外研版高一英語必修4module6課件.ppt

Listeningandvocabulary,GuesstheChinesemeaningofthewordsaccordingtothepictures.,Volcaniceruption,crater,dustcloud,nuts,galaxy,meteorite,seeds,Somewordsrelatedtodinosaurs,Completethesentenceswiththewordsbelow.adapt,climate,disappear,extinct,evolve,survive,1.The______ofacountryisthetypeofweatherithas.,climate,2.Ifananimalorplantis______,itexistedalongtimeagobutdoesn’texistnow.3.Whenthings_________,theynolongerhappenorexist.4.Whenpeopleoranimals_______,theydon’tdieafteranaccidentoranillness.,extinct,disappear,survive,5.Ifyoucan______tosomething,youcanchangeinordertomakethesituationbetter.6.Whenanimalsorplants______,theychangeanddevelopoveralongperiodoftime.,adapt,evolve,Discussion1.Howmuchdoyouknowaboutdinosaurs?2.Haveyoueverseenanyfilmsorreadanybooksaboutdinosaurs?Whatinterestsyoumost?,3.Inyouropinion,whydinosaursdisappearedfromtheearth?Giveyourreasons.,Openanswers,Workinpairsandanswerthequestionsaboutdinosaurs.(Listenandcheck)1.Dinosaursruledtheearthforabout______millionyears.A.twoB.twentyC.twohundred,2.Theyate____.A.plantsB.meatC.bothplantandmeat3.Theybecameextinct______yearsago.A.600,000B.6millionC.66million,4.Theirnearestrelativestodayare____.A.birdsB.fishC.mammals,,Tapescript,Goodafternoon,andwelcometothisweek’seditionofMysteriesofNature.Today’stopicisabigone-it’sdinosaurs,thosestrangecreatureswhichruledtheearthfornolessthantwohundredmillionyears,someofthemwereplanteaters,otherswereliketheinfamous,,TyrannosaurusRex,carnivoreswholivedoffmeantandwhoattackedthemorepeacefulplanteatingdinosaurs.Notalldinosaurswerebig—somewerethesizeofchickens,andinfacttheclosestthingstodinosaurslivingtodayareactuallybirds.,,Butthemysterywearegoingtotalkabouttodayiswhythedinosaurssuddenlydisappearedexactly66millionyearsago,andtothrowlightonthesubjectwe’veinvitedoneoftheworld’sforemostexpertsonthesubject,fromthePittRiversMuseuminOxford,DrRogerBinfield.,Listentothesecondpartofthetapeanddiscusshowmanyexplanationsaregivenforthedisappearanceofthedinosaurs?,,Five.,1.Ameteoritehittheearth.,2.Theystoppedevolving.,3.Theykilledeachother.,4.Avolcaniceruption.,5.Cancercausedbyradiation.,Listentothetapeagainanddecidewhichstatementsaretrue.Ahugemeteoritemayhavehitallthedinosaurs.2.Perhapsadustcloudmadetheworlddark.3.Ameteoritecausedavolcaniceruption.,4.Thedinosaurshadtoeatseedsandnutstosurvive.5.Perhapstoomuchfightingcausedthedinosaurstodieout.6.Onescientistbelievedthedinosaursbecameillwhentheyatethewrongfood.7.Theremaybedinosaurstodaylivinginothergalaxies.,8.DrBinfieldthinksthecraternearMexicowascausedbyameteorite.,Adiscussionafterlistening,Whichtheorydoyouthinkismostlikely,andwhy?,Students’answers,Tapescript,(PRES=Presenter,DR=DrBinfieldPRES:Goodafternoon,DrBinfield,andwelcometothepragramme.DR:Thankyou.PRES:I’mgoingtocomestraighttothepoint,evenifIthinkthere’snotgoingtobeaneasyanswer.,,Whydidthedinosaurssuddenlydisappear,almostovernight,66millionyearsago?DR:You’reright.There’snoeasyanswertothatquestion,buttherearelotsoftheories.PRES:Suchas?,,DR:Well,probablythemostwidelyacceptedtheoryisthemeteoriteone…PRES:Youmeantheearthwashitbyameteoritefromspace?DR:Yes,that’sright.PRES:Andthedinosaursdiedimmediately?,DR:Notexactly,notallofthem.Themeteoritemayhavehittheearthwiththesuchforcethatitcreatedahugedustcloud,whichstoppedthesunlightfromgettingthrough…sotherewasnolight,noheat,andnofood.PRES:Butotheranimalssurvived?,DR:Yes,smallercreatureslikemammals,whichmayhavesurvivedbecausetheyarenutsandseeds.PRES:Whatothertheoriesarethere?DR:Lots.Thedinosaursmayhavestoppedevolving,andbeenunabletoadapttochangesintheclimate.OrtheymighthaveKilledeachother,,,PRES:Isthatpossible?DR:Ohyes.Theyspentalotoftimeinfighting.Thereagain,itmighthavebeenvolcaniceruptions,notameteorite,whichsentupcloudsofdustandcutoffthelight.Oneveryrecenttheorysaystheydiedofcancer.,,,PRES:Cancer?Youmeanthedinosaursdiedoutbecausetheyfillill?DR:Yes.Asaresultofradiationcomingfromadyingstarsomewhereinourgalaxy…PRES:Thatsoundsfantastic.DR:Well,Ithinkit’sunlikely,butit’snotimpossible.,,PRES:Whichtheorydoyoubelieve?DR:I’dgoforthemeteorite.Ithinkit’sthemostlikelyone.AndintheCaribbeansea,offthecoastofMexico,wherethemeteoritemayhavelanded…,Languagepointsofthelisteningpracticeliveoff:靠…掙錢,過日子Momusedtoliveofftheinterestfromhersavings.,2.Rickdisapprovesofpeoplewhoarelivingoffthewelfare.,媽媽過去靠存款的利息過日子。,里克不贊成靠福利救濟過日子的人。,2.gofor:攻擊,爭取,喜歡,對…適應(yīng),賣得…價錢,Thepresidentialcandidateswentforeachotherinthepapers.,2)Whathesaidaboutyougoesformetoo.,總統(tǒng)候選人在報紙上互相攻擊。,他關(guān)于你的一番話也適應(yīng)于我。,4)Annietendstogoforoldermen.,5)Howmuchdidthatcargofor?,那輛車賣了多少錢?,安妮喜歡年齡較大的男人。,3)Jacksonisgoingforhissecondgoldmedalhere.,杰克遜正在爭取他在這兒的第二塊金牌。,Lookatthewordsandphrasesbelowandchoosethebestexplanation.,Ifsomethingisbackinthenewsitis____.A.inthenewsagain.B.notanimportantnewsstory,2.Ifyouthrowlightonsomethingyou____.A.switchonalightB.makeiteasiertounderstand3.Ifyoucomestraighttothepointyou____.A.saywhatyouwanttosayB.attacksomeone,4.Ifsomethinghappensalmostovernightithappens____.A.quicklyB.inthedark5.Dieoutisusedtospeakabout_____.A.onepersonoranimalB.awholespecies,6.I’dgoforthemeteoritemeans____.A.chooseB.forget7.That’squitesomethingreferstosomething____.A.ordinaryB.extraordinary,