外研八下英语Unit 5 Starting out-Understanding ideas《自主学习》课件

自主学习Startingout&UnderstandingideasStartingout1Lookatthepicturesandanswerthequestions.1Whatdoyouknowaboutthesepeople?LiShizhenwroteTheCompendiumofMateriaMedica（《本草纲目》）,animportantbookformedicine.CharlesDarwin’stheoryofevolutioninOntheOriginofSpecies（《物种起源》）changedpeople’sunderstandingofnature.WangZhenyistudiedastronomyandmaths,andexplainednaturalphenomenalikeeclipses（日、月食）.（答案不唯一）2Whatdotheyhaveincommon?Theyareallrelatedtoknowledge-seeking,likestudyingnature,scienceorliterature.（答案不唯一）思考：Doyouknowanyotherfamouspeoplewhohaveexplorednature?Yes.ZhuXistudiednaturalphenomenasuchasfossils（化石）,solarobservations（太阳观测）,astronomy（天文学）,andcalendricalsystems（历法体系）,showingarigorous（严谨的）scientificspirit.（答案不唯一）2Lookatthepictureandanswerthequestions.教材原图Secretsofnature1Whatsecretsofnaturedoyouknow?Iknowthatsomeplantscan“talk”witheachotherbyreleasingchemicalsandcanmakefoodthroughphotosynthesis（光合作用）.（答案不唯一）2Whichonedoyouwanttoexploremore?Iwanttoexploremoreabouthowplants“talk”witheachother.Itsoundsreallyamazing.（答案不唯一）Understandingideas1Lookatthetitleandthepictures.Whatisthepassageabout?Usethewordcloudtohelpyou.unlockdiscoverychangeproveawindowonthepastkeysecretsofnatureThepassageisprobablyaboutusingdiscoveriesasakeytounlockthesecretsofnature,whichcanprovesomething,changeourunderstanding,andactasawindowonthepast.（答案不唯一）2Readthepassageandcheckyouranswer.Secretscaughtintime1Imagineadinosaurinanancientforest.Itisrunningaroundlookingforitsnextmeal.Withanangrycry,itopensitsmouth,raisesitsbeautifulfeather-coveredarms,and...现在分词短语作伴随状语2Wait,feathersonadinosaur?Forhundredsofyears,peoplebelievedthatdinosaurslookedlikehugelizards.长难句分析：这是一个复合句。Forhundredsofyears是时间状语，people是主句主语，believed是主句谓语，thatdinosaurslookedlikehugelizards是宾语从句。Justlookatallthosedinosaursinbooks,filmsandTVshows!However,thankstoapieceofamber,scientistsnowknowthatthisideaiswrong.IntheamberfromSoutheastAsia,theyfoundthetailofadinosaur—withfeathers.幸亏；由于，同义短语有dueto，becauseof等。3Thesebeautifulgoldenstonesquietlykeeppiecesofthepast.Theycantelluswhetherdinosaurshadfeathers,butthat‘snotall.长难句分析：本句是由转折连词but连接的并列复合句。前半句中的主句主语为They，谓语是cantell，us是间接宾语，直接宾语whetherdinosaurshadfeathers是由whether引导的宾语从句；后半句为主系表结构。Theyalsohelpusunderstandthatlifeonearthhasalwayschanged.ApieceofamberfromNorthernEurope,forexample,holdsaflower.Thisspeciesnolongergrowsinthisarea.Butthefindprovesthatitdid35millionyearsago.Inthefuture,ambermayalsohelpusdiscoverifotherspecieshavechangedovertime.4Thankstoamber,morethan300unknownspecieshavebeendiscovered.InapieceofamberfromAfrica,scientistsfound13ants.Researchshowsthattheyareacompletelynewspecies.Scientistsusedtobelievethatantscamefromthenorthernhalfoftheearth.ThediscoveryofthisAfricanspecieshaschangedoldbeliefsaboutthehistoryofants.Whoknowswhetherthispieceofamberwilltellusmoresecrets?5Asawindowonthepast,amberhasbeenmuchstudied.However,it‘sstillnotfullyunderstood.Weshouldputmoreeffortintoresearch.Thenwecanusethiskeytounlockmoresecretsofnature.puteffortinto+名词/动名词对某事投入精力/努力做某事从教材语篇2挖中考设问高频考法推理判断Whatcanweinferfromthepassage?A.Dinosaurslookedlikehugelizards.B.AmbercanonlybefoundinSoutheastAsia.C.Moreunknownspeciesmaybediscoveredinamber.D.Scientistshavefullyunderstoodtheroleofamber.C3Choosewhereyouaremostlikelytoreadthispassage.ainapopularsciencemagazineaboutfindingsinnaturebinanewspaperreportonexhibitionsaboutdinosaurscinasci-fibookabouttravelling160millionyearsintothepastaThinkandshare1WhatdoyoufeelaboutParagraph1?Whydoesthewriterbeginlikethis?2Whataresomeotherwaysforyoutolearnaboutnature’ssecrets?Learningtothinkforquestion1Writershavedifferentwritingstyles.Theyusedifferentmethodstoachievetheirgoals.Thesegoalsincludemakingthetextalive,makingtheirargumentsstrong,gettingreaders‘attention,etc.4Completethediagramwiththecorrectformofthewordsandexpressionsfromthepassage.secretsThankstoalwayschangedprovesgrewunknownantwindowsecretsofnature5Readthesentencesfromthereadingpassageandsummarisethegrammarrules.(a)Forhundredsofyears,peoplebelievedthatdinosaurslookedlikebiglizards.(b)Theycantelluswhetherdinosaurshadfeathers,butthat’snotall.Nowfindmoresentenceswiththesestructuresinthereadingpassage.,”Johntoldhisparents.略6Connectthesentenceswiththat,iforwhether.1Willscientistsfindthereasonfordinosaursdyingout?I‘mnotsure.____________________________________________________________________________________________________________2“Iwanttobeascientistandstudyplants____________________________________________________________________________________________________________I’mnotsureif/whetherscientistswillfindthereasonfordinosaursdyingout.Johntoldhisparentsthathewantedtobeascientistandstudyplants.3IsMrBrowninterestedininsectsorbirds?Emilywantstoknow.______________________________________________________________________________________________________________EmilywantstoknowwhetherMrBrownisinterestedininsectsorbirds.7Completethemessageswiththat,iforwhether.MESSAGEBOARDHello,Iwenttoyourmuseumtoday.YoumissedPlutointhemodelofthesolarsystem.Therewereonlyeightplanetsinit.Idon’tknow1___________thisisamistake.Danielif/whetherDearDaniel,Inthepast,peoplethought2__________therewerenineplanets.However,questionswereraisedabout3__________Plutowasaplanet.In2006,scientistsagreed4__________atrueplanet:ProfOliviaJonesthatwhetherthat1.movesaroundthesun2.isround(ornearlyround)3.canclearthingsinitswayPlutodoesn‘tmeetthethirdpoint.Therefore,wenowbelieve5__________thereareeighttrueplanetsinthesolarsystem.That’swhyPlutoisn‘tpartofthemodel.Pleaseletmeknow6__________youneedmoreinformation.thatif8Workinpairs.Lookatthenoticeandwriteashortpassageaboutexploringnature.UsethewordsandexpressionsfromthereadingpassageandtheUsefulexpressionstohelpyou.Notice

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