【省公开课课件】选修七Unit3 Under the Sea

Unit3UndertheSeaReadingOldTomtheKillerWhaleThereareallkindsofmarineanimalsunderthesea.

Doyouknowaboutwhales?Whalesarehuge,intelligentseamammals.Theybreatheairthroughblow-holesintolungs.Whaleshavesmooth,shiny,streamlined(流线型)bodiesthatmoveeasilythroughthewater.Whatisawhale?Therearetwotypesofwhalesalivetoday:Classificationofwhalestoothedwhales(齿鲸类)andbaleenwhales(须鲸类).Killerwhales(虎鲸)belongtotoothedwhales,whoarethekingandthebiggestcarnivore(食肉动物)ofthesea,killingallkindsofanimalsinthesea,eventhehugebluewhale,liketigersonland,workinginateam.Baleenwhalesarewhalesthathavenoteeth.Thereareseveralspeciesofbaleenwhalessuchasthebluewhale（蓝鲸）,thehumpbackwhale（座头鲸）.Killerwhalesareattackingabaleenwhalewithwhalerswaitingbyintheirboat,harpoonattheready.Whatdoyouthinkishappeningbetweenthem?baleenwhalekillerwhalesKillerwhalesareattackingabaleenwhalewithwhalerswaitingbyintheirboat,harpoonattheready.Reading

theKillerWhaleOldTomwritercareerwritingstyletimeplacemaincharacterBackgroundClancya

whaleranecdotesatthebeginningofthe20thcentury

inAustraliaWhalers,killerwhalesandbaleenwhalesTask1Briefintroductionofthepassage1.Thetextmainlytellsus_________.A.thatthekillerwhaleswereeasilytrainedandcontrolled.B.howthekillerwhaleshelpedthewhalerscatchthebaleenwhalesandhowOldTomprotectedandsavedJames.C.whythekillerwhaleskilledthewhalesfortheirownfood.D.howthekillerwhalesdraggedthewhalesunderthewater.Task2Choosethebestanswer.2.WhydidGeorgebeatthewaterwithhisoar?A.TofrightenthewhalesawayB.TocallbackOldTomtoleadthewayC.ToattracttheattentionofhugewhalesD.Tosendsignalstootherwhales.3.Whatdoestheword“it”inthesentence“Heletitgoandtheharpoonhitthespot”referto?A.Thewhale. B.Theboat.C.Theharpoon. D.Thekiller.4.Wheredoesthepassageprobablycomefrom?A.Anadvertisement.B.Abookreview.C.Amagazine.D.Atravelguide.

Workingatthewhalingstation,Ihadwitnessedwhaleskilledmuchtimeswithmyowneyes.AttheafternoonIarrivedatthestation,asIwassortingoutmyaccommodation,Ihearaloudnoisecomingfromthebay.Runningdowntotheshoreintime,andwesawanenormousanimaloppositeus.Aswedrewclose,Icouldsawawhalebeingattackedbypackofotherkiller.Beingbadwounded,thewhalesoondied.Verysoon,itsbodywasdraggingbythekillersdownintothedepthsofthesea.Task3Proofreading增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。删除：把多余的词用斜线（＼）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。

Workingatthewhalingstation,Ihadwitnessedwhaleskilledmuchtimeswithmyowneyes.AttheafternoonIarrivedatthestation,asIwassortingoutmyaccommodation,Ihearaloudnoisecomingfromthebay.Runningdowntotheshoreintime,andwesawanenormousanimaloppositeus.Aswedrewclose,Icouldsawawhalebeingattackedbypackofotherkiller.Beingbadwounded,thewhalesoondied.Verysoon,itsbodywasdraggingbythekillersdownintothedepthsofthesea.Task3ProofreadingmanyOnheardclosersee∧akillersbadlydragged

Therewasoneday__1___wewereoutinthebayduringahuntandJames_____2_____(wash)offtheboat.Theseawasroughthatdayanditwasdifficult____3____(handle)theboat.ThewaveswerecarryingJamesmuch___4____(far)awayfromus.FromJames'sface,Icouldseehewasterrifiedof_______5________(abandon)byus._6__tookoverhalfanhourtogettheboatback__7__James,andwhenwe____8_______(approach)him,IsawJamesbeing___9___(firm)heldupinthewaterbyoldTom.Icouldn'tbelievemyeyes.Therewere__10____(shout)of”Welldone,OldTom”and”ThankGod”aswepulledJamesbackintotheboat.AndthenOldTomwasoffandbacktothehuntwheretheotherkillerswerestillattackingthewhale.Task4Fillingintheblanks

Therewasoneday_____wewereoutinthebayduringahuntandJames__________(wash)offtheboat.Theseawasroughthatdayanditwasdifficult________(handle)theboat.ThewaveswerecarryingJamesmuch_______(far)awayfromus.FromJames'sface,Icouldseehewasterrifiedof_______________(abandon)byus.___tookoverhalfanhourtogettheboatback____James,andwhenwe___________(approach)him,IsawJamesbeing______(firm)heldupinthewaterbyoldTom.Icouldn'tbelievemyeyes.Therewere______(shout)of”Welldone,OldTom”and”ThankGod”aswepulledJamesbackintotheboat.AndthenOldTomwasoffandbacktothehuntwheretheotherkillerswerestillattackingthewhale.Task4Fillingintheblankswhenwaswashedtohandlefarther/furtherbeingabandonedIttoapproachedfirmlyshoutsTheseahasalwaysinterestedman.Fromithecangetfood,minerals,andtreasure.1Buthecouldnotgofarbeneathitssurface.2However,heisnotafish.Hemustbreatheair,sohecan’tstayunderthewater’ssurfaceforanylengthoftime.Toexploredeepwater,manfacesevenmoredangersandproblems.

Adiverwhowantstostayunderwaterformorethanafewminutesmustbreatheairoraspecialmixtureofgases.3Hecancarryatankofaironhisbackandbreathethroughanoseandamouthpiece.Waterweighs800timesasmuchasair.Tonsofwaterpushesagainstadiverdeepinthesea.4Whenadiverisundergreatpressure,hisbloodtakesinsomeofthegaseshebreathes.Asherisestosurface,thewaterpressurebecomesless.Ifthediverrisestooquickly,thegasesinhisbloodformbubbles(气泡).Thediveristhensufferingfromthebends(潜水病).Thebendscancauseadivertodoubleupinpain.5A.Consequentlyhisbodyisundergreatpressure.B.Scientistsaretryingtofindmoreaboutthesea.C.Forthousandsofyears,hecouldsailonit.D.Theycanevenkillhim.E.Hecanwearadivingsuitandhaveairpumpedtohimfromabove.F.Thewaterpressurecancauseadivertobreathewithdifficulty.G.Manwantstoexploredeepintothesea.

Task5ExtensivereadingTheseahasalwaysinterestedman.Fromithecangetfood,minerals,andtreasure.1Buthecouldnotgofarbeneathitssurface.A.Hisbodyisundergreatpressure.B.Scientistsaretryingtofindmoreaboutthesea.C.Forthousandsofyears,hecouldsailonit.D.Theycanevenkillhim.E.Hecanwearadivingsuitandhaveairpumpedtohimfromabove.F.Thewaterpressurecancauseadivertobreathewithdifficulty.G.Manwantstoexploredeepintothesea.

C逻辑线索(转折)词汇复现（同词、反义词）代词2However,heisnotafish.Hemustbreatheair,sohecan’tstayunderthewater’ssurfaceforanylengthoftime.Toexploredeepwater,manfacesevenmoredangersandproblems.E.Hecanwearadivingsuitandhaveairpumpedtohimfromabove.F.Thewaterpressurecancauseadivertobreathewithdifficulty.G.Manwantstoexploredeepintothesea.

代词同词复现逻辑线索(转折)G空格在句首，要注意其概括性含义

Adiverwhowantstostayunderwaterformorethanafewminutesmustbreatheairoraspecialmixtureofgases.3Hecancarryatankofaironhisbackandbreathethroughanoseandamouthpiece.C.Forthousandsofyears,hecouldsailonit.D.Theycanevenkillhim.E.Hecanwearadivingsuitandhaveairpumpedtohimfromabove.F.Thewaterpressurecancauseadivertobreathewithdifficulty.代词同词复现E

...Hecancarryatankofaironhisbackandbreathethroughanoseandamouthpiece.Waterweighs800timesasmuchasair.Tonsofwaterpushesagainstadiverdeepinthesea.4A.Consequentlyhisbodyisundergreatpressure.B.Scientistsaretryingtofindmoreaboutthesea.C.Forthousandsofyears,hecouldsailonit.D.Theycanevenkillhim.A空格在段尾，要注意总结性词汇逻辑线索(因果)Whenadiverisundergreatpressure,hisbloodtakesinsomeofthegaseshebreathes.Asherisestosurfa