新目标八年级下册Unit 6 Period 1 课件

Howlonghaveyoubeencollectingshells?,Unit6,重点与难点：,现在完成进行时,have/hasbeen+Ving,引导时间的介词for与since的使用,shell,collectshells,收集贝壳,Newwords,marathon,skate,apairofskates,Sheisskating.,Sheisaskater.,Whatishedoing?,Heisflyingakite.,kite,stamp,集邮,collectstamps,raisemoneyforcharity,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.,Ihavebeenskatingforfivehours.,时态现在完成进行时,have/has是助动词been是be的过去分词,表示从过去开始一直持续到现在的动作，并有可能持续下去,（一）,构成形式：,have/hasbeen+Ving,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),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,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.IneedextraEnglishlessons.Doyou_agoodEnglishteacher?3.Myhobbyis_oldcoins.4.Ididntfinishwritingmytestbecaus