8BUint1Grammar1【教学目标】1.认识和了解现在完成时的构成和用法。2.了解现在分词的构成。【重点难点】现在完成时与一般过去时的联系与区别。【教学过程】StepOne:Pre-taskT:DoyourememberEddie?S1:Yes.T:MillieisEddie’smaster.Eddiewasbornfouryearsago.EddiehaslivedwithMilliesincehewasborn.HowmanyyearshashelivedwithEddie?S2:Forfouryears.T:Yeah,EddiehaslivedwithMillieforfouryears.（板书）StepTwo:While-taskTask1：Letthestudentsknowthatthesentencesontheboardallincludethepresentperfecttense.Tellthestudents:Weusethesimplepasttensetotalkaboutwhathappenedatadefinitetimeinthepast,like“Eddiewasbornfouryearsago”.Weusethepresentperfecttensetotalkaboutthingsthatstartedinthepastandstillhavesomeconnectionwiththepresent,like‘EddiehaslivedwithMilliesincehewasborn’.‘EddiehaslivedwithMillieforfouryears.’Task2:Wemakepositiveandnegativesentencesusingthepresentperfecttenselikethis.subjecthave/has+(not)pastparticipleI/You/We/Theyhave(not)moved.He/She/Ithas(not)moved.Weformthepresentperfecttensebyadding‘have’or“has”beforeapastparticiple.e.g.have/has+seen/done/sung/,etc.Task3：Tellthestudenthowtowritethepastparticipleofverbs.1)Weadd‘-ed’toregularverbs.（板书SeePage13）2)Weformtheirregularverbsdifferently.Wedonotadd‘-ed’.AskthestudentstolookatthetableofirregularverbsonPage121.Askthestudentstorememberthepastparticipleofirregularverbs.Task4(A1)：Hereisashortexerciseforstudentstofinish.Askthestudentstocompletethetablewiththecorrectpastparticipleonpage10.Andthenworkouttherule.Task5(A2)：Aftertheshortexercise,askthestudentstocompletethesentencesusingthepresentperfect.Helpthemtocomplete.Askthemnottoforgettheverb‘have’/‘has’.PresentthePresentperfecttensebriefly.Subject+have/has+pastparticipleTask6：Teachthestudentshowtoaskandanswerquestionsusingthepresentperfecttense.e.g.Haveyouarrived?Yes,Ihave./No,Ihaven’t.Hassheleft?Yes,shehas./No,shehasn’t.（板书）Theteacherasksthestudentssomemorequestions.Task7Chattime(A3)：MillieandSandyaretalkingaboutafilmaboutHongKong.Completetheirconversationusingthecorrectformsoftheverbsinbrackets.1)Givethemseveralminutestocompleteit.2)Checktheanswerswiththewholeclass.3)Asksomepairstoactouttheconversation.StepThree:Post-taskI.分清一般过去时与现在完成时Icleanedtheblackboardhalfanhourago（只说明“擦”和其发生的时间)Ihavecleanedtheblackboard.（说明现在黑板是干净的）总结:（1）一般过去时只表示过去的动作或状态,和现在不发生关系。(强调动作发生的时间)现在完成时表示过去发生的某一动作对现在造成的影响,强调的是现在。(侧重动作的结果)2.TorFThetrainhasarrivedjustnow.Thetrainhasjustarrived.ShehasreturnedfromParisyesterday.ShehasreturnedfromParis.总结:(2)一般过去时常与表示过去的时间状语连用,如:yesterday,lastyear,threedaysago,justnow,等。现在完成时不能和表示过去的时间状语连用,其时间状语往往是since…,for…,just,ever,never,before,already,yet,sofar等或无时间状语。3.Fillintheblanks.1.Ａ:I_______(lose)mypen.Canyoulendmeyours?Ｂ:Whydon'tyoubuyone?Ａ:It_______(fall)intotheriveronlyamomentagowhenIwashedmyhands.NowI'vegottofillinaformwithapen.2.A:--Whendidyouloseyourcat?B:--I__________(lose)itlastnight.A:--Wheredidyoufindit?B:--I__________(find)itthegarden.总结:如果询问某事发生的时间，地点只用一般过去时。StepFourHomework
