Unit9Lesson3EpidemicsExplained课件高中英语北师大版选择性

UNIT9

HUMANBIOLOGYLesson3EpidemicsExplained—ReadingComprehensionCONTENTSPre-readingIWhile-readingIIPost-readingIIISentencesanalysisIVBytheendofthisperiod,youwillbeableto:readandtalkaboutdiseases;makeandconfirmguessesbasedonageneralunderstanding;expressanddiscussideasinagroupsetting;searchonlineforinformationandpresentfindingstotheclass.Pre-readingWhatdoyouknowaboutepidemics?Tickthestatementsthatyouthinkarecorrect.□Anepidemicistherapidspreadofaninfectiousdisease.□Anepidemiccanaffectalargenumberofpeopleinagivenpopulation.□Anepidemiccanoccurwithinashortperiodoftime,usuallytwoweeksorless.□Anepidemicmayspreadtoseveralcountriesorcontinents.□Somecommonviruses,suchasthecommoncold,arenotepidemics.□Anewepidemiccanbeadifferentvariationofavirusthatpeoplecaughtinthepast.While-readingⅠ.

Whatdoesthepassagemainlytellus?A．Thehistoryofepidemics.B．Howtopreventepidemics.C．Whatanepidemicis.D．Thecauses，influenceandpreventionofepidemics.√Activity1

Fast-readingforbasicinformationⅡ.

Matchthemainideawitheachpart.Part1(Para.1)

A．Thewaystosolveepidemics.Part2(Para.2) B．Theepidemicsinhistory.Part3(Paras.3－8) C．Thecriteriaofjudginganepidemic.Part4(Para.9) D．Thedefinitionofanepidemic.Ⅰ.ReadPara.1anddothefollowingexercises.1．Fillintheblanks.Anepidemicisthenamegiventoan__________________thatrapidlyspreadsto_________________peoplewithina_____periodoftime—usually_________orless.2．Whatmaycauseepidemics?Theycanbecausedbyavirusbeingcarriedintoanarea，orchangesinthewaypeoplelive.infectiousdiseasealargenumberofshorttwoweeksActivity2

Careful-readingfordetailsⅡ.ReadPara.2anddothefollowingexercise.WhichofthefollowingisTRUEaboutanepidemic?A．Alargenumberofpeoplemusthavediedfromit.B．Ararediseasewhichcausedonlyfewdeathscan’tbecalledanepidemic.C．Acommoncoldisn’tusuallyseenasanepidemic.D．Whetheradiseasecanbeclassifiedasanepidemicdependsonitsspreadingspeed.√Ⅲ.ReadParas.3－8anddothefollowingexercises.1．Whydopeoplefearbirdflucouldbethenextglobalepidemic?A．Becausebirdfluhascausedthousandsofdeaths.B．Becausebirdfluhasinfluencedcountriesallovertheworld.C．Becausescientistshaveproveditafterstudyingtissuesamples.D．Becausepeoplehavefoundthelinksbetweenbirdfluandthe1918SpanishFlu.√2．Whatisthesimilaritybetween“TheBlackDeath”andtheGreatFluEpidemic?A．Theybothlastedaboutoneyearandahalf.B．Theybothcausedmorethan50milliondeaths.C．Theyhadsimilarvisiblesymptoms.D．TheybothhadaterribleeffectonEurope.3．WhichisTRUEabouttheSpanishFlu?A．ItledtotheendofWorldWarⅠ.B．Itwasspreadquicklybecauseofthewar.C．Itisn’tathreatsince1918anylonger.D．Itisanadaptationofbirdflu.√√4．Whatcanweinferfromparagraph7andparagraph8?A．ScientistsfoundoutthecauseofSARSsoonafteritsoutbreak.B．Morethan8,000peoplediedofSARSin9months.C．OnceapersongotinfectedbyEVD，hischanceofsurvivalwasslim.D．EVDhascaused11,310deathsexactlysince2013.√5．Readthepassagecarefully.Completethetableabouttheepidemicsmentioned.NamePeriodPlacesDeathtollBirdFlu×EpidemicsintheRomanEmpireTheBlackDeath×TheSpanishFlu×SARS×EVDNamePeriodPlacesDeathtollBirdFlu×EpidemicsintheRomanEmpireTheBlackDeath×TheSpanishFlu×SARS×EVDsince1997morethanahundredlives500-550CERomehalfthepopulation1330sAsiaandEurope1918—theendofWWⅠ2002-2003China,Canada,VietnamandSingapore50millionpeople2013-2016WestAfricamorethan11,310deathⅣ.ReadPara.9anddothefollowingexercises.1．Whatshoulddifferentcountriesdotopreventoutbreaksofepidemicsinthefuture?Why?Theyshouldworktogetherbecauseteamworkamongnationsacrosstheglobecansavelives.2．Whichwordhassimilarmeaningtotheword“underline”inthelastparagraph?A．Highlight. B．Explain.C．Mark. D．Describe.√Ⅴ.Readthewholepassageagainanddothefollowingexercises.1．Whereareyoumostlikelytofindthispassage?A．Inanewspaper.B．Inamagazine.C．Inabiologytextbook.D．Onasciencewebsite.2．Whatistheauthor’sattitudetowardsman’sstruggleagainstepidemics?A．Positive. B．Doubtful.C．Critical. D．Uninterested.√√3．Whatwilltheauthorwritenext?A．Howtodosystematicmedicalresearchonepidemics.B．Howtocooperatetofindthecures.C．Otherepidemicsintheworld.D．Solutionstoepidemics.√a.citingideasfromexpertsorauthoritiesb.givingexamplesc.usingdatad.givingdefinitione.usingcomparisonandcontrast4．Whatmethodsdoestheauthorusetodevelopthepassage?Post-reading1．Whatdoesthetitlemeantoyou?Whatdoesthewriterwanttoconveyinthepassage?(Creativethinking)Thetitlemeansthatthepassagewillexplainquestionsaboutepidemics.Theauthorwantstoconveytheinformationthatwearealwaysonourwaytofindanexplanationtoepidemicssoastofindcure.Italsoimpliesthatepidemicsoccurrednaturallyandinevitably.Wecanonlyexplainit，andcannotpreventitorstopitcompletelynow.Activity1

Discussion2．Canwecalladiseaseanepidemicaslongasitaffectsalargenumberofpeople？(Criticalthinking)No.Onlyifaninfectiousdiseasehascausedacertainnumberofdeathscanitbecalledanepidemic.Anepidemicistherapidspreadofan1.__________(infect)diseaseoverashortperiodoftime,2._______(cause)alargenumberofdeaths，thenumberofwhichdiffersfordifferentdiseases.infectiouscausingActivity2

SummaryProfessorJimSmithstudiedthehistoryofepidemics3._________(create)amorepositivefuture.Oneofthe4.________(early)epidemicsonrecordtookplaceinRomeasearlyas500to550CE,5._____killedhalfofthepopulationinthatparticulararea.Thesameepidemiccalled“TheBlackDeath”returnedin6.____1330sinAsiaandspreadquicklytoEurope.Somehundredyearslater，theGreatFluEpidemicbroke7.___in1918，alsoknownastheSpanishFlu，killing50millionpeople.Thiswasconsideredthemostsevereepidemicinhumanhistory.The1997birdfluwhichclaimedover100liveswasan8.__________(adapt)oftheGreatFluof1918.tocreateearliestwhichtheout

adaptationAtthestartofthe21stcenturythereweretwomajorepidemics—SARSandEVD.Themorerecently9.__________(discover)SARSdiseaseinfectedabout8,000people.AccordingtoofficialrecordsEVDhaskilledmorethan11,310peopleinWestAfricaalone.10．________(global)，researchersarecomingtogethertotrytoidentifythecausesandhelptofindeffectivetreatmentsforepidemics.discoveredGloballySentencesanalysis1．Anepidemicisthenamegiventoaninfectiousdiseasethatrapidlyspreadstoalargenumberofpeoplewithinashortperiodoftime—usuallytwoweeksorless.[句式分析]此句是____句。giventoaninfectiousdisease是过去分词短语作____，修饰thename，并与之构成____关系；that引导____从句，修饰________，其中that在从句中作____。[自主翻译]复合定语被动定语disease主语流行病是指在短时间内(通常两周或更短)迅速在大量人群中传播的传染性疾病。2．Withrecentpressreportsdrawingparallelsbetweenbirdfluandkillerepidemicsofthepast，JimSmithlooksatthesometimesdepressinghistoryofepidemicsforcluesabouthowwecancreateamorepositivefuturewithoutepidemics.[句式分析]此句是____句。With...ofthepast为with的复合结构作____，其中宾语pressreports和宾补drawingparallels...构成_____关系；howwecan...为____从句。[自主翻译]

复合状语主动宾语最近有新闻报道，吉姆·史密斯将禽流感和过去致命的流行病作对比，在屡屡令人感到沮丧的流行病史中寻找线索，从而创造一个远离流行病的美好未来。3．Manypeoplefearitcouldbethenextglobalepidemic,especiallyasscientistswhohavegoneintodetailstudyingtissuesamplesfromthebodiesofpeoplewhodiedofthe1918SpanishFluhaveprovedthatbirdfluisamodernadaptati