人教版高中英语教案必修五Unit3LifeinthefuturePeriod5

1Period5GrammarTheGeneralIdeaofThisPeriodThisisthefifthperiod,whichwillcenteronthegrammar:usingthepastparticipleastheadverbialandattribute.Atthebeginningoftheperiod,theteachershouldoffersometimetogooverwhatthestuLatertheteacherhadbetterpresentsomesentencescontainingthepastparticipleusedastheadverbialandattributeonpurposebyaskingthestudentstodosomeexercises.Getthestudentstofindallthesentencescontainingthepastparticipleinthetwopassages.Afterfindingthem,theteachercanaskthestudentstoanalyzethemandunderstandthefunctionofthepastparticipleinthosesentences.Whiledoingit,thestudentsshouldbegivensomeexplanationabouthowtouseThefollowingstepistopractisemoreaboutthegrammar.Theteachershouldarrangesomeactivitiescarefullyandcreatively.Firstletthemdosomesimpleexercises.Forexample,combinethetwosentencesusingthepastparticipleastheadverbialandattribute.ThenaskthemstudentstoBesidesthat,theteachershouldhelpthestudentstoreviewtheotherusagesofthepastparticiple.Intheend,letthemwriteapassageusingthApartfromtheusageofthepastparticiple,theteacherhadbettermakethestudentsunderstandthedifferencebetweenthepastparticipleandthepresentparticiple.Inordertohavethestudentsmasterit,theteachershouldchoosesomeexercisestosupplythestudentswithsomeTeachingImportantPointsTeachingDifficultiesTeachingAidsMulti-ThreeDimensionalTeachingAimsKnowledgeAimsTolearnaboutthepastparticipleusedastAbilityAimsTousethepastparticipleusedastheadverbialandtheattributefreelyandproperlyinEmotionalAimsMakethemknowonlybydoingmoreTeachingProcedureT:Doyoustillrememberwhatyoulearnedinthisunit?Pleasesaysomethingaboutthelifeinthefuture.S:Th2S:PeopleinthefuturewilltravelbS:Peoplewillsufferfromthelackoffreshair,buttheywillwearmaskstofeelmuchbetter.ST:Good.Nowpleaseanswersomequestionsaccordingtothepassage:IHaveSeenAmazingThings.S:Hisfirstvisitwastoaspacestationconsideredthemostmoderninthispartofspace.Itisanenormousroundplate,whichspinsslowlyinspacetoimitatethepulloftheearth’sgravity.Inside,itisdividedintozoneswithextraordinarilydifferentatmospheresandgravities.TheretheT:Excellent.WouldyoupleasedescribethefriendliestcrS:Thefriendliestcreaturesarethemu-mu,afamilyfromthePleiadesgroupofstars.Theycanseeinthedarksotheyliveinanareawithoutlightofanykind.TheyhaveassistedinthediscoveryofplanetsroundthefourthstarinthePleiadessystem.Theyspeakinwhispersandeatfoodthatcontainscarbon.Theyhavesixarmsandoneshell-coveredleg.TheymovedforwardbyS:ThemostinterestingcreaturesarethetinydimpodsfromagalaxynearNGC6240.Theyskiparoundthepipesandbetweenthewoodenwallsofthespacestation.Theyrequirethesameatmosphereashumansandaregreatengineers.Theywillbeabletotravelmanylightyearsawayfromtheearth.Theyalsocanproduceaspecialliquidfromtheirbodies.Theyarenoteasytotalkto,becauseyouhavetousealanguage-changertohelpandtheyshoutloudlyinyourear.Theyareverysmallwithmanyarmsandlegs.TheyarepurpleorblueandthecolorchangesdependingontheStep3PresentationWorriedT:Inthissentencethepastparticipleisusedasanadverbialphrase.Itisawayofjoiningtwoclausestogether:AsIwasworriedaboutthejourney,Iwasunsettledforthefirstfewdays.Nowpleasepickoutthreemoresentencesfromthereadingpassageswithpastparticiplesusedastheadverbial.YouareallowedtofindasmanysentencesaspossibS:Well-knownfortheirexpertise,hisparents’companynamed“FutureTours”transportedmeS:ConfusedbythenewsurroundiS:ExhaustedS:Describedasanenormousroundplate,itspinsslowlyinspacetoimitatethepulloftheT:Good.Youjustfoundallthesentencescontainingthepastparticiplesusedastheattributes.Canyoufindthesentenceswithpastparticiplesusedasattributes?Finishitintwo(Twominuteslater,letthestudentsreadthesesentenceswithpastparticiplesasthe3attributes.)S:MyfirstvisitwastoaspacestationconsideredS:Well-knownfortheirexpertise,hisparents’companynamed“FutureTours”transportedmeS:SoonIwasbackonmyfeetagainandfollowedhimtocollectahoveringcarriagedrivenS:TomorrowyouwillbereadyforsomevisitsorganizedS:Themu-mudrinkastrangemixtureofcarrotjuiceandcocoa,whilethedimpodsdrinklemonademixedS:Theymoveforwardbyslowlyshakingfromsidetosideonashell-Step4PractisingT:Fromthesentencesmentionedjustnow,whatdoyouknowabouttheusageofpastS:Weusepastparticiplesasattributeswhenwewanttojointwoclausestogether,whichisT:Yes.过去分词作定语,在语态上,表被动;在时间上,表示动作已经发生或完成,与它所修饰的名词有逻辑上的动宾关系。过去分词作定语时,所修饰的名词在逻辑上相当于被动句中的主语,过去分词相当于谓语。过去分词作定语表示动作在谓语动作之前发生,已经完成并具有被动意义。有时也不表示时间性。作定语的过去分词一般由及物动词变来,因为只有及物动词才有被动意义。例如:Heisateacherlovedbyhisstudents.他是个很受学生爱戴的老师。也有用不及物动词的过去分词作定语的情况,一般作前置定语,它不表示被动意义,只表示主动意义,强调动作完成。不能像及物动词的过去分词那样放在名词后面作定语。例如:fallenleaves落叶retiredworkers退休工人therisensun升起的太阳S:SoonwelostsightofthatfamousastronomercalledS:IlikethatoldprivatehousebuiltofwoodanT:Theroomiscompletelyempty.Theroomisconnectedtotherestofthehousebyalongpassage.S:TheroomconnectedtotherestofthehousebyT:Thequeenwassittinginaroyalcarriage.ThecarriagewasT:Thecastleisunderrepair.ItwasbT:Justnowwepracticedpastparticiplesusedasattributes.Therearestillsomenoteswe4注意下面过去分词作定语的几种情况1.单个的过去分词作定语一般放在被修饰的名词之前。例如Weneededmuchmorequalifiedworkers.我们需要更多的合格工人。Myfriendisareturnedstudent.我的朋友是个归国的留学生。单个分词也可以作后置定语,用以强调