八年级下册Unit6 SectionA Period1课堂教学课件

Unit6Howlonghaveyoubeencollectingshells?,SectionAPeriodOne,Review,Wordsandexpressions,Readtheexplanationandspeakouttheworditexplains.,togetandkeepthingsofonetypesuchasstampsorcoinsasahobby,twothingsthatarealikeandmeant;couple,fromaparticulartimeinthepastuntilalatertime,oruntilnow,prep.自以来,v.收集;搜集,n.一对;一双,since,collect,pair,Discussion1.Howlongdidyousleeplastnight?2.Whendidyoustartclasstoday?3.Howlonghaveyoubeeninclasstoday?,Lookandsay,Howlongdidsheskate?Sheskatedforthreehours.,Howlonghaveyoubeenskating?,Ihavebeenskatingforfivehours.,Howlong_he_?He_.,has,beensleeping,hasbeensleepingfortwohours,Clicktoit.,1b,Listen.Areporteristalkingtotheparticipantsinaskatingmarathon.Fillinthechartbelow.(1b),Ivebeenskatingforfivehours.,Iskatedforfourhours.,Ivebeenskatingforfivehours.,Iskatedfortwohours.,_havetheybeenskating?Alison_forfivehours.Sam_atnineoclockinthemorningand_atoneoclockintheafternoon.Sam_forfourhours.Hewasverytired!Victorstarted_atnineoclock.Hesbeenskating_fivehours.Celiaskated_twohours.,Howlong,hasbeenskating,started,stopped,skated,Fillintheblanks.,skating,for,for,A:HowlonghasAlisonbeenskating?B:Shesbeenskatingforfivehours.A:HowlongdidSamskate?B:Heskatedforfourhours.,Askandanswerquestionsaboutthepeopleinthepicture.(1c),Pairwork,A:HowlonghasVictorbeenskating?B:Hesbeenskatingforfivehours.A:HowlongdidCeliaskate?B:Sheskatedfortwohours.,Example:,DoyouknowYaoMingssportslife?HowlonghasYaoMingbeenplayingbasketball?,YaoMingssportslife,Hehasbeenplayingbasketballfor21years.Hehasbeenplayingbasketballsince1989.Hehasbeenplayingbasketballsincehewas9yearsold.,Clicktoit.,2a,1.Howlongdidyouskatetoday?2.Howlonghaveyoubeenskatingtoday?3.Wasthisyourfirstskatingmarathon?4.Doyouskateeveryday?5.Whendidyougetyourfirstpairofskates?6.Howlonghaveyoubeenskating?,Listentotheinterviewwiththeskatingmarathonwinnerandcheckthequestionsyouhear.(2a),Questions1.Howlongdidyouskatetoday?3.Wasthisyourfirstskatingmarathon?4.Doyouskateeveryday?6.Howlonghaveyoubeenskating?,Answersa.No,Iskatedinamarathonlastyear.b.Yes,Ido.c.Forsixhours.d.SinceIwassevenyearsold.,Listenagain.Drawlinestomatchthequestionswithanswers.(2b),Alison:Iskated_sixhourstoday!I_inamarathonlastyear.I_Iwassevenyearsold.Igotmyfirstpairofskatesonmybirthdayfrommygrandmother.,Fillintheblanks.,for,skated,vebeenskating,since,A:Howlonghaveyoubeenskating?B:IvebeenskatingsinceIwassevenyearsold.,Askandanswerquestionsaboutthepeopleinthepicturein1a.(1c),Pairwork,A:Howlongdidyouskatetoday?B:Forsixhours!,Example:,-Howlonghaveyoubeenskating?-Ivebeenskatingsincenineoclock.Ivebeenskatingforfivehours.-Howlongdidyouskate?-Iskatedfortwohours.,Revision,Languagepoints,IvebeenskatingsinceIwassevenyearsold.【同步造句】从六岁开始，她就一直在弹钢琴。_【用法透析】since和for都可用于含有现在完成时或现在完成进行时的句子。since可作介词，后接时间点，也可作连词，后面接从句。而for为介词，后面接时间段。如：,Shesbeenplayingthepianosinceshewassixyearsold.,MrSmithhasbeenlivinginBeijingforfiveyears.【拓展链接】对“since+时间点”、“since+从句”或“for+时间段”进行提问时，用howlong，句中的谓语动词用延续性动词。如：Howlonghaveyoubeencollectingshells?Fortenyears./Sincetenyearsago./SinceIwassixyearsold.,根据句意及汉语提示填写单词。1.Iwanttobuyanew_(一双)ofskates.2.Henryhasbeenwriting_(自从)nineoclock.3.Ilike_(收集)shells.Ithinkitsfun.,pair,since,collecting,选择括号内适当的词语填空。1._(Howlong/Howfar)hasyourbrotherbeenplayingtennis?2.WenLiistooshytospeakinfrontofthe_(all/whole)class.3.Lizhasbeenstudyingmedicine_(since/for)threeyears.4._(Each/Every)ofthestudentshasanEnglish-Chinesedictionary.5.ShenXueandZhaoHongdaoaregood_(skates/skaters).,Translateandwritethemdown.,1.-他踢足球踢了多长时间了？-他踢了五个小时了。2.你滑冰有多久了？-我从七岁就开始滑冰了。,Howlonghashebeenplayingfootball?Hesbeenplayingforfivehours.,Howlonghaveyoubeenskating?IvebeenskatingsinceIwassevenyearsold.,3.中国是一个有悠久历史