How long have you been collecting shells 八年级下册.ppt

Howlonghaveyoubeencollectingshells?,Unit6,SectionAPeriod1LiuXinlanApril21st,2008,shell,collectshells,收集贝壳,Newwords,Marathon马拉松,skate,apairofskates,Sheisskating.,Sheisaskater.溜冰者,n.溜冰鞋v.溜冰/滑冰,Whatishedoing?,Heisflyingakite.,kite,stamp,集邮,collectstamps,raisemoneyforcharity为慈善事业筹集钱,Newwords,shell,收集贝壳,collectshells,贝壳/壳,Marathon,马拉松,skate,n.溜冰鞋v.溜冰/滑冰,skater,溜冰者,kite,风筝,flyakite,集邮,collectstamps,放风筝,stamp,邮票,raise,v.筹集,筹募,raisemoneyforcharity,为慈善事业筹集钱,Whatisshedoing?,Sheisskating.,Howlonghasshebeenskating?,Shehasbeenskatingforfourhours.,Whatishedoing?,Heisskating.,Howlonghashebeenskating?,Hehasbeenskatingforfivehours.,YaoMingssportslife,成龙（JackieChan）1954:beborn1961now:act,Hehasbeenactingfor52years.,HowlonghasJackieChanbeenacting?,Hehasbeenactingsincehewas6yearsold.,Hehasbeenactingsince1961.,MissLi1975:beborn20012013:teachChinese,HowlonghasMissLibeenteachingChinese?,ShehasbeenteachingChinesefor12years.ShehasbeenteachingChinesesince2001.,ShehasbeenteachingChinesesince12yearsago.,WangLei1990:beborn1999now:learnEnglish,HowlonghasWangLeibeenlearningEnglish?,ShehasbeenlearningEnglishsince1999.,ShehasbeenlearningEnglishfor14years.,ShehasbeenlearningEnglishsinceshewasnine.,ShehasbeenlearningEnglishsince14yearsago.,Ihavebeenskatingforfivehours.,时态现在完成进行时,have/has是助动词been是be的过去分词,当我们谈论动作从过去某一时间开始一直延续到现在,并且有可能持续下去时.,（一）,构成形式：,have/hasbeen+Ving,我们常常用以下句型来表示:for+一段时间have/hasbeen+doingsth+since+过去的时间点since+从句(一般过去时),eg.Howlonghaveyoubeenswimming?Ihavebeenswimmingfor3years.Howlonghasshebeenskating?Shehasbeenskatingsincenineoclock.,现在完成进行时,例句1,我已经学了年的英语了,IhavebeenlearningEnglishfor5years.,例句2,他已经集邮10年了,Hehasbeencollectingstampsfor10years.,Hehasbeencollectingsince10yearsago.,Hehasbeencollectingsince1995.,画线部分提问：,Howlonghashebeencollectingstamps?,（二）,引导时间的介词for与since的区别,for,since,表示时间的持续,for+时间段,表示“自从过去某一时间点以来”,since+时间点,强调一段时间,强调动作或状态一直延续到现在,(for与since引导的短语用howlong提问),forayearforfourweeksfortendays,sincelastyearsincetwoweeksagosincehecame.,用for和since填空,TheyhavebeenlearningChinese_theycametoChina.2.Ihaventseenher_alongtime.3.Hehasbeenlivinghere_2001.4.Shehasbeendoingherhomework_twohours.5.Its5years_weleftschool.6.HowlonghasMarybeenateacher?_twoyearsago.,Haveatry,since,for,since,for,since,Since,DengYaping1973:beborn19781997:playtabletennis,HowlongdidDengYapingplaytabletennis?,Sheplayedtabletennisfor19years.,A:HowlonghasJaybeensinging?B:He_for/since_.(周杰伦英文名:JayChou1986年7岁时开始学习唱歌距今27年),1978,1997,2011,startedplayingtabletennis,stoppedplaying,1986,2013,hasbeensinging,startedsinging,DengYapingplayedtabletennisfor19years.,JayChouhasbeensingingfor27years.,playedtabletennis,Listening1b,Ivebeenskatingforfivehours.,Iskatedfortwohours.,Listening2a,Questions,Answers,_1.Howlongdidyouskatetoday?_2.Howlonghaveyoubeenskatingtoday?_3.Wasthisyourfirstskatingmarathon?_4.Doyouskateeveryday?_5.Whendidyougetyourfirstpairofskates?_6.Howlonghaveyoubeenskating?,No,Iskatedinamarathonlastyear.b.Yes,Ido.c.Forsixhours.d.SinceIwas7yearsold.,Now,itstimeformetorelax!,ThankyouandGoodbye!,Howlonghaveyoubeencollectingshells?,Unit6,SectionAPeriod2LiuXinlanApril22nd,2008,1.Whyarestudentsskating?2.Howmuchdoeseachstudentraiseforeveryhourtheyskate?3.Howlonghastheskatingmarathonbeengoing?4.Whowasthefirsttostart?5.Howlonghashebeenskating?6.HowlonghaveSamandLuNingbeenskating?7.Whowasthelastone?8.Whendidhestart?Howlonghashebeenskating?,ReadingSectionA3a,Toraisemoneyforcharity.,Tenyuan.,Forfivehours.,Alisonwasthefirsttostart.,Hehasbeenskatingforfivehours.,Theyhavebeenskatingforfourhours.,LiChenwasthelastone.,Hestartedanhourago.,Hehasbeenskatingforanhour.,Sam,4hours,LuNing,4hours,LiChen,1hour,Checktheanswers:3a,Answersto3b,Alison,Sam,LuNing,LiChen,SectionB2a,2b,stuffedanimals,theaterandmovietickets,forfivehours,sinceLastyear,22,35,20,1.Ourclassisorganizingatalentshowto_moneyforcharity.2.IneedextraEnglishl