(完整版)英語(yǔ)泛讀教程-unit-3-recycling課件

1、Unit Three RecyclingNavigation GuideI. Related Information 1.1 Background Information 1.2 Preview QsII. Text Comprehension 2.1 Comprehension Qs 2.2 Text AnalysisIII. Difficult Points 3.1 Key Words 3.2 Key PhrasesIV. Home Reading 4.1 Post-reading Qs 4.2 Difficult sentencesObjectives: To know some ser

2、ious problems threatening the survival of human beings.To be aware of the issues concerning environmental protection.To understand the ways to solve the environmental problemsUnwanted or useless materials.The process of collecting materials that are considered trash and remanufacturing them into new

3、 products that can be resold and used again. conserves natural resourcesSaves energyProduces less greenhousePrevents the destruction of natural habitatsDecreases soil erosion associated with mining and loggingLets see!GlassMetalPaperPlasticTiresMost widely used products in the U.S.Takes up about 10%

4、 of our total stream and it is composed mainly of the non-renewable resource petroleum.Recycling old plastic products uses 20%-40% less energy than manufacturing it from new.7 different types of plasticPET or PETE(Polyethylene Terephthalate)HDPE(high-density polyethylene)Soda and water bottlesMouthw

5、ash bottlesPlastic wrapPeanut better and other food jarsSalad dressing bottlesMilk containersTrash bagsYogurt containersLiquid laundry detergent containersShampoo bottlesJuice containersRecycled Plastic: Reduces greenhouse gas emission/ can be made into plastic lumber, which is durableAmericans use

6、over 100million steel cans and over 200 million aluminum beverage cans everyday.Mainly aluminum and steelProducts uses 95% less energy than manufacturing it from new materials.Aluminum is an ore, which is a mineral.Less land and Water pollutionsThe process of manufacturing old paper products and tur

7、ning them into new, reusable paper products. Recycling old paper products uses 60% less energy than manufacturing it from new materials.Most recognized recycled paper products After recycled, can createNewspaperShredded paperPhonebooksCardboardMagazinesComputer paperEgg cartonsPaper towelTissueToile

8、t paperNewspaperPhonebooksThe process of taking old glass products and turning them into new, reusable glass products. Recycling old glass uses 40% less energy than manufacturing it from new.TYPES of Glass Products can be recycledBeverage containersFood JarsBenefits of recycling of Recycling glassCa

9、n be recycled over again and never lose its quality or quantityCreates 20%less air pollutionReduces water pollution by 50%Saves energy to light a 100-watt light bulbReduces that amount of landfill space that is usedI. Related Information1) EnvironmentThe physical surroundings of an organism or organ

10、isms, including biological, physical, and chemical factors. In the context of human ecology, it also includes social and cultural surroundings. Planning, caring for, and conservation of the human environment, both built and natural, became of increasing concern in the years following World WarRecycl

11、ing involves processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution (from incineration) and water pollution (from landfilling) by reducing the need for conventional waste d

12、isposal, and lower greenhouse gas emissions as compared to virgin production.12 Recycling is a key component of modern waste reduction and is the third component of the Reduce, Reuse, Recycle waste hierarchy.Recyclable materials include many kinds of glass, paper, metal, plastic, textiles, and elect

13、ronics. Although similar in effect, the composting or other reuse of biodegradable waste such as food or garden waste is not typically considered recycling.2 Materials to be recycled are either brought to a collection center or picked up from the curbside, then sorted, cleaned, and reprocessed into

14、new materials bound for manufacturing.Earths pressWhat should we do ?Recycling In ChinaWhat can we do with regard to recycling節(jié)約用水拒絕使用塑料袋 將空調(diào)的溫度下調(diào)1度 盡量使用可再生能源購(gòu)買當(dāng)?shù)氐挠袡C(jī)食品 關(guān)掉多余的燈 送綠色禮物紙張兩面用 手機(jī)以舊換新 減少?gòu)U物，專家建議，盡量購(gòu)買散裝貨，買散裝水果和蔬菜，不買那些使用多層塑料紙包裝的物品，購(gòu)買那些容易降解的物品Well, recycling is a simple way that you, as a consu

15、mer, can help out the environment, create a profitable market for recycled goods and help preserve natural resources from being depleted(耗盡的資源deplete的過(guò)去分詞 ). So lets get involved!Lets join hands to protect our home-EARTH1.Future sources of power Fossil fuels, chiefly coal, oil and natural gas, now s

16、upply most of our energy. Only a small amount comes from renewable sources like solar or wind power, which do not release gases that trap heat in the atmosphere. If we could get more of our energy from renewable sources, we could reduce the amount of fossil fuels we burn. Renewable sources could pro

17、vide 40 percent of the energy needed in the world by the year 2050. Use of renewable energy can help both to slow global warming and to reduce air pollution.2. Energy efficiency An energy-efficient light bulb or appliance does the same job with less energy. The saved energy can be used elsewhere, li

18、ke any other source of power. 3. What businesses can do to save energy Invest in energy-efficient fluorescent lighting.Build or remodel offices using energy-efficient materials, proper insulation and solar energy for heating and lighting.Set up ride-sharing systems for employees who commute to work.

19、Plant trees to offset the companys greenhouse gas emissions.Invest in energy-efficient manufacturing processes and equipment. Use recycled materials.Establish recycling programs in the workplace and use recycled paper products.4. Nuclear Power in the World Today The first commercial nuclear power st

20、ations started operation in the 1950s. There are now some 440 commercial nuclear reactors in 31 countries, with over 350,000 MW of total capacity. They supply 16% of the worlds electricity, as base-load power, and their efficiency is increasing. 56 countries operate a total of 284 research reactors.

21、 Canada is the worlds leading supplier of uranium. language points 1. Curbside recycling collection programs reach the majority of the American population. 美國(guó)大多數(shù)人口參與了路邊回收項(xiàng)目。 3. Is recycling worth all the effort? Is profitability the only bottom line? 利益是唯一的底線嗎？ 4. current profitability 現(xiàn)行利益， 當(dāng)前利益 Ma

22、rkets for collected recyclables go up and down. 回收市場(chǎng)不穩(wěn)定。6. sustainability 可持續(xù)性 7. mass production 大批量生產(chǎn) 8. economic necessity 經(jīng)濟(jì)的必需 9. Earth Day 地球日 10. The U.S. Environmental Protection Agency 美國(guó)環(huán)保署 11. Other observers suggested a broader view of the costs and benefits of recycling. 一些觀察家建議用長(zhǎng)遠(yuǎn)的眼光看待

23、回收利用的成本與收益。 12. The perspective focuses solely on how an individual recycling program impacts a communitys total waste management costs, compared to the alternative of sending everything to a landfill or incinerator. 13. Recycling is not a fad . 14. With this abundance came an increasing tendency to

24、 discard and replace products after their initial use, rather that to reuse or recycle them. 15. Government agencies at all levels have worked to ensure recyclings viability . practicability 可行性 Discussing the following topics. 1.What is the greenhouse effect? Can you give examples of the greenhouse

25、 effect in the place you live? 2.Discuss how air pollution and water pollution have affected our daily life. 3. What can we do to improve our environment? 1. Gases in the atmosphere (such as water vapor, carbon dioxide, methane, and chlorofluorocarbons, or CFCs) absorb infra-red radiation from the E

26、arths surface and reflect it back on to the planet. But the greenhouse gases send some of this heat back towards the Earths surface and help to keep it warm.Carbon dioxide is released because of the deforestation and burning of vast quantities of such fossil fuels as coal, gas, and oil. And other gr

27、eenhouse gases come from the use of car, chemical fertilizers, refrigerators and freezers.2. Air pollution can damage peoples lungs and the lead from some car exhaust fumes can cause acid rain which is very harmful to the living beings as well as the buildings.The polluted water in rivers and stream

28、s can kill fish, other water animals and plants. It can kill seabirds, shellfish and other wildlife when it flows into the sea. The water from the power-stations for cooling may not only kill fish and other water animals but also prevent them from breeding.3. To improve our environment, we should pr

29、oduce less of gases to slow the greenhouse effect,use less fuels like petrol, oil, natural gas and coal, reduce the use of CFCs, develop more efficient heating systems and engines.Home-reading2.2 Text Analysis Part One The Greenhouse EffectDivisionParagraphMain IdeaPart IP1Part IIP2-p7Part IIIP8-p11

30、Part IVP12-p13Part VP14-p16Part VIP17Part One The Greenhouse EffectComprehension Qs What is the greenhouse effect? Where do greenhouse gases come from?What are the solution to the greenhouse effect?Part Two Air Pollution and Acid RainHow is the air pollution caused?How does acid rain destroy our env

31、ironment?Are there any practical ways to prevent the acid rain? What are they? How do you think of the effect?Part Three The Ozone Hole How does the ozone layer protect human beings?What has been destroying the ozone layer?Where is more dangerous at certain time of a year?Part Four Pollution of Rive

32、rs, lakes and the SeaHow are the rivers polluted directly?What will happen to the sea animals and other wild life?Why is the warm water more dangerous than the cool water?1. The sun is the most important source of energy that the earth has.(太陽(yáng)是地球最重要的能量之源。)注意在定語(yǔ)從句中，當(dāng)先行項(xiàng)帶有最高級(jí)修飾語(yǔ)時(shí)，其后的關(guān)系代詞通常用that。e.g. N

33、ewton was one of the greatest men that ever lived.Hes the cleverest man that I have ever met.此外，在以下情況中， 定語(yǔ)從句的關(guān)系代詞一般也用that。 （1）當(dāng)先行項(xiàng)帶有only， all， any 等限定詞時(shí)。e.g. You are the only person that can help me.Any boy that wants to succeed must work hard.Ask Mr. Green, or any other person that is likely to know. （2）當(dāng)先行項(xiàng)為all或其他指物的不定代詞如anything， something， nothing，且關(guān)系代詞在定語(yǔ)從句中做主語(yǔ)時(shí)。e.g. All that glitters is not gold.This monument is all that remains of the ancient city. 2. It was