《Unit1SavingtheEarth.pptx》由会员分享，可在线阅读，更多相关《Unit1SavingtheEarth.pptx（12页珍藏版）》请在三一文库上搜索。
1、M1 Environment and life,Unit 1Saving the Earth,Why does our Earth cry for help?,air pollution,land pollution,water pollution,cutting down .,n. an article in a newspaper or magazinen that gives an opinon about a new book,play ,film etc.,v. go over,Reading: The green consumer,书评，影评,Tony Ma wrote a rev
2、iew about the book.,This book says our world is in danger. It describes the various threats to the environment. The situation is so serious that we must do something to save the Earth.,variousthreats,save the Earth,/vers/ adj.,/ret/ n.,The _ effect,Damage to the _ layer O3 层,B_ _,D_ of the forests (
3、destroy),1,Threats,Scan the passage , complete the subtitles,greenhouse,ozone,estruction,ad habits,1,2,3,4,n.温室 a glass building used for growing plants that need warmth,light and protection.,/zn/ n.,Read The greenhouse effect part, answer some questions.,/tmsf(r)/ n.,The writers ask us to imagine t
4、hat the Earth is inside a kind of greenhouse with the atmosphere around it. The atmosphere acts like the glass: it lets sunlight in and keeps warmth from getting out. The atmosphere is essential for all living things. Without it, the Earth would be as cold and lifeless as the surface of the moon.The
5、 trouble is that our atmosphere is changing because we are polluting it with chemicalsin the form of gasesand it is keeping in too much heat!,1.Whats the use of the atmosphere? 2.Why is the atmosphere essential for all living things?3. Whats the problem with our atmosphere?,Complete the table,chemic
6、als- in the form of gases (mainly CO2),1.cause the level of the sea to rise,2. flood cities and even whole countries,co2-carbon dioxide/k:bn daksad/,factories , cars,be produced by burning fuels,flood n. 洪水 v.（使）灌满水，淹没,Which threat makes worse ?,the greenhouse effect,Destruction of the forests,fores
7、t firescut down trees,1.make the greenhouse effect worse2.cause soil erosion and flooding3.destroy the homes of people and animals that live in the forests,Trees take in CO2.,.,Listen and complete the Damage to the ozone layer part.,20,50,protective,burning,hole,fridges,plastic items,What informatio
8、n do you want to get from this part?,use chemicals called CFCs,1.make holes in the ozone layer2.the sun would burn us up,塑料物品,massive mountains of rubbish,The fouth threat,Bad habits,1.use things once and then throw them away2. dont know what to do with the rubbish,it pollutes our land and sea,Waste
9、,How can we save the Earth?The book is asking us to become green consumers. That means we should only buy and use environmentally friendly goods so that we can save the Earth. These goods will not damage the environment.Lets be green consumers and enjoy living a better life on the Earth!,Lets read t
10、ogether,Discussion,We should.Wed better (not ).,Solutions,Homework,1. Read the text aloud at least three times and make sure to pronounce the words correctly.,2.Finish the poster “My green promise”and try to use the information from the text.,My Green PromiseOur world is _. To change the s_ situation we must become_.I promise that I will always_,_ and _.I will _ instead of_._ is bad for our Earth. So I will never _._.In a word , I will t_ my b_ to save our Earth. I will only buy and use _ goods. These are my promises I will always keep. Sign here_,