新視野視聽說(shuō)第三冊(cè)Unit Our Globe is in DangerPPT學(xué)習(xí)教案

1、會(huì)計(jì)學(xué)1新視野視聽說(shuō)第三冊(cè)新視野視聽說(shuō)第三冊(cè)Unit Our Globe is in DangerWatch a video clip. Work in groups to discuss the following questions.第1頁(yè)/共52頁(yè)1. What do you think may account for the natural disaster in the video clip?2. What do you think might be the causes of what was happening in the video clip?第2頁(yè)/共52頁(yè)Work in

2、pairs and identify the extreme weather associated with the following pictures. Then share what you know about the Extreme Weather with your partner. lightening and thunderstormshailtornadoesflash floodshurricaneswinter storms第3頁(yè)/共52頁(yè)Work in groups to discuss the following questions.1. Have you witne

3、ssed any changes of the environment in your hometown? 2. What do you think is the relationship between the climate and environment? 3. Do you know some other climate disasters caused by the pollution of environment? 第4頁(yè)/共52頁(yè)microscope n. 顯微鏡(an optical instrument that produces magnified images of sm

4、all objects)El Nio 厄爾尼諾現(xiàn)象drought n. 干旱(a long period of dry weather when there is little or no rain) e.g. Fresh vegetables were scarce during the drought.greenhouse effect 溫室效應(yīng)(the gradual warming of the air surrounding the Earth as a result of heat being trapped by pollution) e.g. Carbon dioxide em

5、ission contributes to greenhouse effect. Basic Listening Practice第5頁(yè)/共52頁(yè)harness v. 利用（或控制）以產(chǎn)生能量等(control and use the natural force or power of something) e.g. The problem was how to harness these forces.hazard n. 危險(xiǎn)(danger; risk) e.g. He had put his own life in hazard.CFC 含氟氯烴(a gas used in fridges

6、 and aerosol cans, harmful to the ozone layer)aerosol n. 噴霧器(a container in which liquids are kept under pressure and forced out in spray)Basic Listening Practice第6頁(yè)/共52頁(yè)Questions and key1. Q: Which of the following is true according to the dialog? B) Even scientists cannot understand El Nio.2. Q: H

7、ow do the man and the woman view the environment? D) Both the man and the woman think positively about it.3. Q: What have the Chinese people been encouraged to do? A) To grow trees.4. Q: What are government organizations helping people to do? A) To treat old electrical appliances safely.5. Q: What d

8、oes the man mean? C) The woman should not use an aerosol spray.Basic Listening Practice第7頁(yè)/共52頁(yè) We should have proper respect for nature!Martha 瑪莎人名Ed 艾德人名litter v. 亂扔垃圾(leave rubbish in public places) e.g. Dont litter the paper over the floor.trash n. 垃圾(something worth little or nothing) e.g. Plea

9、se take out the trash.Listening in第8頁(yè)/共52頁(yè)While being interviewed by Martha, Ed said more people in his culture respect (1)_ now than ever before. When asked about the most serious (2)_ in the world today, he mentioned the damaged ozone layer and the (3)_ in big cities.Ed learned about environmental

10、 problems at school. A lot of clubs and some TV programs (4)_ environmental safety. He believes that students should learn more about the environment at school. Then they can be more (5)_ all the problems and prevent more problems (6)_.When asked about a new (7)_ he would like to create to help the

11、environment, he said that when people (8)_ their cigarette butts, they have to throw them into the garbage bin. They should be (9)_ if they throw them on the floor or ground.Personally, Ed is so against littering that he never litters. He always throws his (10)_ into the garbage bin.Keynature enviro

12、nmental problempollutionpromoteaware offrom occurringlawthrow awayfinedtrashListening in第9頁(yè)/共52頁(yè)River Pollutiondiscolor v. 使變色(cause something to change color) e.g. This material may discolor if exposed to direct sunlight. smelly adj. 臭的(having a bad smell; stinking) e.g. The toilets in that restaur

13、ant were horribly smelly and dirty.fertilizer n. 肥料(a substance that is put on the soil to make crops grow) e.g. Get some more fertilizer for the garden.drain v. 排水(flow away) e.g. They are digging trenches to drain the water away. Listening in第10頁(yè)/共52頁(yè)River Pollutionconcentration n. 濃度; 含量(the amou

14、nt of a substance in a liquid) e.g. Although all plants normally contain fluorine, the concentration varies greatly. nitrate n. 硝酸鹽; 硝酸鹽類化肥phosphate n. 磷酸鹽; 磷肥algae n.（復(fù)數(shù)）水藻bacteria n.（復(fù)數(shù)）細(xì)菌(germs)pollutant n. 污染物(a polluting substance)cyanide n. 氰化物lead n. 鉛Listening in第11頁(yè)/共52頁(yè)River Pollutionmercu

15、ry n. 汞, 水銀toxic adj. 有毒的(poisonous) e.g. The factory had accidentally released a quantity of toxic waste into the sea.film n. 薄膜; 薄薄一層(a thin layer) e.g. This film of water is about five miles thick at its deepest part.dissolve v. 溶解(mix with a liquid and become part of it) e.g. Both salt and sugar

16、 dissolve easily in water. Listening in第12頁(yè)/共52頁(yè)Questions and key1. Q: What is the passage mainly about? D) The causes of river pollution.2. Q: Why does the river water turn green? A) Because nitrate and phosphate in the water increase.3. Q: What harm does industrial waste cause? B) Poisoning.4. Q:

17、Which of the following is true of oil pollution? C) It prevents oxygen from entering the water.5. Q: What harm can warm water in a river bring? D) Lack of oxygen.Listening in第13頁(yè)/共52頁(yè)P(yáng)ollutionsWhen households and factories dump sewerage and harmful substances into rivers and lakes, water pollution c

18、an be serious. Air pollution may worsen as the economy develops. If the smoke from the factory chimneys does not meet environmental standards, it pollutes the air. Also, the increasing number of cars brings further deterioration to the quality of the air. The cigarettes people smoke also contribute

19、to the pollution.Listening in第14頁(yè)/共52頁(yè)hydroelectric adj. 水力發(fā)電的(producing electricity by waterpower)e.g. Plans are being drawn up to build a hydroelectric station here.Curbing carbon emissionsListening in第15頁(yè)/共52頁(yè)help curb corruption.Curbing carbon emissions第16頁(yè)/共52頁(yè)Questions and keyListening in第17頁(yè)/

20、共52頁(yè)Environment calendarFebruary 2 World Wetland Day世界濕地日March 21World Forestry Day世界森林日March 22World Water Day世界水日March 23World Meteorological Day世界氣象日April 7World Health Day世界健康日April 18World Heritage Day世界遺產(chǎn)日April 22Earth Day地球日May 31Anti Tobacco Day禁煙日(To be continued)Listening in第18頁(yè)/共52頁(yè)Enviro

21、nment calendarJune 5World Environment Day世界環(huán)境日J(rèn)uly 11World Population Day世界人口日September 16World Ozone Day世界臭氧日September 28Green Consumer Day綠色消費(fèi)者日October 3World Habitat Day世界居住日October 1-7World Wildlife Week世界野生動(dòng)植物周October 4World Animal Welfare Day世界動(dòng)物福利日October 13International Day for Natural Disas

22、ter Reduction國(guó)際減少自然災(zāi)害日(Continued)Listening in第19頁(yè)/共52頁(yè)humid adj. 潮濕的(moist; damp) e.g. In the east, the air is humid in summer. panel n. 板(a flat rectangular piece of glass, wood, metal, etc.)trap v. 擋住(prevent something such as gas or water from getting away) e.g. This is called the greenhouse effe

23、ct, and the gases that trap the heat are greenhouse gases.carbon monoxide n. 一氧化碳Speaking Out第20頁(yè)/共52頁(yè)ScriptJohn: How is your grandma (1)_ _?Nora: Over the last few years, granny has been complaining that (2)_ _. She believes the weather has changed.John: What she means is the climates long-term con

24、ditions. Weather refers only to day-to-day conditions.Nora: Yeah. She says summer is hotter, and winter wetter. But I tried to comfort her, saying, “Its all in your mind, granny.”John: Shes right, you know. The greenhouse effect (3)_.(To be continued) getting along during this unusually hot weather

25、the hot, humid weather is killing herdoes bring global warming and rainSpeaking Out第21頁(yè)/共52頁(yè)Script(Continued)Nora: How can I explain global warming and greenhouse gases to a 97-year-old granny?John: Tell her the Earth now is like a real greenhouse made of glass panels that let in light and trap heat

26、.Nora: Think shell want to know that carbon monoxide from Earth makes greenhouse gases?John: (4)_ _.Nora: Ill tell granny (5)_ _, or to use aerosol spray on her hair.John: OK. Joke about it, but it wont be so funny when (6)_. Everybody should know what causes global warming. Otherwise we wont stop i

27、t not to burn any more wood or coalthe polar ice caps melt and oceans riseSpeaking Out第22頁(yè)/共52頁(yè)Global warming Global warming is the increase in the average temperature of the Earths near-surface air and oceans in recent decades and its projected continuation. The term “global warming” is a specific

28、example of the broader term “climate change”, which can also refer to global cooling. In common usage the term refers to recent warming and implies a human influence.Speaking Out第23頁(yè)/共52頁(yè)Rainforests will soon be only a memory.donation n. 捐贈(zèng)(something given to a person or an organization in order to

29、help them) e.g. Ill be sending them a donation in appreciation of their help. dense adj. 稠密的; 濃密的(with a lot of things that are closely together) e.g. The city has a dense manufacturing population. vegetation n. 植物(plants of an area or a region) e.g. The sparse vegetation will only feed a small popu

30、lation of animals.Alaska 阿拉斯加州（美國(guó)州名）logger n. 伐木者(a person who cuts trees)Speaking Out第24頁(yè)/共52頁(yè)Script(To be continued)asking for donations to save the rainforests They need hot, tropical climates heavy rainfall leads to dense vegetationSpeaking Out第25頁(yè)/共52頁(yè)Script plant and animal species exist only

31、inrainforests are in danger of destruction byfind a way to save themSpeaking Out第26頁(yè)/共52頁(yè)Rainforests Rainforests are forests characterized by high rainfall, with definitions based on a minimum normal annual rainfall of 1750-2000 mm (68-78 inches). The monsoon trough, alternatively known as the inter

32、tropical convergence zone, plays a significant role in creating the climatic conditions necessary for the Earths tropical rainforests. Around 40% to 75% of all biotic species are indigenous to the rainforests. It has been estimated that there may be many millions of species of plants, insects and mi

33、croorganisms still undiscovered in tropical rainforests. Tropical rainforests have been called the “jewels of the Earth” and the “worlds largest pharmacy”, because over one quarter of natural medicines have been discovered there. Rainforests are also responsible for 28% of the worlds oxygen turnover

34、, sometimes misnamed oxygen production, processing it through photosynthesis from carbon dioxide and consuming it through respiration.Speaking Out第27頁(yè)/共52頁(yè)What a terrible sandstorm!Mongolia n. 蒙古國(guó)airborne adj. 空中傳播的(carried through the air) e.g. Also, it helps to prevent dust and other airborne cont

35、aminates from flowing into the room.afforestation n. 植樹造林(the act of planting trees in order to make a forest) e.g. We have decided to transform the mountains by afforestation. Speaking Out第28頁(yè)/共52頁(yè)Script(To be continued) a big sandstorm hit our cityThe air was full of dirt and sand and dust comes a

36、fter a long period of droughtSpeaking Out第29頁(yè)/共52頁(yè)Script(To be continued)the soil can be lifted upSpeaking Out第30頁(yè)/共52頁(yè)Scriptplant more trees and grass launching a new forestation program in a bid to address the environmental problemSpeaking Out第31頁(yè)/共52頁(yè)Sandstorm A dust storm or sandstorm is a meteo

37、rological phenomenon common in arid and semi-arid regions. Dust storms arise when a gust front or other strong wind blows loose sand and dirt from a dry surface. Particles are transported by saltation and suspension, a process that moves soil from one place and deposits it in another. The Sahara and

38、 dry lands around the Arabian peninsula are the main terrestrial sources of airborne dust, with some contributions from Iran, Pakistan and India into the Arabian Sea, and Chinas significant storms deposit dust in the Pacific.(To be continued)Speaking Out第32頁(yè)/共52頁(yè)(Continued) It has been argued that r

39、ecently, poor management of the Earths dry lands, such as neglecting the fallow system, are increasing dust storms from desert margins and changing both the local and global climate, and also impacting local economies. The term sandstorm is used most often in the context of desert sandstorms, especi

40、ally in the Sahara, or places where sand is a more prevalent soil type than dirt or rock, when, in addition to fine particles obscuring visibility, a considerable amount of larger sand particles are blown closer to the surface. The term dust storm is more likely to be used when finer particles are b

41、lown long distances, especially when the dust storm affects urban areas.Speaking Out第33頁(yè)/共52頁(yè)Watch a video clip. Work in groups to discuss the following questions.1. What is the video clip about?2. What might happen if all the ice melted?3. What might be the causes for the problem?Speaking Out第34頁(yè)/共

42、52頁(yè)inspirational adj. 有抱負(fù)的 (with aspiration or ambition) e.g. It is, in my opinion, one of the most inspirational mathematics books Ive ever read. fluffy adj. 空洞的 (empty, meaningless) e.g. There is an iron will underlying that soft and fluffy facade.emission n. 排放物 (a gas or other substance that is

43、sent into the air) e.g. One set of provisions tightens emission standards. Lets Talk第35頁(yè)/共52頁(yè)scenario n. 情景 (a situation that could possibly happen) e.g. The more likely scenario is that the president will resign and an election will be held. hollow adj. 空的 (having a hole or empty space inside) e.g.

44、 The boys scraped out a hollow place for planting trees.shell n. 殼 (the hard outer covering)channel v. 為引資; 引導(dǎo) (control or direct money, energy, etc. toward a particular purpose) e.g. Channel all your efforts into this one project, and you will succeed.Lets Talk第36頁(yè)/共52頁(yè)Script and keyMan 1: Well, it

45、s inspirational language which is nice and lovely and fluffy, but(1)_ _, and so its really hard to take to the bank. I mean, peoples lives are on the line in the developing world where we are seeing the impacts felt first and foremost. And obviously (2)_ _ _. (3)_ _ and thats a big problem. On-scree

46、n text: Wind Farm This is a great photo op for all the world leaders, but if (4)_ _, it really doesnt mean much at the end of the day.?(to be continued) bdoesnt really actually commit anyone to doing anything athe atmosphere simply cant take the kind of emissions weve been seeing in the business-as-

47、usual scenario and theres no real commitment to change that hTheres no real commitment to put serious money on the table dits not backed by actionLets Talk第37頁(yè)/共52頁(yè)Script and key(Continued)Man 2: Whats in there is very disappointing. (5)_ _. (6)_ that will need to be filled in, and it has some numbe

48、rs, it talks about trying to avoid two degrees. Thats the same language that the G8 used last July. But (7)_ as yet that would guarantee that were actually on the, on track to get there. And the financing commitments there is a mention of a 100- billion-dollar figure and the attempt to raise or mobi

49、lise that level of resources, but (8)_ _ _, as yet. gIt does not constitute a a dealeIts a hollow shellcit lacks anything on emissions cuts fTheres no guarantee that there will be new money, that the money will be real, that theres actually a commitment to get there, or that it will be channeled in

50、new waysLets Talk第38頁(yè)/共52頁(yè) On July 1, 2006, Qinghai-Tibet Railway was put into use, which might lead to the flooding-in of numerous tourists. Peoples opinions of the railways opening differ. Some say it will greatly promote the tourism and consequently economy in Tibet. However, some show great conc

51、ern of it. They think Tibet is the last piece of holy land in peoples mind. But the opening of the railway will disturb the tranquility and do great harm to the ecosystem in Tibet. Whats your opinion on the Qinghai-Tibet Railway? Do you think it will bring bliss or disaster to people and environment

52、 in Tibet?Lets Talk第39頁(yè)/共52頁(yè)ListeningThe environment and the developmentsummit n. 峰會(huì)(a meeting or set of meetings of the leaders of several governments) e.g. The Earth summit is not just about problems. sustainable adj. 可持續(xù)的(able to continue without causing damage to the environment ) e.g. Put peopl

53、e first and aim at comprehensive, coordinated and sustainable development.Further Listening and Speaking第40頁(yè)/共52頁(yè)ListeningThe environment and the developmentoption n. 選擇(choice) e.g. The option for peace should never be closed off. instill v. 注入; 灌輸(make someone think, behave or feel in a particular

54、 way) e.g. We must instill a sense of duty in our children.log v. 伐木(cut down trees) e.g. They log for a living.the upper reach（河流的）上游(the upper section)Further Listening and Speaking第41頁(yè)/共52頁(yè)KeyEnvironmentalproblemsair pollution, (1)_, desertification, overfishing, destruction of natural habitats,

55、acid rain, (2)_ of wild animals and plants, etc.Central problemthe contradiction between (3)_ and the environmentA new ideasustainable development; it means:Todays economic growth should not wipe out the (4)_ and options for future generations.Planning and development should ensure not only economic

56、 growth, but also (5)_ and environmental health.Some economic behavior must be (6)_ or controlled.(To be continued)water pollutionoverconsumptioneconomic growthresourcessocial advancementrestrictedFurther Listening and Speaking第42頁(yè)/共52頁(yè)KeyWhat China could doInstill principles of sustainable developm

57、ent into (7)_, resource management and (8)_.What China has doneChina has already taken some (9)_ to reduce damage to the environment, e.g., following the huge floods of 1998, the government banned logging in the upper reaches of the Yangtze River.The aima(n) (10)_ between economic growth and the env

58、ironment(Continued)government planningeconomic policyremarkable steps balanceFurther Listening and Speaking第43頁(yè)/共52頁(yè)Further Listening and Speaking第44頁(yè)/共52頁(yè)Questions and keyFurther Listening and Speaking第45頁(yè)/共52頁(yè)Mountain regions face a number of dangers.inhabit v. 居住(live in a particular place) e.g.

59、We should treasure the planet Earth we inhabit.graze v. 吃草(eat grass) e.g. The sheep usually graze in the grass land.Andes 安第斯山脈（南美洲西部）conservation n. 保護(hù)(protection of the natural environment) e.g. The conservation of tropical forests is of crucial importance.vulnerable adj. 易受傷害的, 脆弱的(that can be e

60、asily harmed) e.g. He volunteered to protect her as she looked so vulnerable.Nepal 尼泊爾（南亞國(guó)家）drift v. 漂泊(move aimlessly) e.g. Do not picture yourself as anything, and you will drift like an abandoned ship at sea.Further Listening and Speaking第46頁(yè)/共52頁(yè)Script and keyMountain people around the world are