objectiveTousethePresentPerfectandPastSimpletensesappropriately.1.Sincethen,shehaswonWimbledonandtheUSOpentwice.2.Hastennisevercausedproblemsbetweenthesisters?3.Thesisters’father,Richard,startedtotrainVenusandSerenawhentheywereyoungchildren.4.ThefirsttimeVenusplayedinabigeventwasin1996.haswonHascausedstartedplayed1.Sincethen,she________(win)WimbledonandtheUSOpentwice.2._____tennisever______(cuase)problemsbetweenthesisters?3.Thesisters’father,Richard,______(start)totrainVenusandSerenawhentheywereyoungchildren.4.ThefirsttimeVenus______(play)inabigeventwasin1996.Fillintheblanks.Hascausedhaswonstartedplayed用括号内所给动词的正确形式填空。1.Mr.Brotherisanactor.He___________(appear)inseveralfilmssofar.2.SalesofCDshavegreatlyincreasedsincetheearly1990s,whenpeople_______(begin)toenjoytheadvantagesofthisnewtechnology.3.—Doyouknowourtown?—No,thisisthefirsttimeI_________(be)here.hasappearedbeganhavebeen4.We___________(notmeet)ournewneighborsyet,sowedon’tknowtheirnames.5.—HaveyoubeentoAustralia?—Yes.I________(be)therethreetimes.AndI_______(go)therewithmyuncleforthefirsttime.6.Myfriend,who__________(serve)ontheInternationalOlympicCommitteeallhislife,isretiringnextmonth.haven’tmethavebeenwenthasservedPastSimple:totalkaboutfinishedactionsorpastsituationsandhabits.HealwaysphonedonFriday.Sheclimbedthestairsandwenttoherroom.alwaysphonedclimbedwentPresentPerfect:totalkaboutpasteventsandactivitieswithresultsorconsequencesinthepresent:发生在过去但对现在有影响的动作I’velostmykeys.(Ican’topenthedoor.)(我现在不能开门。）asingleorrepeatedactioninthepast,oftenwithtimeadverbialssuchasoften,sometimes,whenwedon’tknoworarenotinterestedinexactlywhentheyhappened.I’vewalkedacrosstheAmazonjungle.(我何时做的此事无关紧要）现在完成时及其时间状语before,ever,never,seldom,sometimes,often,usually,just,sofar,uptonow，recently1.HaveyoueverbeentoBeijing?2.We’veneverheardthestorybefore.3.Haveyouheardfromyourfamilyrecently?4.Peterhaswrittentwonovelssofar.5.Therehasbeentoomuchrainthisyear.6.Thefriendlyrelationsandcooperationbetweenourtwocountrieshavebeenenhancedinthepastfewyears.7.Uptothepresenteverythinghasbeensuccessful.Lookatthedialoguebelowandcompletetherulewithalreadyoryet.A:HasSerenawonWimbledonyet?B:No,shehasn’twonityet.A:HasshewontheUSOpenyet?B:Yes,shehasalreadywonit.yetalreadyyetyeta)Weuse_______inaffirmativesentences.b)Weuse_____inquestionsandnegativesentences.alreadyyet使用现在完成时的句型1)现在完成时+since+点时间状语(名词、短语、从句,其中从句用一般过去时)2)现在完成时+for+段时间状语3)It/Thisisthefirst/其他序数词/lasttime+that从句中,从句使用现在完成时。I’velivedinthistownsince1990.We’veknowneachothersincewewereatschool.Thisisthefirsttimewehaveseenafilminthecinematogetherasafamily.It’sthethirdtimeBillhasphonedhisgirlfriendthisevening.I’velivedinthistownforages.Ihaven’tseenhimfortenyears.现在完成时表示某一已经完成的动作对现在造成的结果或影响，强调的是现在的情况，所以不能与表示过去的时间状语连用；一般过去时只表示某一动作或状态在过去发生或存在过，与现在不发生联系，它可以与表示过去的时间状语连用。现在完成时与一般过去时的区别:Hehasreadthatbook.(说明他现在知道那本书的内容。)Hereadthatbooklastyear.(只说明他去年读过那本书。)HehasgonetoAmerica.(他现在不在此地，在美国。)HewenttoAmerica.(只说明他去过美国。)1.Tominthelibraryeverynightoverthelastthreemonths.(2011北京)A.worksB.workedC.hasbeenworkingD.h...
