英语人教版八年级下册Unit5 SectionA Grammar-4c.ppt

Unit5Whatwereyoudoingwhentherainstormcame SectionA Grammar 4c 湖北省十堰市东风七中谢晋 Makesentencesonebyonewithwhen while 句子接龙 Warmingup MakeconversationsinpairswiththePastProgressiveTense Checkhomeworkon line SheweredoinghouseworkwhenIwasdoingmyhomework Whatwereyoudoingatthistimeyesterday Iwasdoingmyhomework Whatwereyourmotherdoingwhileyouweredoingyourhomework 1 2 3 4 5 Watchavideo Whathappened Adisaster 灾难 tookplaceinAmerica Thereweretornados 龙卷风 coming Luckily itwasOKinChina Whatwerethefamouspersonsdoingatthattime Guessing Hewasexercising WhatwasLuHandoingatthetimeofthetornado WhatwasshedoingwhileLuHanwasexercising Shewasdrinkingwater Shewasreadinginthelibrary Whatwasshedoingwhenthetornadocame Hewasrunning WhatwasYaoMingdoingwhenthedisastercame Whatweretheydoingatthetimeofthetornado Theywerecookingathome 1 2 3 4 5 探究一ReviewthePastprogressivetense过去进行时 过去某时刻或某时段正在发生的动作 at8yesterday atthattime from6to9p m when while时间状语从句 am is are 1 含义 过去进行时表示 2 时间状语 3 基本结构 现在进行时 动词 ing过去进行时 动词 ing was were 4 句型1 肯定句 主语 动词 ing形式He watch TVatninelastnight Myparents cook atthattime 2 否定句 主语 动词 ing形式I notplay basketballwhenitbegantorain was were waswatching werecooking was were not wasn tplaying 3 一般疑问句 主语 动词 ing形式 肯定回答 Yes 主语 否定回答 No 主语 you have supperatthetimeoftherainstorm No I 4 特殊疑问句 疑问词 主语 动词 ing形式 Whatthetwins do then Was Were was were wasn t weren t Werehaving wasn t was were were doing chant 过去进行最好记 was were后加doing 动作发生在过去 时间状语别忘记 肯定主语位句首 一般问句提前be 否定句式更简单 be后仅把not添 2 3 4 5 观察以下两组短语并得出结论waitforthebus playthepiano cleantheroom goshoppingcomein arrivehere leavethehouse turnontheradio 第一组为 能 不能 持续发生的动作 叫延续性动作 第二组为 能 不能 持续发生的动作 叫非延续性动作 也叫瞬间动作 探究二观察并探讨when while的用法 能 不能 观察以下四组句子并得出结论1 1 WhenIfirstmetJimtwoyearsago hewasworkinginthesupermarket 2 Wewerehavingdinnerwhenthephonerang 3 Weweretalkingwhentheteachercamein 4 Whentheteachercamein weweretalking 主句为延续性动作 从句中的动作时态为 只能由引导 从句若在主句之前 用逗号隔开 瞬间 when 一般过去时 2 1 Iwasdoingmyhomeworkwhilemyparentswerecooking 2 Weweresingingwhiletheyweredancing 3 Whiletheyweredancing weweresinging 主句为延续性动作 从句中的动作时态为 只能由引导 从句若在主句之前 用逗号隔开 延续性 while 过去进行时 3 Whenwearrivedattherestaurant wesawthatitwasclosed 主句为瞬间动作 从句中的动作时态为 只能由引导 从句若在主句之前 用逗号隔开 瞬间 when 一般过去时 4 1 Whileweweretalking theteachercamein 2 Theteachercamein whileweweretalking 3 ImetmyfriendJimwhenIwaswalkinginthestreet 4 WhenIwaswalkinginthestreet ImetmyfriendJim 主句为瞬间动作时 从句中的动作既可以由引导 也可有由引导 从句若在主句之前 用逗号隔开 延续性 while when When while小结 当一个为瞬间动作 一个为延续性动作时 瞬间动作只能由引导 延续性动作和都可以引导 当两个都是延续性动作时 只能由来引导 while when while when 3 4 5 Rememberwhatyouhearinthevideo Micro class 1 Johnwasplayingthepiano Maryleftthehouse 2 JohnwasplayingthepianoMaryleftthehouse 3 WhileJohn 打扫 hisroom Maryturnedontheradio JohnwascleaninghisroomMaryturnedontheradio 4 我在吃早饭的时候 我妈妈正在听收音机 While When when wascleaning Exercise when WhileIwaseatingmybreakfast mymotherwaslisteningtotheradio 5 6 7 4 连词成句 Practice WriteandConnect 连词成句 主语1 延续动作3 瞬间动作6 延续动作4 瞬间动作5 主语2 地点7 地点8 5 6 7 Competition Fourstudentsdraw 抽出 cardsandactoutatthesametime Theotherstudentsmakesentences Themore thebetter 你演我来猜 Whatweretheydoing 7 6 Whic