unit22-lesson-3-Natural-disaster.ppt

Unit22EnvironmentalProtectionLesson3NaturalDisasters,Teachingobjectives,Inthislesson,wewill:1.practicereadingstrategiestocompletetextswithsentencegaps.2.talkaboutdisasterswiththehelpofthelearntvocabularyaboutnaturaldisasters.,Besidesearthquake,therearemanynaturaldisasters,canyounamesome?,Flood,Thunderstorm,VolcanicEruption,Typhoon/Hurricanes,Tsunami,ForestFires,Drought,Landslide,The7.0magnitudestrongearthquake,happenedinSichuanLushanonApril20th,hasbeentouchingthewholeChineseshearts.Itwasonagrandscale.Thousandsofpeoplelosttheirwives,childrenTheseparationfromtheirfamiliesmadethemlivearough(orhard)time.Duringthequake,housesfelldown.Inthemountainousareastones,bricksslipandslidedownhillinthelandslides.Peoplelivedinshabbyhousesortents.HoweverSichuaneseareverystrong.Withthehelpofthewholenation,theyareconstructingtheirhomesnow.,Lushanearthquake,Vocabulary,1.grandadjbigandveryimpressive巨大的2.scalenthesizeorlevelofsth规模，大小3.separationntheconditionofbeingseparated分离，分开.4.roughadjunpleasantordifficult艰难的5.mountainousadjhavingmanymountains多山的6.slipvfalloff滑落7.slidevtomovesmoothlyoverasurface滑行8.landslidensuddenfallofalotofearthorrocksdownahill,cliff滑坡，山崩9.shabbyadjoldandinbadcondition破烂的10.constructvbuild建造,Natureisturningonus,Task1:SummarymainideaofeachparagraphTask2:CompletethegapsinthetextwithsentencesTask3:PractiseandExpanding,Task1:Reading,Mainidea:Naturaldisastersaregettingworsebecauseofhumanactivities.,ExamplesshownaturaldisastersbecomecommonAnexampleofvolcaniceruption&earthquakeshowtheirthreattoourworld.CausesofnaturaldisastersUrbanization&industrializationOverpopulationincitiesmakesmorepeopleinthedangerofnaturaldisastersExpertspredictthatnaturaldisasterswillgetworse,Para1:Para2:Para3:Para4:Para5:,Readingstrategies,Readthesentencesbeforeandafterthegapandlookforcluesaboutthemissingsentence.e.g.isitanexampleofwhatismentionedbefore?,Certainwordsmayhelpyou:timereferences(then).pronounreferences(it,that),linkingwords(however).Decidewhichsentencegoesinthegap.checkthatitfitsthesentencesbeforeandafterit.,Usethestrategiestocompletethegapsinthetext(1-5)withthesesentence(a-g),Therearetwoextrasentencesyoudonotneed.,A)Butevidenceshowsthat73,000yearsagotherewasamuchgreatereruption.B)EvenEuropehassufferedandlargeareashavebeenunderwater.C)Thisisprobablynotthemostimportantfactoreither.D)Third,theotherbitsoflandyoumighthavebeenabletofarmarenowuseless.E)Ontopofthataddglobalwarming.F)Forexample,theyellowriver,oncefamousforflooding,failedtoreachtheseaatallfor226daysin1997.G)Oneanswerisoverpopulation.,Task2:Completethetext,Paragraph1TherehasbeenterriblefloodinginAsia,Africa,AmericaandOceania.(1)_Stormshavebeengettingworseeverywheretoo,withagrowingnumberofhurricaneshittingtheUS,andCentralAmerica.,b,ReducedrainfallhasaffectedlargeareasofAfricaforyearsleavingirrigationcanalsdryandmanyotherzonesarebecomingdrier.(2)_Anumberofnationshavealreadybeeninarmedconflictoverwater,andreducedrainfallinthewestoftheUShasresultedinhugeforestfires.,f,Paragraph3,Sowhyisnaturebeginningtoturnonus?(3)_Thepopulationoftheworldisgrowingatthedisturbingrateof10,000peopleanhour,nearly90millionayear,withmostofthegrowthinthedevelopingworld.,g,Thesehomes,seldommadeofbricks,caneasliyfalldowninearthquakesorslipandslidedownhillinlandslides,especiallyinmountainousareas.(4)_Thishasmainlybeencausedbythehugeamountsofcarbondioxideproducedbyfactoriesandvehicles,andthedestructionoftheworldsforests.,e,Paragraph5,TheworsteruptioninhumanhistorywasprobablyMtTamborain1815,inIndonesia.DustfromthevolcanorolledacrosstheearthsskiesandprettymuchcancelledthefollowingsummerinEuropeandAmerica.(5)_“Itreducedtemperaturesbymaybe6insomeplacesandthewholeplanetwassentintowinterforyears.Andthereareabouttwooftheseeventsevery100,000years”,a,1.Thiscatastropheisstillveryfreshinthemindsofpeopleworldwidewhohavenotyetgotovertheirseparationfromlovedoneslostinthetsunami.,译文：在世界各地许多人的心目中,那场灾难仍然记忆尤新。他们还没有从海啸中丧失亲人的打击中恢复过来。,Task3:TextsummaryFillintheblanksaboutthetext.,Inthelast_years,therearemoreandmoredisasterssuchas_,_,thunderstorms,earthquakes,_,volcanic_and_firesallovertheworld.Whyaresomanydisasters?Oneofthereasonsisover-_.,ten,floods,tsunamis,typhoons,eruptions,forest,population,_addition,_changeandglobal_causedbyfactories,vehiclesanddeforestationcanlead_thedisastersormakethemworse.Atpresent,volcanoesandearthquakesaremore_withthefast_ofpeople.,In,climate,warming,to,dangerous,growth,Earthquakestakethelivesof1.6millionpeopleinthelasthundredyears.Whatisworse,thedisasterexpertspredictthatthethingswillget_.,worse,Readthetextagainandanswerthesequestions.,1.Whatistheattitudeofthejournalisttowardsthefuture?Pessimistic.2.Whoaremostlikelytobethevictimsofnaturaldisasters?Poorpeople.,3.Whyaretherenowmorehurricanes,floodsanddroughts?Overpopulationandindustrialization.4.Whyarevolcanoesandearthquakesmoredangerousnow?Abigpopulationincities(orurbanization),5.Whatcouldbethebiggestthreattotheplanetinthefuture?Avolcaniceruption.6.Whateffectsmightthisthreathave?Lowtemperature(Af