八下unit8课件

Welcometoourclass!,presentperfecttense:have/has+done助动词（have/has+过去分词）,go,do,write,see,take,break,buy,drink,drive,Competition,1,wentgonediddonewrotewrittensawseentooktakenbrokebrokenboughtboughtdrankdrunk,drovedriven,用法一：,表示完成了的动作对现在造成影响,常与下列词连用（already,yet,just,ever,before,never,recently,sofar,inthepast/lastfewyears),Ihaveeverseentigers.,Wehavealreadyfinishedunit7.,.Jimhasnteatenbreakfastyet.,Makesentencesasmanyaspossible（already,yet,just,ever,before,never,recently,sofar,inthepast/lastfewyears),competition2,用法二：,从过去某一时间开始的状态或动作持续到现在，有可能继续持续下去。,Hehasbeenillforaweek./sinceaweekago.,Ihavebeenasoldierfor2years./since2yearsago.,Shehaslearnttodriveforamonth./sinceamonthago.,Istartedteachingin2002./14yearsago.,IhavetaughtEnglishfor14years.Ihavebeenateacherfor14years.,IhavetaughtEnglishsince2002.Ihavebeenateachersince2002.,IhavetaughtEnglishsince14yearsago.Ihavebeenateachersince14yearsago.,2002,now,WecametoNo2MiddleSchoolin2013./3yearsago.,Wehavestudiedherefor3years.Wehavebeenherefor3years.,Wehavestudiedheresince2013.Wehavebeenheresince2013.,Wehavestudiedheresince3yearsago.Wehavebeenheresince3yearsago.,2013,now,Look.Jeffisplayingtheguitar.,.,Look.Itisrainingoutside.,Itstartedtorain5daysago.Howlong.?,Hebegantoplayit3hoursagoHowlong.?,Hestartedplayingbasketballin1986.,Howlong.?,成龙（JackieChan）wasborn:1954act:1961now,HowlonghasJackieChanacted?,since,Ihavemade5goodfriendsheresince2013.,Ihavemade5goodfriendsheresinceIenteredthemiddleschool.,MsJinhastaughtusEnglishsinceweenteredthemiddleschool.,Since接过去时间点,Since引导时间状语从句,For+时间段,MsJinhastaughtusfornearly3years.,Sincebein接组织getupbeup,have/hasgoneto,have/hasbeento,have/hasbeenin,HehasgonetoChangsha.,HewenttherelastFriday.,Hehas_Changshaforaweek.,beenin,IhavebeentoChangsha.,Iwenttherelastyear.,Ihave_Changshaforaweek.,beenin,去了，未回,去过，已回,去过、来了一段时间,用法三,1.Ihaveever_manyplaces.A.beeninB.gonetoC.beento2.Myfather_Wuhanforbusiness.A.hasbeeninB.hasgonetoC.hasbeento3.Mrs.Wang_Yueyangsince1992.A.hasbeeninB.hasbeentoC.hasgoneto4.Mr.Black_Chinasincethesummerof1998.A.hasbeentoB.hasbeeninC.cameto5.Hisfather_needofmoneyrecently.A.hasgonetoB.hasbeeninC.hasbeento,1.Peter已做完作业，他现在有空了。2.自从来到这所学校，钟老师就教我们数学。2.我父亲以前到过长城。3.她还没有看过那部新电影。4.她去过上海。但没去过香港。5.你这些天上哪儿去了？6.今天下午我不和你去看那电影了，因为我看过了。7.你吃