Unit 5 第3课时 Section A Grammar Focus-4c（同步课件）【知识精研】八年级英语下册（人教版）

第3课时SectionAGrammarFocus-4c初中英语/人教版/八年级下册

Unit5Whatwereyoudoingwhentherainstormcame?01Review05Summary03Presentation02Grammar06Homework04Exercises01020304语言能力思维品质文化意识学习能力学习目标掌握下列词汇：havealook,icy,kid...

通过情境创设，理解过去进行时态的运用；通过小组合作总结语法规律，学会正确使用过去进行时。发展学生的发现能力和合作精神，体会中西方语言的差别。掌握过去进行时was/were+doing的定义、结构，时间状语和用法。ReviewPart011.—Whatwereyoudoingateightlastnight?—I____________ashower.wastaking2.—Whatwasshedoingatthetimeoftherainstorm?—She____________herhomework.3.—Whatwashedoingwhentherainstormcame?—He______________inthelibrary.wasreading4.—WhatwasBendoingwhenitbegantorainheavily?—______itbegantorain,Benwashelpinghismommakedinner.When5.—WhatwasJennydoingwhileLindawassleeping?—______Lindawassleeping,Jennywashelping

Marywithherhomework.WhilewasdoingWhatweretheydoingat6:00p.m.yesterday?ShewaswatchingTVatthatmoment.Hewasdoinghishomeworkatthatmoment.Theywerehavingapicnicatthatmoment.Theywereplayingbasketballatthatmoment.Makeupthesentences.WhenI…,hewas…WhenIcalledhimup,hewassleeping.Iwas…,when…Iwaswaitingforthebuswhenitbegantorain.WhileIwas…,he…WhileIwaswalkingtoschool,hefellasleep.WhileIwaswalkingtoschool,hewassleeping.Grammar

Part02GrammarFocusReadthesentencesandtranslatethem.Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.1.—Whatwereyou_______ateightlastnight?—I_____________(take)ashower?2.–What______shedoingatthetimeofrainstorm?—She_____________(do)herhomework.3.—Whatwashedoingwhentherainstorm________(come)?—He_____________(read)inthelibrarywhentherainstormcame.4.—WhatwasBen_______whenit_______torainheavily?—Whenitbegantorain,Ben____________(help)hismommakedinner.5—WhatwasJennydoingwhileLinda____________(sleep)?—WhileLindawassleeping,Jenny____________(help)Marywithmath.Fillintheblanksaccordingtogrammarfocus.doingwastakingwaswasdoingcamewasreadingdoingbeganwashelpingwassleepingwashelpingGrammarFocusWhatdidyoufindout?Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.

过去进行时的结构和用法1.含义：过去进行时表示_____________或______________正在进行或发生的动作。过去某一时刻过去某一时间段Whatwereyoudoing

at8o’clockyesterday?WhatwasJennydoingfrom7to9lastnight?过去某一时刻时间段过去进行时的结构和用法Whatwereyoudoing

whenthestormcame?Whilethegirlsweresinging,theboysweredancing?过去某一时刻时间段ShewaswatchingTVatthatmoment.Hewasdoinghishomeworkat6:00p.m.yesterdayTheywerehavingapicnicatthatmoment.Theywereplayingbasketballat6:00p.m.yesterday.过去的某个时间点：当时正在做某事过去进行时的结构和用法2.构成：was/were+动词-ing形式当主语是第一人称单数形式或第三人称单数形式时，be动词用was，其余人称用were。Iwasdoingmyhomework

at9:00pmlastSaturday.Zhengwas

playingcomputergamesatthattime.Wenandhersisterwerestudying

whenIposted

a

notice.Theywereplayingcomputergameswhenitbegantorain.WhenJakewassleeping,hisbrotherplayedbasketball.Teacherswerewaitingforthebus

whentherainstormcame.过去进行时的结构和用法3.过去进行时的结构S(主语)+was\were+v.–ing+其它在那时他正在睡觉。肯定形式was\were+doing否定形式was\were+not+doingHewasn’tsleepingatthattime.一般疑问句形式was\were+主语+doing？Washesleepingatthattime?特殊疑问句形式疑问词+was\were+主语+doing？Whatwashedoingatthattime?Hewassleepingatthattime.过去进行时的结构和用法4.过去进行时的标志词表示过去时间点的有:then,atthat\thistimetimeyesterday,at5o'clocklastnight,Whentheteachercamein/left等表示过去时间段的有:allnight,allthemorning,from7:00to9:00yesterday;whilehewasreading?等昨天晚上9点格林一家人没有看电视。TheGreenswerenotwatchingTVat9:00lastnight.Whenmymothercameback,Iwaseatingbreakfast昨天那个时候格雷丝正在花园里浇花。Gracewaswateringflowersinthegardenatthattimeyesterday.Iwassinging

whilemysisterwasdancing.过去进行时的结构和用法5.现在进行时与过去进行时的区别过去进行时含义:表示过去某个时刻或某一阶段正在进行的动作。结构：was/were+doing例句：IwashavinganEnglishclassatthistimeyesterday.现在进行时含义:表示现在正在进行的动作。结构：

is/am/are+doing例句：IamhavinganEnglishclass.

now,Look!Listen!atthemoment时间状语与特定的过去时间状语连用,常见的时间有:at9lastnight,atthistime，atthattime,atthatmoment，from...to等过去进行时的结构和用法6.过去进行时和一般过去时的区别用法不同一般过去时：过去某个时间发生的动作或存在的状态，强调动作已发生或已完成。过去进行时：过去某一时刻或某一段时间正在进行或发生的动作，强调动作正在进行，而可能尚未完成的动作。Davidwrotealettertohisfriendlastnight.戴维昨晚给他的朋友写了封信。（信写完了）Davidwaswritingalettertohisfriendlastnight.戴维昨晚一直给他的朋友写信。（信不一定写完）过去进行时的结构和用法6.过去进行时和一般过去时的区别谓语动词结构不同一般过去时：主语+was/were+V-ing形式过去进行时：主语+动词过去式时间状语不同一般过去时：yesterday,lastweek,in1993,once,before,afewdaysago等。过去进行时：at7yesterday,atthattime,thistimelastnigh等;when与while引导的时间状语从句。1.Sallytookaphotoofherfriendswhilethey__________(play)computergames.2.Justaminute!Mybrother___________(wash)hiscarinthegarden.3.—CanPeterplaygameswithus,Mrs.Hawking?—Waitaminute.He_________(take)ashower.4.Myuncle__________(read)booksintheroomatthistimeyesterday.5.Iwasplayingcomputergameswhenmymothercameintomyroom.(同义句转换)_________________________________________________________While/WhenIwasplayingcomputergames,mymothercameintomyroom.wereplayingiswashingistakingwasreading小试牛刀GrammarFocusWhatdidyoufindout?Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoing

whenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.

过去进行时中的when与while引导的时间状语从句相同点：when和while均可作连词，意为“当……的时候”，引导时间状语从句，和过去进行时连用。IwasdiscussingamathproblemwithJoewhenMikecalledmeup.

WhileIwasfishingbytheriver,Isawanemptyboatnearby.过去进行时中的when与while引导的时间状语从句when引导的时间状语从句通常与瞬间性动词或延续性不强的动词连用。瞬间性动词指动作极为短暂，瞬间结束。如：

start,begin,hit,jump,knock等。when引导的时间状语从句与瞬间性动词连用时，用一般过去时，主句用过去进行时。Iwaswaitingforthebuswhenitbegantorainheavily.主句when引导的时间状语从句延续性动词指动作可以延续一段时间，而不是瞬间结束。如：work,study,drink,eat等。when引导的时间状语从句与延续性不强的延续性动词连用时，用过去进行时，主句用一般过去式。Iarrived

athomewhenmymumwascooking.主句when引导的时间状语从句过去进行时中的when与while引导的时间状语从句while引导的时间状语从句强调主句动作在从句动作进行的过程中发生，从句的谓语动词必须为延续性动词，常用进行时。1.从句用过去进行时，主句用一般过去时。WhileIwaswatchingTV,Tomcamein.2.主句和从句都用进行时。强调主、从句动作同时进行。WhileIwaswatchingTV,shewasdoingsomecleaning.WhileLindawassleeping,Jennywashelpingmewithmyhomework.强调主句动作发生时，从句动作正在进行，常用while引导从句。主句常用一般过去时，从句常用过去进行时。当我正在河边钓鱼时，我看到附近有一条空船。WhileIwasfishingbytheriver,Isawanemptyboatnearby.过去进行时中的when与while引导的时间状语从句主句动作是持续性的，用__________时态；从句动作是短暂性的，用___________时态，用______引导。①IwaswalkingtoschoolwhenIsawacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.过去进行when一般过去主句动作是短暂性的，用__________时态；从句动作是持续性的，用___________时态，用______引导。③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbike.一般过去while过去进行Hewasreadinginthelibrarywhen

therainstormcameWhileAmywasreadingabook，Icamein.过去进行时中的when与while引导的时间状语从句主句和从句动作在过去的某时刻或某段时间同时发生，且动作都是持续性，主句、从句都用_________时态，用______引导从句，⑤WhileAndywaswaitingforthebus,hewasreadinganewspaper.⑥HewascleaninghiscarwhileIwascooking.过去进行whileWhileLindawassleeping，JennywashelpingMarywithherhomework.WhileJohnwasriding,Marywasrunning.小试牛刀用when、while填空

1.______Ritaboughthernewdog,itwaswearingalittlecoat.2.______IsawMike,hewaswearingagreenshirt.3.__________Maywastalkingonthephone,hersisterwalkedin.4.______Iwasdancing,hewassingingloudly.5.______LindafinallysawDave,hewasjumpingwithadog.6.Iwascleaningmyroom______hecamein.WhileWhenWhenWhile/WhenWhenwhenPresentationPart03Lookatthetableandwritesentenceswithbothwhileandwhen.4aWhileJohnwastakingphotos,Marywaswalkingtowardstheshop.Johnwastakingphotos

whileMarywaswalkingtowardstheshop.JohnMarytakephotoswalktowardstheshopplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash延续性动词非延续性动词Lookatthetableandwritesentenceswithbothwhileandwhen.4aJohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash2.WhileJohnwasplayingthepiano,Maryleftthehouse.JohnwasplayingthepianowhenMaryleftthehouse.Lookatthetableandwritesentenceswithbothwhileandwhen.4aJohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash3.WhileJohnwascleaninghisroom,Maryturnedontheradio.JohnwascleaninghisroomwhenMaryturnedontheradio.Lookatthetableandwritesentenceswithbothwhileandwhen.4aJohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash4.WhileJohnwasshopping,Marytookthecartothecarwash.JohnwasshoppingwhenMarytookthecartothecarwash.Fillintheblankswithwas,were,whenorwhile.At7:00a.m.,Iwokeup._____I____makingmybreakfast,mybrother_____listeningtotheradio._____Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook._____wegottotheplaceoftheaccident,thecar____inbadshapefromhittingatree.Butluckily,thedriver____fine.Theroads_____icybecauseoftheheavysnowfromthenightbefore.WhilewasWhileWhenwaswaswere4bWhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.4cYouYourpartner9:00a.m.11:00a.m.4:00p.m.9:00p.m.WhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.4cWhatwereyoudoingat…lastSunday?9:00a.m.11:30a.m.4:00p.m.9:00p.m.A:Whatwereyoudoingatnineo’clocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:You’rekidding!v.欺骗;戏弄;开玩笑Example:A:Whatwereyoudoingatfouro’clocklastSundayafternoon?B:Iwasplayingsoccer.Howaboutyou?A:Iwasreadingabook.B:You’rekidding!Exercises

Part041.______Iarrivedattheairport,theplanewastakingoff.A.WhenB.WhileC.HowD.What2.Mybrotherwasplayingcomputergames_______mysisterwasreading.A.WhenB.WhileC.HowD.What3.Icalledyouyesterdayevening.Butnobodyanswered.sorry.MaybeI______inthebathroomatthetime.A.takeashowerB.tookashowerC.wastakingashower