Unit5IntotheUnknownListeningandSpeaking課件高二下學(xué)期英語選擇性必修四冊

Unit5Period3ListeningandSpeaking新課導(dǎo)入Whatwillyoudowhenyoufacetheunknown?1.能通過閱讀與單元主題相關(guān)的語篇，學(xué)習(xí)更多與主題相關(guān)的詞匯和表達，進一步理解面對未知時的正確做法。2.能聽懂與探索人類大腦及睡眠奧秘相關(guān)的話題內(nèi)容，能夠恰當?shù)剡\用功能性表達詢問信息、解釋信息；思考如何主動且理性地探索求真。課堂學(xué)習(xí)1Readthepassageandanswerthequestions.Payattentiontothewordsandexpressionsinbold.Whensomethingstrangeorunfamiliarhappens,theflightinstinctcankickin.Often,makingaquickgetawayisasensibleandunderstandablenaturalresponse,datingbacktoatimewhenourancestorswererunningfortheirlivesfromdangers,suchaswild

animals,lightningandfire.Sowhileyoumaybetemptedtocheckoutastrangeobjectortotestthewatersofanewsituation,itcanbesafertosteerclearoftheunfamiliar.However,noteveryonechoosestofollowthisinstinct.Insteadofretreatingtotheircaves,someofourancestorschosetosubduetheirfearsandpursuetheunknown-andthiscuriosityledthemto,forinstance,discovertheuseoffire.Inmorerecenttimes,Norwegianexplorer,RoaldAmundsenenduredoneofthemosthostileenvironmentsonEarthwhenhesetoutintounchartedterritorytoreachtheSouthPole.Thesereactionshelphumankinddelveintotheunknownandadvancetowardsamoreprogressiveandcivilisedsociety.Ofcourse,explorationdoesn'thavetomeanblindlythrowingourselvesintotheunknown,andit'sneverwrongtothinktwicebeforetakingaction.Whilethereisnoneedforustoshrinkfromnewsituations,weshouldalwayslookintothingsfirstandconsiderouroptions.1Whatistheflightinstinct?Whydosomepeoplereactthatwayinthefaceoftheunknown?2Whatotherreactionscouldpeoplehavewhenfacingtheunknown?Flightinstinctisourinstinctivereactiontogetawayfromastrange,unfamiliarordangeroussituation.Somepeoplereactthatwayinthefaceoftheunknownbecauseitisasensibleandunderstandablenaturalresponse.2Putthewordsandexpressionsintothetable.Addanymoreyoucanthinkof.makingaquickgetaway,

runningfortheirlives,

checkout,

testthewatersof,

steerclearof,

retreatingto,

subdue,

endure,

setoutinto,

delveinto,

thinktwice,

takingaction,

shrinkfrom,

lookinto,

considerouroptionsAvoidingExploringOvercomingHesitatingmakingaquickgetaway,runningfortheirlivesfrom,steerclearof,retreatingto,shrinkfromcheckout,testthewatersof,setoutinto,delveinto,takingactionsubdue,endurethinktwice,lookinto,considerouroptionsReadthepassageandanswerthequestions.31Whatfunctionsofthebrainarementionedinthepassage?2Whatisthecurrentresearchsituationconcerningthebrain?3Doyouknowanyotherinterestingfactsaboutthebrain?Sharethemwiththeclass.Thebrainfunctionsmentionedincludeitsbeingthecentreofthenervoussystemandcontrollingmostofthebody’sactivities,includingvision,memory,speechandrhythm.4Listentotheinterviewandchoosethetopicdiscussed.1Methodstokeepthebrainhealthyandactive2Sleep-relatedmysteries3Waysofimprovingsleepquality4Methodsofinterpretingdreams5TheoriesDrLong’sCommentsThebrainneedstimeto1___________.Recentstudiesprovethatourbrains2____________duringsleep.Thebrain3___________whenwe'reawake.Itneedssleepto4___________.Thereisn't5___________toconfirmthis.Itmightnotbe6____________forsleep.7____________inthebrainwhilewe'reawake,andthebrainreflectsonthemand8________________inourdreams.Alotofresearchhasbeenconducted,butwestillcan'tprovethat9_____________.OtherunansweredquestionsWhydowe“see”ourdreams?10___________Answers:

1restanddomaintenance2remainactive3makeslotsofpoisonouschemicals4removethesechemicals5enoughdata6themostimportantreason7Newconnectionsareformedbetweendifferentparts8usesthemtoformnewmemories9sleepisnecessarytothisfunction10Whydosomepeopledreamincolourandothersdon't?Nowusetheinformationinthetabletogivealecturetotheclass.Dofurtherresearchifnecessary.6Completetheboxeswiththeexpressionsfromtheinterview.ExplainingAskingformoreinformation?Couldyoutellussomethingabout...??Whatotherreasonscouldtherebeforit??Wouldyoutellusmoreabout...??It'sbecause...?...provethat...

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Couldyoutellus

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Whatotherreasons

somethingabout...?

couldtherebeforit?

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It'sbecause...

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Wouldyoutellusmore

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...provethat...

about...?7Workingroups.Talkabouttheinvestigationsintoano