高中英語選修六unit4Warmingupandreading第1頁/共36頁Extremeheat酷暑第2頁/共36頁

Canyouthinkofsomenaturaldisasters(自然災(zāi)害)becauseoftheextremeheat?第3頁/共36頁drought(旱災(zāi))第4頁/共36頁fire第5頁/共36頁flood第6頁/共36頁hurricane/typhoon第7頁/共36頁Ifeelhot!第8頁/共36頁.×√Low-carbonlife（低碳生活）第9頁/共36頁TheEarthisBecomingWarmer--ButDoesItMatter?地球在變暖——要不要緊？Reading第10頁/共36頁NewWordsandexpressionstemperature溫度onedegreeFahrenheit華氏一度explore探索humanactivities人類活動phenomenon現(xiàn)象subscribeto同意，贊成fossilfuels礦物燃料byproduct副產(chǎn)品“greenhouse”gases溫室氣體atmosphere大氣methane甲烷，沼氣degreeCelsius攝氏度quantitiesof大量的accuratemeasurements精確的測量data資料，數(shù)據(jù)catastrophe大災(zāi)難beopposedto反對environmentalconsequences環(huán)境影響agreatrangeof大量的evenif即使keepon繼續(xù)第11頁/共36頁

ScanningWho

：_____________Threescientists:____________________________

SophieArmstrongDrJaniceFoster;CharlesKeeling;GeorgeHambley;第12頁/共36頁Whatarethetwographsabout?Graph1showsthetemperaturedifference(溫度差異)from1860to2000.Graph2showsthecarbondioxidecontent(二氧化碳含量)intheatmospherefrom1957to1997.Graph1:Graph2:第13頁/共36頁CarefulReading第14頁/共36頁Paragraph1Paragraphs2&5Paragraph6Part1Part2Part4MainideaofthetextPart3Paragraph7Howglobalwarmingcomesabout?(全球變暖是怎樣產(chǎn)生的)Twodifferentopinionsaboutglobalwarming.Theearthisbecomingwarmer.Shouldwedoanything?第15頁/共36頁Duringthe20thcentury,thetemperatureoftheearthdidn’tseemtoincreasemuch.2.Thereisnodoubtthatglobalwarmingiscausedbythehumanactivities.3.Notallscientistsbelievethattheincreaseintheearth’stemperatureisduetotheburningoffossilfuels.Trueorfalse

第16頁/共36頁4.Thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100—150years.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodtotheearth.6.Weknowtheeffectsofglobalwarming.第17頁/共36頁Howhasglobalwarmingcomeabout(產(chǎn)生)?1.Humanactivity

Theproblembeginswhenhugequantitiesofextracarbondioxide(大量的二氧化碳)areaddedintotheatmosphere.…isduetotheburningoffossilfuels…2.

GreenhousegasesParagraph2&3第18頁/共36頁carbondioxideFossilFuel(礦物燃料)coaloilgasglobalwarming●●●●●●produce二氧化碳第19頁/共36頁Haveyoueverseenagreenhouse?第20頁/共36頁Methane['mi:θein]

WhatareGreenhousegases?Therearegasescalled“greenhousegases”,including…CarbondioxideWatervaporTheytraptheheatfromthesunandwarmtheearth.第21頁/共36頁Dr.Foster:_____________________GeorgeHambley:_________________Whatdothescientiststhinkaboutglobalwarming?Dotheyagreewithoneanother?Itwouldbeacatastrophe.weshouldnotworryaboutit.Theyhavequitedifferentattitudestowardsthisissue.Paragraph6第22頁/共36頁Doesglobalwarmingmatter?Positiveeffects（正面影響）

Negativeeffects(負面影響）第23頁/共36頁causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffects第24頁/共36頁tsunamiThesealeveltorise.第25頁/共36頁第26頁/共36頁tornados第27頁/共36頁Severestormsdroughtsfaminesthespreadofdiseases第28頁/共36頁destructionofspecies第29頁/共36頁causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsmakelifebetter第30頁/共36頁Summary

HowEffects

第31頁/共36頁1.Humanactivities2.GreenhousegasesCarbondioxide第32頁/共36頁causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsma