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1、GrammarandusagePresentperfecttenseandpresentperfectcontinuoustense(2)step1:Learningaims(学习目标)1.Tohandlesomeexercisesaboutpresentperfecttenseandpresentperfectcontinuoustense.2.Todistinguishsometenseslikepresentperfecttenseandsimplepasttense.3.Toacquiresomeskillsindoingexercisesofgrammar.Rea
2、dtheintroductionandcomparisonofthetwotensesonyourlearning-plan.Step2:GuidancetoSelf-studyA.FinishexerciseAonpage11.B.Completethefollowingsentenceswiththerightformoftheverbsgiven.1.Youknow,I____________(look)forajobforthreemonths,andthisismyfirstformalinterview.2.ThisisthefirsttimeI________
3、____(see)thefilm.3.Iamtirednow,forI__________________(work)forfivehourswithoutabreak.4.Hereheis!We_________________(wait)anxiouslyforhimsincelastnight.5.Greatchanges______________(takeplace)inthisvillageoverthepasttenyears.Step3:self-learningtest:havebeenlookinghaveseenhavebeenworkinghaveb
4、eenwaitinghavetakenplaceStep4:Explanationandexpansion（1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作，与现在无关；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响，与现在有关系。Isawthisfilmyesterday.（强调看的动作发生过了。）Ihaveseenthisfilm.（强调对现在的影响，电影的内容已经知道了。)Hehasbeenateacherforfiveyears.Heusedtobeateacherinthisschool.一般过去时的时间状语：yesterday,l
5、astweek,ago,in1980,inOctober,justnow共同的时间状语：thismorning,tonight,thisApril,now,once,before,already,recently,lately现在完成时的时间状语：for,since,sofar,ever,never,just,yet,till/until,uptonow,inthepasttenyears,always典型例题：Myfather______(work)asapainterforaboutfiveyears,butnowheisateacher.workedB.haswork
6、edC.worksD.hadworked注意：for+一段时间未必用完成时，如：Hehasworkedinthisfactoryforfiveyears.HewillstayinLondonfortwoyears.Hewasadoctorinthecountrysidefortenyears,andnowworksinasmallcity.比较练习1.---Where__you__(put)thebook?Ican’tseeitanywhere.---I___(put)itrighthere.Butnowit’sgone.A.did;put;putB.have;put;pu
7、tC.did;put;haveputD.have;put;haveput2.Wehaven’theardfromJaneforalongtime.Whatdoyousuppose_______toher?A.washappeningB.happensC.hashappenedD.happened3.Hello,I____youwereinLondon.Howlong_________here?A.don’tknow;wereyouB.hadn’tknown;areyouC.haven’tknown;areD.did
