to most natural changes 3.no doubt；fierce debate over；human activity that；just a natural phenomenon 4.Without；would be；cooler than it is 5.increased amount；means；causing；global temperature to go up 6.a scientist called；who；accurate measurements of 7.it is；resulting in 8.attitudes；towards this issue 9.individuals；effect on such；environmental 10.importantly；with；about 11.contribution countsPart 4 Multiple choice1～5 BADCC 6～10 ACBDDLearning tipAsk the students to turn to Page 32.Read through the passage and make sure they understand it.Encourage them to do as the passage tells because if they are doing so they will be teaching themselves a useful way of using English words.Assessment1．Checking yourself(on Page 68 in the Workbook)First get the students to think about these questions individually.Then they can discuss in groups sharing their experience.The teacher can join in and give them advice and suggestions where necessary.2．Testing assessmentMultiple choice1．______ with the size of the whole earth，the biggest ocean does not seem big at all.A．Compare B．When comparingC．Comparing D．When compared2．Please tell me how the accident______.I am still in the dark.A．came by B．came outC．came to D．came about3．The accident ______ the death of two passengers.A．resulted from B．resulted inC．resulted of D．resulted with4．It is in the west of China ______ there is no doubt ______it is going to rain tomorrow. A．where；whether B．that；thatC．that；whether D．where；that5．It was 1969______ the American astronauts succeeded in landing on the moon.A．that B．whenC．on which D．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．whether B．ifC．that D．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．range B．rangedC．range from D．ranges from10．______，we'll go camping.A．Weather permits B．If weather will permitC．Weather permitting D．Weather permitted11．______，we would have not finished the work on time.A．If you didn't help us B．Without your helpC．Without you D．With your help12．—I will not come here tomorrow.—______to me，because I don't care.A．It doesn't make any differenceB．It makes much differenceC．It doesn't make no differenceD．It makes a difference13．You can go out，______you promise to be back before 11 o'clock.A．as far as B．so far asC．when D．as/so long as14．—I apologize for not being able to join you for dinner.—______.We'll get together later.A．Go ahead B．Not to worryC．That's right D．Don't mention it15．Christmas is ______ special holiday when ______ whole family are supposed to get together. A．the；the B．a；aC．the；a D．a；theSuggested answers：1～5 DDBBB 6～10 CAACC 11～15 BADBDHomework1．Finish off the Workbook exercises.2．Review and summarize what you have learned in Unit 4.Reflection after teaching________________________________________________________________________ ________________________________________________________________________。
高中英语Unit 4 Global warming Reading
Unit 4 Global warmingPart One: Teaching Design (第一部分：教学设计)Period 1: A sample lesson plan for reading(THE EARTH IS BECOMING W ARMER—BUT DOES IT MATTER?)AimsTo look and list sources of energyTo read about global warmingProceduresI. Warming upWarming up by definingHello, everyone. Today we are going to read about global warming. But first let’s think about what moves the world around. Yes, it is energy. But what is energy?Renewable energy sources like wind power don't emit carbon dioxide.Energy is a fundamental quantity that every physical system possesses; it allows usto predict how much work the system could be made to do, or how much heat it canproduce or absorb. In the past, energy was discussed in terms of easily observableeffects it has on the properties of objects or changes in state of various systems.Basically, if something changes, some sort of energy was involved in that change.Warming up by observingEnergy is so important, but where does it come from?There are different forms of energy:▲Light energy 光能▲Heat energy 热能▲Sound energy 声能▲Chemical energy source 化学能源▲Nuclear energy 核能▲Internal energy内能▲Kinetic energy动能▲Potential energy势能能源类型定义实例一次能源直接来自自然界而未经加工转换的能源化石燃料、太阳能、核能、生物燃料、水能等二次能源由一次能源直接或间接转化而来的能源电能、煤气、汽油、沼气、氢能等可再生能源不随其本身的转化或被人类利用而减少的能源太阳能、生物能、水能、风能、地热能等非再生能源随其本身的转化或被人类利用而减少的能源化石燃料、核燃料等Energy is measured in joules (J). Energy can do work.When energy changes from one form to another, the amount of energy stays the same. Energycannot be made or d estroyed. This fact is called “conservation of energy〞. Matter can be madeinto energy through processes like nuclear fission and nuclear fusion.II. Pre-reading1.Questioning and answeringHave you ever seen a green house? What is it? What is it for? Li Hongju, could you tell the class in English whatyou know about a green house?A green house is built of glass to be used for growing plants. The air inside the greenhouse is warm because the glass lets in the sun and keeps it from running away. Sothe air inside is warm and is good for growing plants throughout the cold seasons. 2.Talking and sharingNow look at the word GREENHOUSE GASES. What does it mean?Greenhouse gases (GHG) are gaseous components of the atmosphere that contributeto the greenhouse effect. The major natural greenhouse gases are water vapor, whichcauses about 36-70% of the greenhouse effect on Earth (not including clouds); carbondioxide, which causes between 9-26%; and ozone, which causes between 3-7% (notethat 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 occuring 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.III. ReadingReading aloud to the recordingNow please listen and read aloud to the recording of the text THE EARTH ISBECOMING W ARMER—BUT DOES IT MATTER? Pay attention to the pronunciationof each word and the pauses within each sente nce. I will play the tape twice and you’ll read aloud twice, too.世界初级能源消耗能源石油煤可燃气水能核能百分点45 26 20 5 42. Reading and underliningNext you are to read and circle all the useful expressions or collocations in the passage. Copy them to your notebook after school as homework.3. Reading aloud and translatingNext we are going to read aloud the text and put it into Chinese. We may translate it word for word, sentence for sentence.4.Reading and transforming informationTo understand the main idea of the text, we are going to read it once again. Write down the key sentence of each paragraph at the same time.Key sentence of each paragraph:1. A debate over whether it is human activity that has caused the global warming or whether it is just a naturalphenomenon.2.Many scientists believe people have caused the increase in the earth’s temperature.3.The increased extra amount of carbon dioxide traps more heat energy causing the global temperature to goup.4.The levels of carbon dioxide have increased greatly over the last 100 to 150 years.5.There are some different attitudes towards the causes of this increase in carbon dioxide.6.Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius but it could be asmuch as 5 degrees Celsius.7.An increase of five degrees would be a catastrophe.8.Future warming would cause the sea level to rise by several meters.9.Some predict any warming will be mild with few bad environmental consequences.10.More carbon dioxide is a positive thing.11.No one knows what the effects of global warming will be.常规能源世界大量消耗的石油、天然气、煤和核能等称为常规能源新能源新能源是相对于常规能源而言的，泛指太阳能、风能、地热能、海洋能、潮汐能和生物质能等5.Understanding difficult language pointsAre there any sentences or words, difficult to you? Now discuss with your partner thedifficult points. You may put you questions to me.IV. Closing downClosing down by doing comprehending exercisesTo end the lesson you are to do the comprehending Ex. 1, 2 and 3 on page 27.Closing down by retelling the textTo end the period, l et’s try to retell the text with the help of the key sentences we have found just now.商品能源凡进入能源市场作为商品销售的如煤、石油、天然气和电等均为商品能源。
2017_2018学年高中英语专题Unit4Globalwarming1WarmingUpPre_r
e e e e out
9. ________________prep.每；每一
10. ________________n.资料；数据
11. ________________n.趋势；倾向；走向
12. ________________n.大灾难；浩劫
13. ________________n.洪水；水灾
14. ________________vt.反对；反抗；与(某人)较量
4. quantity n. 量；数量
☞Huge quantities of oil were shipped to Japan last year.
去年大量的石油被海运到日本。
☞As a result of destroying the forests，a large quantity of deserthas covered(cover) the land.
【归纳拓展】
be consumed with 被（某种情感）所折磨
consumern.消费者
consumptionn.消费(量)；消耗(量)
time-consumingadj.耗时的
汉译英
① 她把大部份时刻都花在念书上了。
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3. There is no doubt that 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，地球是在变暖（如表1），而地球变暖正是人类活动造成的，并非是一种无规律的自然现象。
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Period 2 Language Study整体设计教学内容分析The emphasis of this period will be placed on the important new words，phrases and sentence patterns in Warming Up，Pre－reading，Reading，Comprehending and Discovering useful words and expressions in Learning about Language. There are altogether 53 new words and phrases in these five parts.20 of them are marked with triangles，which shows that the students needn't learn them by heart. It is enough to recognize them when meeting them while reading the passage. The other 33 should all be remembered，among which the following words and expressions are even more important：tend，range，subscribe to，go up，widespread，state，glance，steady，tendency，keep on，on the whole，quantity of，be opposed to，come about，result in，even if. They are all very useful and important. So are the sentence patterns “...it is a rapid increase when compared to other natural changes.” and “There is no doubt that the earth is becoming warmer...” We ought to pay more attention to them.三维目标设计Knowledge and skills1．To get the students to learn to use the following important new words and phrases freely：tend，range，subscribe to，go up，widespread，state，glance，steady，tendency，keep on，on the whole，quantity of，oppose，come about，result in，even if.2．To get the students to understand and use the following important and useful sentence patterns：(1)．..it is a rapid increase when compared to other natural changes.(2)There is no doubt that the earth is becoming warmer...Process and methods1．To help the students to understand the meanings of the above useful new words and expressions in the context，and then give some explanations about them，and at last offer some exercises to make students master their usages.2．To ask the students to make up their own sentences by imitating the above sentence patterns.3．At the end of the class，make students do more exercises for consolidation. In doing so，they can learn，grasp and use these important language points well.Emotion，attitude and value1．To stimulate students' interest in learning English.2．To develop students' sense of cooperation and teamwork.教学重、难点1．Important new words and expressions：quantity of，oppose，come about，result in，even if.2．Important and useful sentence patterns：(1)．..it is a rapid increase when_compared_to other natural changes.(2)There_is_no_doubt_that the earth is becoming warmer...3．Some difficult and long sentences in the text.教学过程Revision1．Check the homework exercises.2．Ask some students to talk about global warming.Reading and findingGet students to read through Warming Up，Pre－reading，Reading，Comprehending and Discovering useful words and expressions in Learning about Language to underline all the new words and useful expressions or collocations in these parts. Read them aloud and copy them down in the exercise book.Practice for useful words and expressions1．Turn to Page 28.Go through the exercises in Discovering useful words and expressions with students and make sure they know what to do.2．Give them several minutes to finish the exercises. They first do them individually，and then discuss and check them with their partners.3．Check the answers with the whole class and explain the problems they meet where necessary.4Vocabulary studyⅠ.简单知识扫描1．tend(P26)【原句再现】It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.这意味着更多的热量被困在大气层中，从而引起全球温度上升。
【观察探究】(1)We sometimes tend to think that the ocean bottom is made up of smooth plains.我们往往误以为海底由平坦的平原构成。
(2)People under stress tend to express their full range of potential.处于压力下的人容易发挥自己全部的潜力。
(3)Doctors and nurses tended(to)the injured.医生和护士护理受伤的人。
【归纳总结】tend vi.& vt.意思是“往往会，趋于，倾向；照料，护理”。
作“照料，护理”讲时，常与介词to 搭配。
【即景活用】(1)救护车上的救护人员在照料受伤的工人。
Ambulance crews ______ the injured workers.(2)男孩往往比女孩个子高。
Boys ______ taller than girls.Suggested answers：(1)were tending(to) (2)tend to be2．range(P27)【原句再现】...it will encourage a greater range of animals—all of which will make life for human beings better.这将促进动物的生长——所有这一切都会使人类的生活变得更好。
【观察探究】(1)Maybe the question is beyond the range of human understanding.或许这个问题超越了人类理解的范围。
(2)You can see a range of mountains standing on the top of the tower.站在塔顶你可以看到一系列山脉。
(3)The temperature ranges between ten and thirty degrees.气温在十至三十度之间。
(4)I ranged the books on the shelf by/according to size.我把书依大小顺序排在书架上。
【归纳总结】range n. 意思是“范围；射程；山脉；行列”； v. 意思是“变化；排列；归类于”，常用于range from...to...结构，意为“从……到……范围内变化”。