Ourglobeisindanger.ppt
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1、,新视野大学英语,新视野大学英语,新视野大学英语,New Horizon College English,New Horizon College English,视听说教程,视听说教程,视听说教程,Unit 2 Our globe is in danger,Lecturer: Victoria Chen,viewing, listening& speaking,Discussing environmental problems,Resuming serious talks,Ask in retort,Learning Objectives,Contents,1 Lead-in,2 Basic
2、listening practice,3 Listening in,4 Speaking out,5 Lets talk,6 Homework,Watch a video clip.Then work in groups and discuss the following question.,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 co
3、ntinuation. The term “global warming” is a specific 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.,Have you witnessed any changes of the environment in your hometown? What do you t
4、hink is the relationship between the carbon dioxide and human being? Do you know some other climate disasters caused by the pollution of environment?,A: Work in pairs and identify the Extreme Weather associated with the following pictures. Then focus on one you are interested in and share with your
5、partner about your experience.,Brainstorming,Lightening and thunder storms,Hail,Tornadoes,Flash floods,Hurricanes,Winter Storms,Book3-Unit 7,Related information,Brainstorming,B: Match the English words in Column A with their Chinese version in Column B.,Column B 开发,开采 采伐森林 灭绝 臭氧 干旱 紫外线的 乱扔 化肥,Column
6、 A fertilizer litter ozone ultraviolet extinct exploitation deforestation drought,Book3-Unit 7,Oral activity,Related information,1,2,3,4,5,6,Acting It Out,Students A and B have different opinions on whether economic growth or environmental protection should receive priority in China. Each will give
7、a few reasons.,Reference ,Book3-Unit 7,DEBATE,Acting It Out,Reference,Book3-Unit 7,microscope n. 显微镜(an optical instrument that produces magnified images of small objects) El Nio 厄尔尼诺现象 drought n. 干旱(a long period of dry weather when there is little or no rain) e.g.Fresh vegetables were scarce durin
8、g the drought. greenhouse effect 温室效应(the gradual warming of the air surrounding the Earth as a result of heat being trapped by pollution) e.g. Carbon dioxide emission contributes to greenhouse effect.,harness v. 利用(或控制)以产生能量等(control and use the natural force or power of something) e.g.The problem
9、was how to harness these forces. hazard n. 危险(danger; risk) e.g. He had put his own life in hazard. CFC 含氟氯烃(a gas used in fridges and aerosol cans, harmful to the ozone layer) aerosol n. 喷雾器(a container in which liquids are kept under pressure and forced out in spray),Questions and key Q: Which of
10、the following is true according to the dialog? B) Even scientists cannot understand El Nio. Q: How do the man and the woman view the environment? D) Both the man and the woman think positively about it. Q: What have the Chinese people been encouraged to do? A) To grow trees. Q: What are government o
11、rganizations helping people to do? A) To treat old electrical appliances safely. Q: What does the man mean? C) The woman should not use an aerosol spray.,1.,2.,3.,4.,5.,Create a dialog with as many listed words and expressions as possible. Change the form when necessary. Role-play the dialog.,Role-p
12、lay,Role-play,We should have proper respect for nature!,Martha 玛莎人名 Ed 艾德人名 litter v. 乱扔垃圾(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. Please take out the trash.,While being interviewed by Martha, Ed said more people
13、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 problems at school. A lot of clubs and some TV programs (4)_ environmental safety. He believes
14、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 environment, he said that when people (8)_ their cigarette butts, they have to throw them into
15、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.,Key,nature,environmental problem,pollution,promote,aware of,from occurring,law,throw away,fined,trash,What we
16、 can do to protect our environment?,Start by touring our school to learn about potential environmental problems and try to find solutions to them. And then make a report on the hidden environmental problems on campus and what we can do to protect our environment.,River Pollution,concentration n. 浓度;
17、 含量(the amount of a substance in a liquid) e.g.Although all plants normally contain fluorine, the concentration varies greatly. nitrate n. 硝酸盐; 硝酸盐类化肥 phosphate n. 磷酸盐; 磷肥 algae n.(复数)水藻 bacteria n.(复数)细菌(germs) pollutant n. 污染物(a polluting substance) cyanide n. 氰化物 lead n. 铅,River Pollution,mercury
18、 n. 汞, 水银 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; 薄薄一层(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
19、 dissolve easily in water.,Questions and key 1. 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: Which of the foll
20、owing 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.,1.,2.,3.,4.,5.,Pollutions,When households and factories dump sewerage and harmful substances into rivers and lakes, water pollution can be serious. Air p
21、ollution 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 to the pollution.,ca
22、rbon dioxide n. 二氧化碳 per unit of GDP 单位GDP(per unit of gross domestic product) the National Energy Administration 国家能源局 harmonious adj. 和谐的(with each part fitting well with other parts) e.g. There is nothing more harmonious, more symmetrical, than this group of structures.,Curbing carbon emissions,c
23、apacity n. 生产量(the amount of something that a factory, company, machine, etc. can produce or deal with) e.g. Is this manufacturing cost based on production figures at full capacity? kilowatt n. 千瓦(功率单位) non-fossil adj. 非化石的,Curbing carbon emissions,shutdown v. 关闭(closedown) e.g. The best radio chann
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