人教版高中英语必修5课件：Unit1-Workbook

人教版高中英语必修5课件：Unit1Workbook人教版高中英语必修5课件：Unit1Workbook人教版高中英语必修5课件：Unit1WorkbookRobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.TodayheistellinghisfriendZhangWeisomeexcitingnews.Readthequestionsbeforeyoulistentothetape.Thiswillhelpyoutounderstandtheinformation.RobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.TodayheistellinghisfriendZhangWeisomeexcitingnews.Readthequestionsbeforeyoulistentothetape.Thiswillhelpyoutounderstandtheinformation.1Beforeyoulistentothetapediscusswithyourpartnerhowyouwouldfindoutthenameofaflower.Newwordsinthelisteningpassage:

species(种类)，parrot(鹦鹉)，blackbird(画眉类)黑鸟Thisisaboutamanwhowantstonameaflower.Thisisaboutamanwhofindsaflowerandwantstoownit.Thisisaboutamanwhofindsaflowerandwantstoknowifitisanewspeciesofflower.Listentothetapeonceandtellwhatthislisteningpassageisabout.Tofindthenameofanunknownflower,firstyoushouldaskyour________teachertohelpyou.He/Shewilllookinaspecial_____writtenbyCarlLinnaeus.biologybook

Listentothetapeagainandtrytocompletethefollowingpassage.Helivedin________from____to_____.Hewasveryimportantbecausehesolveda_______problemforbiology.Sweden17071778seriousListentothetapeagainandanswerthesequestions.1IfRobertBriggsfindtheflowerinthebook,whatdoesthatmean?2Howwouldheknowifhislilyisanewspecies?3Whydoplantsallhavetwonames?4WhatwastheseriousproblemforbiologythatLinnaeussolved?1IfRobertBriggsfindstheflowerinthebook,whatdoesthatmean?Itmeansthathisflowerhasalreadybeenidentifiedandhasaname.2Howwouldheknowsifhislilyisanewspecies?Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferentitwillbeanewspecies.3Whydoplantsallhavetwonames?Allplantshavetwonamesjustlikepeople.Thefirstisthegroupofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.4WhatwastheseriousproblemforbiologythatLinnaeussolved?BeforeLinnaeustherewasnowayoffindingoutwhetheraplantwasnewornot.Thiscausesproblemsbecausedifferentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.NAMINGAFLOWERRobertBriggs(RB)istalkingtoZhangWei(ZW)aboutanewkindoflilyhehasfound.ListeningtextZW:HelloRobert.What’sthatbookyou’recarrying?RB:Abookthathelpsyouidentifyaflower.ZW:Isee.Whydoyouwantthat?RB:I’vefoundthislily.Itlooksdifferenttome.SoIwanttofindoutifit’snewornot.Ourbiologyteachertoldmethatifit’salreadyknown,I’dfinditinthisbook.ZW:Wow!Soyouthinkyoumayhavefoundanewlily?RB:Ihopeso,butIhavetodosomeresearchfirsttofindoutforsure.ZW:Whathappensifit’sinthebook?RB:Itmeansthatsomebodyelsehasfounditandnamedit.ThenI’llknowitsbiologicalname.ZW:Whatdoyoumeanbythebiologicalname?RB:Actuallylikeusaflowerhastwonames.Thefirstisthegroupofflowersitbelongsto–likeafamilyname.Aroseisonesuchgroup.Thesecondisthekindofflower–likeagivenname.Itmaydescribewhattheroselookslike;forexample,thecolourofanautumnsunset.Togetheryougettheflower’sname,whichRoseAutumnSunset.ZW:Gosh!Whomadethatsystem?RB:AgreatscientistcalledCarlLinnaeus.HelivedinSwedenfrom1707to1778.ZW:Solongago!RB:Yes,andhesolvedaveryseriousproblemforbiology.ZW:Whatwasthat?RB:Beforehimnobodycouldtellifaplantwasnew,astherewasnowayofchecking.There’resomanyplants,yousee!ZW:Yes,Iappreciatethat!Sohissystemisstillused?RB:Indeeditis.Ifmyflowerisn’tinthisbook,I’llknowthatI’vefoundanewkindoflily.ZW:That’sgreat!CanIcomeandhelpyou?Thisresearchsoundsfun.RB:Yes,andifI’mlucky…(fadingout)1ThisisareportonlivingconditionsinEnglandinthenineteenthcentury.Choosetheproperwordsinitscorrectformtoputintothetext.instructneighborhoodpollutedefeathandlesuspectblameseverecluelink...todrawtheconclusioncureUsingwordsandexpressionsEducatedpeopleinthetwenty-firstcenturymayfindithardtobelievethattwohundredyearsagopeopledidnot_____illness___problemsintheenvironment.WeallknowthatinLondondrinking________watercausedlinktopollutedmanydeathsfromcholera.Therewasa____toitscausebecauseitalwaysstartedinthepoor______________.Thenitspreadtothericherareasastheservantspassediton.Manydoctors__________thatpollutedwaterwasto______andcleanwaterwasthe______.clueneighbourhoodsuspectedblamecureJohnSnow’sinvestigationprovedthatthedirtierthewater,themore_______theillness.Sothegovernmentandthedoctors___________________thatwatermustbepurified.They_________peopletoremovethe_______fromthepumpsifthewaterwasinfected.Thuscholerawas_________intheend.instructeddrewtheconclusionseverehandlesdefeatedAnswerkeyforExercise2onpage4212563413TranslatethesesentencesintoEnglish,usingthewordsandphrasesinbrackets.1.除了去公园以外，这个夏天我就没有出过公寓。(apartfrom)Apartfromgoingtothepark,Ilimitmymovementstomyneighbourhood.2.没有足够的证据很难作出结论。(makeaconclusion)Itisdifficulttodrawaconclusionwithoutenoughevidence.3.这些科学实验的结果对于我们非常有价值,它们将有助于我们的研究取得成功。(scientificenquiry;contributeto)Thesescientificenquireswillcontributetothesuccessofourproject.

4.居斯特夫·埃菲尔对他修建铁塔的计划满怀热情,而这座塔使他闻名于世。（GustaveEiffel;enthusiastic;construct)GustaveEiffelwasveryenthusiasticabouthisplantoconstructtheirontower,whichmadehimworld-famous.5.他常提出些不同寻常的计划。你在加入之前要慎重对待。(putforward;becautiousto;joinin)Heoftenputsforwardunusualplans.Sobecautiousaboutthembeforeyoudecidetojoinin.6.谁是第一个反对“地心说”的人？(reject;universe)Whowasthefirstpersontorejecttheideathattheearthwasthecentreoftheuniverse?7.虽然他的写作没什么意思，但弗雷德还是确信自己的作文会得高分。(makesense;positive)Althoughhiswritingdoesn’tmakesense,Fredispositivethathiscompositionwillscoreahighmark.1Chooseappropriateverbstocompletethefollowingsentences,usingthepastparticiple.Explaintheuseofthepastparticipleineachsentence.Usingstructure1.Theywere________toacceptmyidea.2.I'llbe_________tohearwhathehastosay.3.Themayorsaidthathewas_______aboutthe_________riseofthewaterlevelintheriverbed.preparedinterestedworriedcontinued4.Recently________soldiersarehelpingtotakethevictimstosafeareasfromtheflood.5.Mostofthenewspaperseemstobe_________withpopstars.6.Hewas_________ofgoingaloneintotheemptyhouse.arrivedconcernedfrightened2Rewritethesesentencesasonesentenceusingthepastparticipleastheattributeorpredicative.

1.Ifoundthisplateonthefloor.Theplatewasbrokeninpieces.Ifoundthisbrokenplateonthefloor.2.Isawatall,darkandhandsomeman.HisnameisXiaoMing.Isawatall,darkandhandsomemancalledXiaoMing.3.Ilookedatthatmodernabstract(抽象)painting.Itwascoloredinyellowsandgreens.Ilookedatthatmodernabstractpaintingcoloredinyellowsandgreens.4.YesterdayIgottheanswertomyquestion.ItwastheoneIexpected.YesterdayIgottheexpectedanswertomyquestion.5.Sheisoneofmydevotedfriends.Sheisdevotedtomyinterests.Sheismyfrienddevotedtomyinterests.6.OnthedoorstepIfoundalotofbottles.Theyweremarkedingreenink.OnthedoorstepIfoundalotofbottlesmarkedingreenink.7.Wesawmanywindowsinthatroom.Theywereallcracked.Wesawmanycrackedwindowsinthatroom.analyse(分析),pure(纯的),foundations(基础),symbol(符号),

Л(圆周率);sin(正弦),cosin(余弦),geometry(几何),calculus(微积分),mechanics(力学),practical(实用的),topology(拓扑学)Listeningtask1Beforelistening,makealistofallthegreatmathematiciansthatyouknowoforhavelearnedabout.Whatdoyouknowoftheirachievements?2JohnSmithisdiscussingwithZhaoYanghisresearchintothelifeandworkofamathematiciancalledLeonhardEuler(1707–1783).BeforeyoulistentoParts1and2onthetapereadthewordsbelowandlearntopronouncethemcorrectly.puresymbolЛsinecosinetopologyanglediagram3ListentoPart1againandtickthewordsbelowthatEulerintroducedintomathematics.puresymbolЛsinecosinetopologyanglediagram4ListentoPart2againandfillinthechartbelow.Euler’snewbranchofmathematicsWhyEulerisconsideredtobeagreatmathematiciantopology1introducedmanynewsymbolsintomaths2wrotemorebooksthananyonebeforeorsince3discoveredanewbranchofmathematicsEuler'sachievementsExamplesNewsymbols(符号)andtermsOldareasofmathematics

Л,sin,cosinrevisedandanalysedallmathsofhisdayEuler'sachievementsExamplesNewareaofmathematicsOverallimportancetopology

introducedalotofsymbolsintomaths;wrotemorebooksthananyonebeforeAMATHEMATICIAN'SPROBLEMJohnSmith(JS)istalkingtoZhaoYang(ZY)aboutamathematicianwhointerestshim.ListeningtextJS:Doyouknowthatwe’vebeenstudyingEulerinmaths?ZY:Whoishe?I’veneverheardofhim.JS:Well,hewasafamousmathematicianintheeighteenthcentury.Herevisedallthepuremathematicsthatwasknowninhisday.ZY:Thatprobablywasn’tverymuch.JS:You’rewrongthere.Hewrotemorethananyothermathematicianbeforeorsince.ZY:Really!Well,whatdidhedo?JS:Heintroducedalotofsymbolsintomathematicssuchaspiandthetermssinandcosin.ZY:Wow!JS:Andhedidhalfofthisworkwhenhewasblind.ZY:Howdidhedothat?JS:Hetoldhisideastosomeoneelsewhowrotethemdown.Part2ZY:Whatwerehisachievements?JS:Heintroduceanewbranchofmathematicscalledtopology.Ithelpsyouunderstandthingsbyusingdiagrams.Thesubwaymapisagoodexample.Itdoesnottellyoudistancesbutitshowshowstationsconnecttogether.ZY:Howdidhestarttopology?JS:Well,in1735hewasinspiredbyaprobleminthecityofKonigsbergwherehelived.Lookatthemapinyourbook.Konigsberghadariverrunningthroughit.Thecentreisanisland.Astheriverpassestheisland,itbreaksintotwoparts.Sevenbridgeswerebuiltovertheriver.Eulerwonderedifyoucouldwalkaroundthecitysothatyoucrosseachbridgeonlyonce.ZY:Letmetrythat.Itsoundsquitesimpletome.JS:Try,butit’snotaseasyasitlooks.ReadingtaskFINDINGTHESOLUTIONTopology--Eulerpath

Tryyourbesttogooverthewholepointsofeachpicturewithoutliftingyourpencilfromthepaperorgoingoveranylinetwice.AADDBBCCWhat’sEuler’spuzzle?Konigsbergisanislandandthereisariverbreakinghereintotwoparts.“SevenBridgesofKonigsberg”andthefamous“Eulerpath”.Peoplewonderediftheycouldwalkaroundthecitybycrossingthesevenbridgeswithoutgoingoveranyofthemtwiceorgoingbackonhimself,butEulerfoundhecouldn’tcrossallthesevenones.ThisisEuler’spuzzle.Thefirststageinhisresearchistofindtheproblemthathecouldcrosssixofthebridgeswithoutgoingoveranyofthemtwiceorgoingbackonhimself,buthecouldn’tcrossallseven.HowdidEulerprepareforhisresearch?Thesecondstageistothinkofamethod:Hedrewamapanduseddotsandlinestosimplifyhisanalysis.Tryingandobservingoverandoveragain,hefoundageneralrule.Itistopology.Euler’stheoryiscalled“TheEulerpath”,whichisexpressedlikethis:Ifafigurehasmorethantwooddpoints,youcan’tgooveritwithoutliftingyourpencilfromthepageorgoingoveralinetwice.SothegeneralrulethatEulerfoundistheevenpointsandtheoddpoints.Whatarethetheories?ConclusionEuler’stheory(一笔画)可以一笔画只有两种情况：1.没有奇数顶点。2.只有两个奇数顶点。同学们如果对此类问题感兴趣,可登录：

Readthetextandfindouttheanswerstothefollowingquestions.HowdidEulerfindaproblem?What’sthegeneralruletothepuzzle?WhatbranchofmathematicsdidEulerstart?WhenhewalkedaroundthetownandoverthebridgesofKonigsberg,hewassurprisedtofindthathecouldcrosssixofthebridgeswithoutgoingoveranyofthemtwiceorgoingbackonhimself,buthecouldn’tcrossallseven.HowdidEulerfindaproblem?What’sthegeneralruletothepuzzle?WhatbranchofmathematicsdidEulerstart?Ifafigurehasmorethantwooddpoints,youcan’tgooveritwithoutliftingyourpencilfromthepageorgoingoveralinetwice.Hestartedawholenewbranchofmathematicscalled“topology”.Fillinthechartafterreadingthetext.HowmanybridgescouldEulercrosswithoutgoingacrossanyofthemtwice?SixHowdidhetrytosolvethepuzzle?Whatisan“odd”point?Byturningthemapintoadiagram.Onewhichhasanoddnumberoflinesgoingtoit.HowmanyoddpointsarethereinFig2onpage45?HowmanyoddpointsarethereinFig4onpage45?FourTwoWhatisEuler’srule?DidhisruleworkwithFigs2and4?Ifafigurehasmorethantwo