1、Unit 6 Earth firstUsing languageWe are experiencing_.Global warming has become a serious problem.Its urgent to deal with global warming.global warming(A4P88)What do you know about these expressions?water conservationLED bulbrenewable energycarbon footprintgreenhouse effectreusable water bottle水资源保护可
2、再生资源碳足迹可重复使用的水瓶LED 灯泡温室效应carbon footprintA carbon footprint is the amount of greenhouse gases-primarily carbon dioxide-released into the air by a particular human activity.For example,when you drive a car,the engine burns fuel which creates a certain amount of greenhouse gases.When you heat your hou
3、se with coal or electricity,you also generate greenhouse gases.Even the production of food and goods emits some quantities of greenhouse gases.Together these emissions make up a carbon footprint.(A5P88)complete the brochure手册 with the expressions in activity 41 reusable water bottle2 carbon footprin
4、t3 renewable energy4 LED bulb5 Water conservation6 greenhouse effectDo you know other expressions about global warming?CO2:carbon dioxidecarbon emissioncarbon neutralrecycle v.recyclable adj.What can we do to help deal with global warming?n reduce,reuse,repair&recycle n ask for an electronic receipt
5、n take more public transportn turn off the taps when we find the water runningn turn off the lights if we are the last to leave a roomn.listening and speakingsmogHow much do you know about smog?Environmental problems to be solvedSmog comes from the words smoke and fog,and it is used to describe the
6、air pollution in cities caused mainly by traffic and factories.Smog can be dangerous because it causes severe breathing problems and infections.Did you know?1.word formation of smog?2.the harmful effect of smog?1 What the word“smog”means.2 When the word“smog”appeared.3 What caused smog in the past.4
7、 What causes smog now.5 The effects of smog on the environment.6 How governments try to reduce smog.7 What will happen if we dont reduce smog.(A7 P89)Choose the topics that are covered 涉及.(A8 P89)complete the slides幻灯片1 1900s2 The Great Smog3 no wind4 chemicals coming from traffic5 chemicals6 requir
8、ements of paying to drive The Great SmogThe Great Smog of 1952 was a severe air-pollution event that occured in London in December 1952.Cold weather,combined with windless conditions,collected airborne pollutants to form a thick layer of smog over London.The Great Smog lasted from 5 December to 9 De
9、cember and then dispersed when the weather changed.直到棺材店和花店的供应都用光了，人们才意识到烟雾的致命影响。支气管炎和肺炎死亡人数增加了7倍以上。伦敦东区的死亡率上升了9倍。无数在烟雾中迷失的小鸟撞向建筑物。11只获奖的小母牛被带到伦敦参加表演恰巧遇上大烟雾，最终窒息而死。The Great SmogNow talk about what the students say to interrupt the lecturer politely.A polite interruption is usually framed as a reque
10、st for permission to interrupt someone,often starting with If.,May I.?or Can/.?This may be preceded with an apology such as Sorry,.or Excuse me,.Usually we interrupt someone when they pause for breath,or during the slight pause between spoken clauses.n learning to learnActivity 9 on page 89 Work in pairs and talk about recycling.Activity 10 Talk about water pollution in pairs.There are various reasons accounting for water pollution.First.Besides.Water pollution cause a lot of problems to us.For example.To conserve water,we can.We start small.
