高考英语-概要写作--公开课PPT课件

高考概要写作SummaryWriting,1,.,阅读下面短文，根据其内容写一篇60词左右的内容概要。Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.Justthreecropswheat,riceandcornprovidemorethantwo-thirdsofthecaloriesthatpeopleconsume.Suchcrops,andasmallnumberofotherimportantcrops,comefromfarmingregionssometimesreferredtoas“breadbaskets”.However,theseareasoftenoccupyarelativelysmallportion(部分)oftheglobe.Worsestill,thebreadbasketsareeasilyaffectedbybadweather.Eventssuchaswidespreadfloodingorextendedheatwavecankillcrops.Thatsespeciallytrueifthebadweatheroccurswhenacropisyoung,fruitingorapproachingharvest.Unfortunately,bigcropfailuresintwoormorebreadbasketscouldleadtowhatresearcherscalla“foodshock”.Thatmeansanoverallshortageoffoodwouldoccur.Extremefoodshocksusedtohappeneverycentury.Ortoputitanotherway,thatsonlyaboutonceinveryfourgenerationsofhumans.However,accordingtostudies,astheclimatewarms,highandlowtemperaturesbecomemoreextreme,andby2050,foodshockscouldoccuraboutonceevery30years.Inotherwords,apersonborninthemiddleofthecurrentcenturymightlivethroughtwoorthreeextremefoodshocksduringtheirlifetime.Sowhatcanpeopledotohelpavoidfoodshocks?Makingagricultureefficientisonechoice.Butoneofthemosteffectivewaystofightagainstfoodshocksmightbetocutdownonfoodwaste.“Ifwecouldcutfoodwasteinhalf,”saidSethCook,aBritishenvironmentalscientist,“wecouldfeedanextrabillionpeople.”,2,.,3.addsometransitionalwordstomakethepassagesmooth.,1.Findoutkeyinformationofeachpara.,2.Rewritethekeyinformation,Expressthesamemeaningusingyourownwords,phrasesorstructures.,Concise!60-70words,3,.,Step1:Carefulreadingforthekeywords,phrasesorsentencesineachparagraphUnderlineorcirclethekeyinformation,Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.,4,.,Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.,5,.,Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.,6,.,Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.,7,.,Para.2:Justthreecropswheat,riceandcornprovidemorethantwo-thirdsofthecaloriesthatpeopleconsume.Suchcrops,andasmallnumberofotherimportantcrops,comefromfarmingregionssometimesreferredtoas“breadbaskets”.However,theseareasoftenoccupyarelativelysmallportion(部分)oftheglobe.Worsestill,thebreadbasketsareeasilyaffectedbybadweather.Eventssuchaswidespreadfloodingorextendedheatwavecankillcrops.Thatsespeciallytrueifthebadweatheroccurswhenacropisyoung,fruitingorapproachingharvest.,8,.,Para.2:Justthreecropswheat,riceandcornprovidemorethantwo-thirdsofthecaloriesthatpeopleconsume.Suchcrops,andasmallnumberofotherimportantcrops,comefromfarmingregionssometimesreferredtoas“breadbaskets”.However,theseareasoftenoccupyarelativelysmallportion(部分)oftheglobe.Worsestill,thebreadbasketsareeasilyaffectedbybadweather.Eventssuchaswidespreadfloodingorextendedheatwavecankillcrops.Thatsespeciallytrueifthebadweatheroccurswhenacropisyoung,fruitingorapproachingharvest.,9,.,Para.2:Justthreecropswheat,riceandcornprovidemorethantwo-thirdsofthecaloriesthatpeopleconsume.Suchcrops,andasmallnumberofotherimportantcrops,comefromfarmingregionssometimesreferredtoas“breadbaskets”.However,theseareasoftenoccupyarelativelysmallportion(部分)oftheglobe.Worsestill,thebreadbasketsareeasilyaffectedbybadweather.Eventssuchaswidespreadfloodingorextendedheatwavecankillcrops.Thatsespeciallytrueifthebadweatheroccurswhenacropisyoung,fruitingorapproachingharvest.,10,.,Para.3:Unfortunately,bigcropfailuresintwoormorebreadbasketscouldleadtowhatresearcherscalla“foodshock”.Thatmeansanoverallshortageoffoodwouldoccur.Extremefoodshocksusedtohappeneverycentury.Ortoputitanotherway,thatsonlyaboutonceinveryfourgenerationsofhumans.However,accordingtostudies,astheclimatewarms,highandlowtemperaturesbecomemoreextreme,andby2050,foodshockscouldoccuraboutonceevery30years.Inotherwords,apersonborninthemiddleofthecurrentcenturymightlivethroughtwoorthreeextremefoodshocksduringtheirlifetime.,11,.,Para.3:Unfortunately,bigcropfailuresintwoormorebreadbasketscouldleadtowhatresearcherscalla“foodshock”.Thatmeansanoverallshortageoffoodwouldoccur.Extremefoodshocksusedtohappeneverycentury.Ortoputitanotherway,thatsonlyaboutonceinveryfourgenerationsofhumans.However,accordingtostudies,astheclimatewarms,highandlowtemperaturesbecomemoreextreme,andby2050,foodshockscouldoccuraboutonceevery30years.Inotherwords,apersonborninthemiddleofthecurrentcenturymightlivethroughtwoorthreeextremefoodshocksduringtheirlifetime.,12,.,Para.3:Unfortunately,bigcropfailuresintwoormorebreadbasketscouldleadtowhatresearcherscalla“foodshock”.Thatmeansanoverallshortageoffoodwouldoccur.Extremefoodshocksusedtohappeneverycentury.Ortoputitanotherway,thatsonlyaboutonceinveryfourgenerationsofhumans.However,accordingtostudies,astheclimatewarms,highandlowtemperaturesbecomemoreextreme,andby2050,foodshockscouldoccuraboutonceevery30years.Inotherwords,apersonborninthemiddleofthecurrentcenturymightlivethroughtwoorthreeextremefoodshocksduringtheirlifetime.,13,.,Para.4:Sowhatcanpeopledotohelpavoidfoodshocks?Makingagricultureefficientisonechoice.Butoneofthemosteffectivewaystofightagainstfoodshocksmightbetocutdownonfoodwaste.“Ifwecouldcutfoodwasteinhalf,”saidSethCook,aBritishenvironmentalscientist,“wecouldfeedanextrabillionpeople.”,14,.,Para.4:Sowhatcanpeopledotohelpavoidfoodshocks?Makingagricultureefficientisonechoice.Butoneofthemosteffectivewaystofightagainstfoodshocksmightbetocutdownonfoodwaste.“Ifwecouldcutfoodwasteinhalf,”saidSethCook,aBritishenvironmentalscientist,“wecouldfeedanextrabillionpeople.”,15,.,Para.4:Sowhatcanpeopledotohelpavoidfoodshocks?Makingagricultureefficientisonechoice.Butoneofthemosteffectivewaystofightagainstfoodshocksmightbetocutdownonfoodwaste.“Ifwecouldcutfoodwasteinhalf,”saidSethCook,aBritishenvironmentalscientist,“wecouldfeedanextrabillionpeople.”,16,.,Step2:RewritethekeyinformationinourownwordsTip1:RewriteatthesentencelevelTip2:Rewriteatthewordlevel,17,.,Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger._(changethecompoundsentence并列句intoonesimplesentence简单句)_(changethesubject),Feedingtheworldspopulationisa_challenge.,_isabiggerandbiggerchallengetofeedtheworldspopulation.,biggerand,bigger,It,18,.,_(changetheword“worlds”)_(changethephrase“abiggerandbiggerchallenge”),Para.1:Itisabiggerandbiggerchallengetofeedtheworldspopulation.,Itisabiggerandbiggerchallengetofeedtheglobalpopulation.,Itis_tofeedtheglobalpopulation.,challenging,moreandmore,19,.,Para.1:Itismoreandmorechallengingtofeedthe_globalpopulation.(addanadjective),Para.1:Feedingtheworldspopulationisabigchallenge,anditisabouttogetbigger.Rightnow,alittlemorethan7.3billionpeoplesharetheplanet.By2050,somescientistsestimate,theworldspopulationmayreach9billion.However,thechangingclimatewillprobablymakefeedingthisfargreaternumberaveryfrighteningtask.Thatistheconclusionreachedbysomescientists.,increasing,growing,20,.,Para.2:crops,breadbaskets,Theseareasoftenoccupyarelativelysmallportionoftheglobe._(simplifythesentence)_(use“manycrops”asthesubject),Breadbasketsareoften_.,Manycrops_on_breadbaskets.,limited,areoftengrown,limited,21,.,Para.2:Thebreadbasketsareeasilyaffectedbybadweather._(changetheword“affect”),Breadbasketsareeasily_/_bybadweather.,Manycropsareoftengrownonlimitedbreadbaskets.(combinethetwosentences),Para.2:Manycropsareoftengrownonlimitedbreadbaskets_areeasilyimpactedbybadweather.,that/which,influenced,impacted,22,.,Para.3:bigcropfailures,couldleadto,a“foodshock”Thatmeansanoverallshortageoffoodwouldoccur._(putthekeyphrasesintoonesentence)_(combinethetwosentences),Bigcropfailurescouldleadtoa“foodshock”.,Bigcropfailurescouldleadtoa“foodshock”_meansanoverallshortageoffood.,that/which,Bigcropfailurescouldleadtoanoverallshortageoffood,_a“foodshock”.,called,23,.,Para.3:Bigcropfailurescouldleadtoanoverallshortageoffood,calleda“foodshock”._(changethephrase“leadto”),Bigcropfailurescouldcauseanoverallshortageoffood,calleda“foodshock”.,resultin,/contributeto,accountfor/,24,.,Para.3:Unfortunately,bigcropfailuresintwoormorebreadbasketscouldleadtowhatresearcherscalla“foodshock”.Thatmeansanoverallshortageoffoodwouldoccur.Extremefoodshocksusedtohappeneverycentury.Ortoputitanotherway,thatsonlyaboutonceinveryfourgenerationsofhumans.However,accordingtostudies,astheclimatewarms,highandlowtemperaturesbecomemoreextreme,andby2050,foodshockscouldoccuraboutonceevery30years.Inotherwords,apersonborninthemiddleofthecurrentcenturymightlivethroughtwoorthreeextremefoodshocksduringtheirlifetime.,Para.3:Foodshockscouldoccurmore_inthefuture.(useoneadverb),frequently/often,25,.,Para.3:Bigcropfailurescouldcauseanoverallshortageoffood,calleda“foodshock”.Foodshockscouldoccurmorefrequentlyinthefuture.(combinethetwosentences),Bigcropfailurescouldcauseanoverallshortageoffood,calleda“foodshock”,_couldoccurmorefrequentlyinthefuture.,which,26,.,Para.4:Makingagricultureefficientisonechoice.Butoneofthemosteffectivewaystofightagainstfoodshocksmightbetocutdownonfoodwaste._(changethesubjectofthesecondsentence),Cuttingdownonfoodwasteisoneofthemosteffectivewaystofightagainstfoodshocks.,(changethephrase“cutdownon”),Reducingfoodwaste,27,.,Para.4:Makingagricultureefficientisonechoice.Reducingfoodwasteisoneofthemosteffectivewaystofightagainstfoodshocks.,Sowhatc