高中英语Unit 21 Lesson 2 Brain Power 2课件北师大版选修7.ppt

Unit21HumanBiologyLesson2BrainPowerMatchthekeywordswiththedefinitions.Keywordsatom,billion,cell,nervecell,organ1.onethousandmillion2.apartofthebodythathasaparticularpurpose,e.g.theheart,theliver3.thesmallestpieceofsththatcanexistalone4.atinypartofthebodythathelpscarrymessagestoandfromthebrain5.aunitoflivingmatterbillionorgancellNervecellatomListeningstrategies:completingatext1.Beforeyoulisten,readthetextandpredictwhatkindofinformationyouneed.rememberyoumayneedmorethanoneword2.Underlinesomeimportantwordsinthetextbeforeeachgap.3.Whileyouarelistening,listenfortheseimportantwords---theinformationyouneedshouldfollowthem4.Youcancompletethegapsusingabbreviationsatfirst—thissavestime.Thenwritetheminfull.Listentoasciencelesson.usethestrategiestocompletethegapsinthissummaryExercise2Thebrainconsistsofgreyand(1)matter.Itweighs(2).Ituses(3)ofthebody’senergy.Itcontainsover(4)whichmakeupnervecells.Thesenervecellsareconnectedbyelectricalimpulses.Therearemorepossibleconnectionsinonebrainthanthereare(5).Scientistshavemappeddifferentareasofthebrainwhichareresponsiblefor(6).Theareaofthebrainrelatedtocontrolling(7)couldbecomparedtominiaturefilmstudios.Oureyesandearssendsignals(8),anditisourbrainthatinterpretsthesesignalsandbuildsupapictureoftheoutsideworld.Scientistshavealsoidentifiedareasresponsiblefordifferentemotions,suchas(9),loveandlaughter.Therearealsodifferentareasfordifferenttypesofthinking,suchaslearningyourownlanguageandlearninga(10)language.Theanswers:(1)white(2)justoverakilo(3)20%(4)100billioncells(5)atomsintheuniverse(6)differentfunctions(7)sightandhearing(8)allthetime(9)fear(10)foreignListentothelessonagainandanswerthesequestions:1.howdoyouthinktheteacherfeelsabouthissubject?2.whatexampledoesheusetoexplainthewaythebraincontrolsdifferentpartsofthebody?3.whatdoeshecomparetoafilmstudio?EnthusiasticAcomputerTheareasofthebrainrelatedtocontrollingsightandhearingListentoastudentphone-inprogrammeaboutrevisingforexamsandcompletethetable:CallerAdviceCallerAdvice1.DanPlanetherevision,Workoutatimetableandsticktoit2.CharlesGetsomeexercise,Don’tdrinkalotofcoffee3.MohammedMotivateyourselfbygivingyourselfrewards,HavetimetorelaxTheanswers:Exercise5:listenagainandcompletethefunctionfilewiththesewords:Must,mustn’t,oughtto,should,shouldn’t,advise,needto,ifIwereyou,havegotto,could,there’snopointin,it’simportantto,whattips,canbecounter-productive,whatGivingandaskingforadvice(1)haveyougotformeandourlisteners?Ithink(2)planyourrevision.Ithinkyou(3)makealistofallthethingsyou’vegottostudy.You(4)workoutwhatyourprioritiesare.(5)doyouthinkIshoulddo?(6),I’dmakesurethatIgotsomeexercise.You(7)getoutofthehouseandgetsomefreshair.Ithinkspendinghoursandhoursinthelibrarywithoutabreak(8).You(9)drinklotsandlotsofcoffee.(10)yougivemesomeadvice?You(11)giveyourselfrewards.Andyou(12)giveyourselfabreak.You(13)justthinkabouttheexamallthetime.(14)doingthat.I’d(15)peopletowatchagoodfilm.Theanswers:1.whattips2.it’simportantto3.should4.needto5.what6.ifIwereyou7.oughtto8.canbecounter-productive9.shouldn’t10.could11.must12.havegotto13.mustn’t14.there’snopointin15.adviseVocabularyphrasalverbsExercise7matchthewordsandexpressionsbelowwiththeverbsnthetext(1-11)appear,discover,lookatindetail,makeanoteof,mention,pass,postpone,start,understandLastmonth,IhadanimportantEnglishexam.Idecidednotto(1)putoffstudying(asInormallydo!)andgotupearlyeverymorningto(2)getdowntoworkstraightaway.I’ma“morningperson”and(3)gotalotoutofmyrevision.Ialwaysbeganby(4)goingoverapracticetestIhaddone-checkingmyanswersand(5)findingoutwhatI’dgotwrong.Ialsotriedto(6)workoutwhyI’dmademistakes.IfIdidn’tunderstandsth.,I’d(7)writeitdownandthen(8)bringitupinclasswithmyteacher.Shewasveryhelpfulandshe(9)wentthroughallofthethingsthatwouldprobably(10)comeupintheexam.Intheend,theexamwasn’tsobadafterallandIthinkI(11)gotthroughit.Mindyou,Istillhaven’thadmyresultsyet!!Theanswers:1.putoff----postpone2.getdownto----start3.get…outof4.goover-----lookatindetail5.findout----discover6.workout----understand7.write…down---makeanoteof8.bring…up----mention9.gothrough----lookatindetail10.comeup----appear11.gotthrough----passExercise8workinpairs.Discussthesequestions:1.Whatnewinformationhaveyoufoundoutaboutbrains?2.Whichschoolsubjectdoyougetthemostoutof?3.DoyoutrytoworkoutyourEnglishmistakesyourselfbeforeyouaskyourteacher?4.Doyouwritedownvocabularylistsorjusttrytoremembereverything?5.Doyouputoffstudyingforanexamoratestuntilthenightbefore?6.Haveyouevergotthroughanexamoratestyouthoughtyou’dfailed?Exercise1onpage83Homework: