现在完成时语法课件.ppt

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1、thePresentPerfectTense现在完成时助动词have(has)+过去分词donepastnowYesterday,wecleanedtheclassroom.Now,theclassroomiscleanbecausewehavecleanedit.用法1强调过去发生的动作对现在产生的结果或影响Ihavecookedthechicken.Youcaneatitnow.Ithassnowed.Soyoucanseeeverythingiswhite.Peoplehavebuiltmanytallbuildings.Theyhav

2、ealreadybeenfriends.1.Myfatherboughtmanybooksformeyesterday.Now,Ihavealottoreadbecause________________________________2.Isawthisfilmlastweek.Now,IknowthisfilmbecauseI_____________________.3.Ididmyhomeworkyesterday.Now,IcangiveittotheteacherbecauseI______________myfatherhasb

3、oughtmanybooksforme.haveseenitbeforehavedoneit.nowpastIbegantoteachEnglishatthisschoolfiveyearsago.IhavetaughtEnglishatthisschoolforfiveyears.用法2：过去发生的动作一直延续到现在。Shebegantoworkin2005.Shestillworksherenow.Shehasworkedatthisschoolfor3years.SincehalfanhouragoTheyhaveplayedfootb

4、allsincehalfanhourago.Theyhaveskatedforalongtime.1.Iamadoctor.IbegantoworkwhenIwas22.Now,Iam26.I________(work)forfouryears.2.WewenttotheUSAlastMonday.TodayisMonday.We_________(stay)intheUSAsincelastMonday.haveworkedhavestayedsinceandforThewomanhasworkedatthisschoolfor2years

5、.(sincetwoyearsago)since2yearsagosince1998sinceshecametotheschool)for+时间段since+时间点for2years/alongtime一、用for和since填空。______threehours______threeo’clock______twodays______yesterdayafternoon______Icamehere______lastSunday_______aweek_______alongtime_______1997______twoweeks___

6、____threeyearsago_______lastmonthforsinceforsincesincesinceforforsinceforsincesince1.They’veknowneachothersince_______.A.1995B.threeyears2.I’vebeeninterestedinChinesefor______.A.lastyearB.oneyear3.Shehasbeenadoctorfor______.A.twoyearsB.twoyearsago4.I’vehadaheadachesince____

7、___.A.IgotupthismorningB.fivehours5.We’vebeenherefor______.A.onehourB.oneo’clockAABAB6.Myparentshaveownedthishousefor______.A.alongtimeB.manyyearsago7.They’vebeeninlovesince______.A.lastspringB.threemonths8.Wehaveknowneachothersince_____.A.oneyearB.lastyear9.--Howlonghaveyo

8、ubeenlikethis?--Since______.A.lastnightB.twodays10.--Howlonghassheworkedhere?--She