Unit 5 Meeting your ancestors 教案3（人教版高中英语选修八)6页

云南省陇川县第一中学高中英语《Unit5Meetingyourancestors》语言学习教案新人教版选修8Teachinggoals教学目标1.Targetlanguage目标语言Grammar:Presentperfectcontinuoustense.2.Abilitygoals能力目标Enablethestudentstousethepresentperfectcontinuoustense.3.Learningabilitygoals学能目标Helpthestudentslearnhowtousethepresentperfectcontinuoustense.Teachingimportant&difficultpoints教学重难点Howtousethepresentperfectcontinuoustense.Teachingmethods教学方法Explanationandpractice.Teachingaids教具准备Aprojectorandacomputer.Teachingprocedures&ways教学过程与方式StepⅠRevisionCheckthehomework.Letsomestudentsreadtheirwork.Asampleversion:AbriefintroductiontotheZhoukoudianCavesZhoukoudianisasmallvillagesituatedabout50kmsouthwestofBeijingIn1928,DrC.C.Young,afamousChinesepaleontologist,andWenzhongPei,ayoungChinesegeologistjoinedtheexcavation.TwolowerjawsofPekingManwereunearthedinthisyear.Tomaketheexcavationmoresuccessful,DrWengandDrBlackestablished“CenozoicResearchLaboratory”in1929.ThePekingManSitealsoprovidesthemoreprecisescientificdataforthestudyoftheevolution,behaviour.OnthewesternsideofZhoukoudianVillage,therearetwoparallelhills.TheoneontheeastislowerandcalledDragon-boneHill.Zhoukoudianisarelicofprimitiveculture,48kilometerssouthwestofdowntownBeijing,whereLonggushan(dragonskeletonmountain) isstanding.Severaldecadesago,localfarmersminedlimestoneinZhoukoudian,cameuponsomebonefossilsandcalledthem“theDragonBones”.Zhoukoudianbecameknownas“DragonBoneMountain”.Drugstorespurchasedthebonesasamedicalingredient.Thenewsaboutthe“magicbones”drewattentionofscientists.In1929theselimestonecavesbecameworldfamouswiththediscoveryofaskullandtwoteethdatingback200,000to500,000years.TheywerenamedPekingman.ThehistoricalandculturalvalueoftheZhoukoudiansitehasbeenacknowledgedbyitslistingasaWorldHeritageSiteinDecember1987attheeleventhsessionofUNESCO.StepⅡLead-inAskthestudentstopointoutthesentencesthatcontainthestructureasin“Wehavebeenexcavatinghereformanyyears...”Samplesentences:1.Wehavebeenfindingthebonesoftigersandbearsinthecavesandwethinktheseweretheirmostdangerousenemies.2.Wehavebeenexcavatinglayersofashalmostsixmetersthick,whichsuggeststhattheymighthavekeptthefireburningallwinter.3.Yes,indeed,asthebotanicalanalyseshavebeenspecificallyshowingus,allthefieldsaroundhereusedtobepartofalargeshallowlake.T:Whatisthesamestructureinthesesentences?S:“have/hasbeendoing...”T:Yes,inthisunit,wewilllearn“have/hasbeendoingsth.”Thatisthepresentperfectcontinuoustense.StepⅢExplanationPresentPerfectContinuous[HAS/HAVE]+[BEEN]+[V+ing]Examples:Ihavebeenwaitingherefortwohours.ShehasonlybeenstudyingEnglishfortwoyears.Note:WhenyouareusingaverbtensewithmorethanonepartsuchasPresentPerfect Continuous(hasbeenstudying),adverbsoftencomebetweenthefirstpartandthesecondpart(hasonlybeenstudying).Use1DurationfromthePastuntilNowT:WeusethePresentPerfectContinuoustoshowthatsomethingstartedinthepastandhascontinuedupuntilnow.“forfiveminutes”,“fortwoweeks”,and“sinceTuesday”arealldurationswhichcanbeusedwiththePresentPerfectContinuous.Lookatthefollowingexamples.Showthefollowing.Theyhavebeentalkingforthelasthour.Shehasbeenworkingatthatcompanyforthreeyears.JameshasbeenteachingattheUniversitysinceJune.Use2Recently,LatelyT:YoucanusethePresentPerfectContinuouswithoutadurationsuchas“forfiveminutes”,“fortwoweeks”,and“sinceTuesday”.Withoutthedurations,thetensegivesamoregeneralmeaningof“lately”.Weoftenusethewords“lately”or“recently”inthesentencetostrengthenthismeaning.Nowreadtheseexamples.Showthefollowing.Recently,Ihavebeenfeelingreallytired.Shehasbeenwatchingtoomuchtelevisionlately.Maryhasbeenfeelingalittledepressed.ImportantT:RememberthatthePresentPerfectContinuoushasthemeaningof“lately”or “recently.”IfthePresentPerfectContinuousisusedinaquestionsuchas“Haveyoubeenfeelingalright?”,itsuggeststhatthepersonlookssickorunhealthy.Aquestionsuchas“Haveyoubeensmoking?”suggeststhatyoucansmellthesmokeontheperson.Usingthistenseinaquestionsuggestsyoucansee,smell,hear,orfeeltheresultsoftheaction.Itispossibletoinsultsomeonebyusingthistenseincorrectly.Important:Non-ContinuousVerbs/MixedVerbsT:ItisimportanttorememberthatNon-ContinuousVerbscannotbeusedinanycontinuoustenses.Also,certainnon-continuousmeaningsforMixedVerbscannotbeusedincontinuoustenses.ToexpresstheideaofPresentPerfectContinuouswiththeseexceptionverbs,youmustusePresentPerfect.Herearesomeexamples.Showthefollowing.Samhasbeenhavinghiscarfortwoyears.(NotCorrect)Samhashadhiscarfortwoyears.(Correct)Active/PassivePresentPerfectContinuousExamples:Recently,Johnhasbeendoingthework.(Active)Recently,workhasbeenbeingdonebyJohn.(Passive)Note:PresentPerfectContinuousisrarelyusedinitspassiveform.StepⅣConsolidationShowtheseexercisesonthescreen.1.Hi,Tracy,youlooktired.I’mtired.I____inthelivingroomallday.A.paintedB.hadpaintedC.havebeenpaintingD.havepainted2.Thereissomuchsnowthesedays,isn’tthere?Yes,it____forafewdays.A.wassnowingB.hasbeensnowingC.hadbeensnowingD.snowed3.Althoughthesescientists____ontheprojectfornearlyfouryears,Idon’tknowhowlongitwilllast. A.havebeenworkingB.hadworkedC.wereworkingD.areworking4.Nowthatsheisoutofjob,Lucy____goingbacktoschool,butshehasn’tdecidedyet.A.hadconsideredB.hasbeenconsideringC.consideredD.isgoingtoconsider5.Thelittleboyisdirtyfromheadtofootbecausehe____inthemudallmorning.A.hasplayedB.isplayingC.hasbeenplayingD.wasplayingKey:1.C2.B3.A4.B5.CStepⅤPracticeAskthestudentstoworkinpairs,andtaketurnstoreadthestatementandturnitintoaquestionusingthepresentperfectcontinuoustense.1.S1:Samhasjustfinishedlearningtoflyanairplaneonsix-monthcourse.(Howlong)S2:Howlonghaveyoubeenlearningtoflyanairplane,Sam?2.S1:Heswamtillhefeltverytired.Hehasjuststeppedoutoftheswimmingpool.(Howalong)S2:Howlonghashebeenswimmingintheswimmingpool?3.S1:SallyandZhouXinhavebeenbusyallday.(What)S2:WhathaveSallyandZhouXinbeendoingallday?4.S1:Theyhavearguedeachotherforyearsaboutthebestwaytogrowpotatoes.(What)S2:Aboutwhathaveyoubeenarguingwitheachotherforyears?5.S1:JailYangusesaparticularkindofwashingpowderandhisclotheshavealwaysbeencleanandsoft.(What)S2:Whatkindofwashingpowderhaveyoubeenusingtomakeyourclothescleanandsoft,JailYang?StepⅥHomework Wordstudyexercisesareassignedashomework.Studentsareaskedtofinishthemafterclass.Andaskthestudentstolearnusefulwordsandexpressionsbyheartandpracticethem.Finishexercises1and2onpages40and79.