Unit5IntotheUnknownListeningandSpeaking课件高二下学期英语选择性必修四册

Unit5Period3ListeningandSpeaking新课导入Whatwillyoudowhenyoufacetheunknown?1.能通过阅读与单元主题相关的语篇，学习更多与主题相关的词汇和表达，进一步理解面对未知时的正确做法。2.能听懂与探索人类大脑及睡眠奥秘相关的话题内容，能够恰当地运用功能性表达询问信息、解释信息；思考如何主动且理性地探索求真。课堂学习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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somethingabout...?

couldtherebeforit?

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It'sbecause...

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Wouldyoutellusmore

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about...?7Workingroups.Talkabouttheinvestigationsintoano