新课标高中英语选修阅读.pptx
Things that consume energy video playerrefrigeratorcomputer hairdryerlight/TV/water dispensercarwashing machine第1页/共36页energy sourcessolar energyoilcoalbiomass energynuclearenergyhydro-electric powerwind powernatural gaswave/tidalenergy第2页/共36页CoalOilNatural gasUranium(nuclear energy)Wind(wind power)Sun(solar energy)Water(hydro-electric power)Plant waste(biomass energy)Hot springs or geysers(geothermal energy)The sea(tidal energy)Fossil fuelsNon-renewableRenewable第3页/共36页 What are they?What are these buildings made of?Whats the use?greenhouse/glassA greenhouse is used for_,especially during _ weather.Turn to Pre-reading 1,Page 25.Read&answer.growing plantscold第4页/共36页_ the heat from the sunkeeps it from _ the air upHow does a greenhouse work?trapfrom:keep sth in a place存住来自的trapsescapingheats第5页/共36页In the atmosphere surrounding the earth there are gases,which are called“greenhouse gases”.methanewater vaporcarbon dioxide第6页/共36页carbon dioxideFossil Fuel(矿物燃料矿物燃料)coaloil gasglobal warming produce第7页/共36页What do you think greenhouse gases do?Greenhouse gases _ the heat of the sun and therefore _ the earth.It is known as _.Nowadays our earth is becoming _.greenhouse effecttrapwarmwarmer and warmer第8页/共36页第9页/共36页SkimmingSkim the title:THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?What is the main topic?A.The earth.B.Global warming.C.Becoming warmer doesnt matter.第10页/共36页SkimmingWhere does this article most probably come from?A.Newspaper B.Novel C.Magazine 第11页/共36页Skimming Who wrote the article?What is the name of the magazine?Tip:In English,some nouns begin with a capital letter(大写字母),such as names of people and places,titles of magazines,newspapers,stories and books,peoples titles(头衔),etc.Skim the first paragraph:Sophie ArmstrongEarth Care第12页/共36页SkimmingWhat are the names of the three scientists mentioned in the article?Dr Janice Foster,Charles Keeling,George Hambley 第13页/共36页1.How much did the temperature of the earth rise during the 20th century?About one degree Fahrenheit.2.What is the question of Sophie Armstrong?So how has this come about and does it matter?Para.1第14页/共36页Para.21.What conclusion can you make from the Graph1?The earth is becoming warmer.2.Who is to blame for the earths becoming warmer?It is human activity that has caused this global warming rather than a random but natural phenomenon.第15页/共36页 Para.31.How do human affect the earth warming up?It is due to the burning of fossil fuels like coal,natural gas and oil to produce energy.2.What is greenhouse gases?Greenhouse gases are some byproducts of the process of producing energy,the most important one of which is carbon dioxide.第16页/共36页3.What is greenhouse effect?It is a natural phenomenon which happens when small amounts of gases in the atmosphere,like carbon dioxide,methane and water vapour,trap heat from the sun and therefore warm the earth.第17页/共36页4.What kind of problem does it begin when huge quantities of extra carbon dioxide into the atmosphere?It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.第18页/共36页1.What conclusion can you get from Graph2?The levels of carbon dioxide have increased greatly over the last 100 to 150 years.2.What did the scientist Charles Keeling find between the years from 1957 to 1997?He found that the carbon dioxide went up from around 315 parts to around 370 parts per million.Para.4第19页/共36页Para.51.Do the scientists accept the data?They accept the data and agree that it is the buring of fossil fuels that had resulted in this increase in carbon dioxide.2.How high will the temperature increase go?Dr Janice Foster says that the amount of warming could be as low as 1 to 1.5 degree Celsius,but it could be as high as 5 degrees.第20页/共36页Tip:You can know somebodys opinion through understanding hisor what he said.What do Dr.Janice Foster and the scientist George Hambley think about the results of global warming?Do they agree with one another?quotations(引言引言)Para 6第21页/共36页Dr.Janice Foster thinks the effects of global warming could be very serious.George Hambley thinks global warming will be mild with few bad environmental consequences.They dont agree with each other.Para 6第22页/共36页Does global warming matter?Positive effects Negative effects 第23页/共36页1.cause the sea level to rise2.severe storms3.floods4.droughts5.famines6.the spread of diseases7.disappearance of speciesPositive effects Negative effects 第24页/共36页1.cause the sea level to rise2.severe storms3.floods4.droughts5.famines6.the spread of diseases7.disappearance of speciesPositive effects Negative effects 1.make plants grow quicker2.crops will produce more3.a greater range of animals4.make life better第25页/共36页Para.71.What do we actually do now and what will happen to the climate?We donot start reduing the amount of carbon dioxide.The climate is going to keep on warming for decades and centuries.2.What about the effects of global warming?No one knows.Does that mean we should do nothing Or,are the risks too great?第26页/共36页The organization of the article:IntroductionA titleBodyConclusion第27页/共36页Skim the body part(7 paras):Para.1Para.2-5I III IIPara.6IIIIIIPara.7IVIVIntroduction Body Conclusion第28页/共36页Main ideas of each partWriting techniques(Paragraph 1)Introduce a debate over the issue of global warming.Raising a question第29页/共36页Main ideas of each partWriting techniques(Paragraphs 2-5)Illustrate how global warming comes about.Giving examples,using graphs,explanation.第30页/共36页Main ideas of each partWriting techniques(Paragraph 6)List two different attitudes among scientists towards global warming.Giving examples,making contrast.第31页/共36页Main ideas of each partWriting techniques(Paragraph7)Its up to readers to think and decide whether people should do something about global warming or not.Using a question,leaving readers to think over the issue.第32页/共36页Idea-sharingIdea-sharingWhat will global warming bring to us in your opinion?I think In my opinionIt will cause/make 第33页/共36页Assignment Write a short passage about the effects of global warming.Prepare the language points of this passage and underline the important ones.After remembering the vocabulary,do the exercises on Page 28.第34页/共36页第35页/共36页感谢您的观看。第36页/共36页
