高二英语Unit9 Warming up课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 9Saving the earth,Warming up,Lets enjoy a song,Heal The World,Michael Jackson,Heal the world,Make it a better place,For you and for me,And the entire human race,There are people dying,If you care enough for the living,Make it a better place,For you and for me,Think about the generations,And we,wannar,to make better place,For our children,and children,s children,So that they know,There is a better world for them,And think they can make it a better place,Theres a place in your heartAnd I know that it is loveAnd this place could be much,Brighter than tomorrowAnd if you really tryYoull find theres no need to cryIn this place youll feelTheres no hurt or sorrowThere are ways to get thereIf you care enough for the livingMake a little spaceMake a better place.,If you want to know whyTheres love that cannot lieLove is strongIt only cares of joyful givingIf we try we shall seeIn this bliss we cannot feelFear or dreadWe stop existing and start livingThen it feels that alwaysLoves enough for us growingSo make a better worldMake a better world.,Heal the world,Make it a better place,For you and for me,And the entire human race,There are people dying,If you care enough for the living,Make it a better place,For you and for me,Because our homethe earth,is injured by pollutions and she must be sent to hospital.,What do we need to save the world?,Pollution and serious problems facing the earth,Water pollution,Trash/garbage/rubbish,Air pollution,Deforestation(,毁林),The act of cutting down or burning trees,The area of desert is growing,.,Desertification,（,沙漠化）,Starvation,The state of suffering and death caused by having no food.,How many kinds of pollution are mentioned in the video?What causes the problems?What are the effects?,Water,Pollution,Rubbish,Air pollution,Deforestation,Desertification,Starvation,Water is undoubtedly the most precious natural resource exciting on our planet.Over of the Earths surface is covered by oceans.,Unfortunately,most of the water cannot be used for drinking.,Do you know?,70,It is estimated that over,people lack safe drinking water and that at least deaths per year can be attributed to,waterborne,diseases.,1.5 billion,Can you imagine that this is the water they drink everyday,5 million,Causes,Effects,What can we do to stop water pollution?,Water pollution,waste water from cities,waste water from factories,Waste water from agriculture,Causes,.,Effects,What can we do to stop water pollution?,The waste water from factories flow into rivers/lakes/seas without treatment.,People throw rubbish into rivers/lakes,The harmful materials such as oil spills(,漏油),pollute water resources,Many people dont have enough clean drinking water.,There would be more patients in the hospitals,because of waterborne diseases.,The animals living with water would die.,We should be more careful with our water,try to use less and recycle as much water as possible.,Never throw rubbish into rives or lakes.,We should try to invent a new technology to deal with the waste water.,Water pollution,A great deal of power is needed to run the factories of modern industrial nations.Automobiles,trains,planes,and buses need power too.Nearly all of this power is produced in the same way,-,burning fuels.The burning produces wastes.Some of the wastes get into the air,causing air pollution.,Do you know?,Do you know?,4 billion,of throwaway cartons we get through in a year.They are typically made of several materials which are difficult to recycle,7,million,of tones of food dumped into landfill every year.,Over,2.4 billion,people have no access to good,sanitation.,Every day,as many as half of all the people on the earth suffer from one of,the many diseases caused by poor,sanitation,Causes,Effects,What can we do to reduce the amount of rubbish?,Rubbish/waste pollution,People throw rubbish in the streets or in nature.,The products use too much packaging or wrapping,Make the environment ugly,dirty and even dangerous,People may suffer diseases because of poor living conditions.,Never use one-off chopsticks,lunch-boxes and cups.,We should not throw rubbish at will but put the waste into rubbish bins.,We should pay attention to garbage classification.,Air pollution causes,deaths in the world every year.,more than 2.7 million,Causes,Effects,What can we do to prevent air pollution,Air pollution,discussion,smoke from factories,smoke from cars,Smoke from,power station,Acid rain cause a lot of damage.,travel;fall to the ground in the rain,Causes,Effects,What can we do to prevent air pollution,Air pollution,Motor vehicles are a major source of air pollution.,The waste gas of burning coal and oil from factories,power stations,air conditioners.,Polluted air causes diseases and may make it easier for children to get sick in the future.,Acid rain(,酸雨).,Climate changemore carbon dioxide is released into the atmosphere,thus increasing the effects of global warming.,Walk or ride a bicycle instead.,Make sure the harmful smoke should be made harmless before it goes into the air.,Limit the number of cars.,Do you know?,Deforestation is the permanent destruction of indigenous forests and woodlands,Deforestation,An area of forest equal to,20,football fields is lost every minutes.,Currently,12 million,hectares of forests are cleared every year.,Why are these trees being tore down,Many precious animals are killed and dying out,.,handkerchief,Deforestation,Causes,Effects,What can we do to lessen deforestation?,Forest and woodlands have turned to agricultural land to feed growing numbers of people.,Cattle raising/ranching/grazing to earn money.,Commercial logging.,Soil erosionwith the loss of protective cover of vegetation more soil is lost.,Extinction of species which depend on the forest for survival.,Cause desertification because of dry,hot,arid conditions.,When you sneeze,dont use paper tissue;try to use handkerchief instead.,We should not send post-cards but electronic-cards by e-mails.,Do recycle paper or cans.,Do you know,A definition of desertification should recognize that it is a land degradation process that involves a continuum of change,from slight to very severe degradation of the plant and soil resource,and is due to mans activities,Too many sheep and cattle.,All the grass is eaten.,Grass never grows again;The land becomes desert.,Sandstorm,Causes,Effects,What can we do to stop desertification?,Desertification,Over cultivation exhausts the soil.,Deforestation removes trees that hold the soil to the land.,Overgrazing of livestock strips the land of grasses,Cause bad weather such as sandstorm.,Lands or mountains turn into desert.,If the land turns into desert,we wont be able to grow enough food.That may cause starvation.,We must preserve existing trees and plant new trees.,Take part in the activities of conservation groups,the purpose of which is to prevent desertification.,Do you know?,Starvation is mainly caused by the uneven distribution of wealth and sometimes by war or natural disasters.,Half the world-almost 3 billion people-live on less than 2 dollars a day.,1.3 billion people live on less than 1 dollar a day.,38,000,children starve to death each day,60,000,000,die of starvation each year,Viet Nam War,Iraq War,overpopulation,overpopulation,Starvation,Causes,Effects,What can we do to help people in hunger?,War.Civil and international wars cause hunger.,Environment.Overgrazing,over-cultivation,and desertification have transformed once productive farm lands into wastelands.,Overpopulation.Not enough food for the growing population.,Millions of people are chronically undernourished.,Cause society problems:violence,crime,Protect people from famine by giving food to them in emergencies.,Help poor people find and hold jobs or training them for jobs where they can make money.,Make farming more productive so that there will be more food for the worlds growing population.,What is the key of protecting the environment?,thinking,Peoples environment protection consciousness,Do you have understanding and concept of protecting the environment?,Wear coats made of fur for they are beautiful.,Build more and more houses on farmland.,Dont waste electricity.,Quiz show,Use as much water as we like because we pay for it.,Use one-off chopsticks,lunch-boxes and cups.,Plant trees around your house.,Use fridges and air conditioners to keep cool,.,We must save our food.We should get as much as food as we can.,Save electricity by turning off light,TV,radio,computer when you are not using them.,While washing your hands and brushing your teeth,turn off the water.,Homework,Write a short passage to tell us what you will do to help the environment.,Try learning to sing this song.,Earth is everybodys home and nobody likes living in a dirty home.Together,we can make the earth a,cleaner,healthier,and,more pleasant,place to live.,