八年级下Unit5Section A课件3 (Grammma4c)

Unit5

Whatwereyoudoingwhentherainstormcame?SectionA3

now

atthistimeyesterday1Younow

at4:00lastSunday

2Tom

3BobandJacknow

atnoonyesterdayPractice

(Workinpairsandthenactthemout)A:Whatareyoudoingnow?B:Iamreadingabook.A:Whatwereyoudoingatthistimeyesterday?B:Iwasridingabike.A:WhatisTomdoing

now?B:Heisplayinggolf.A:Whatwashedoingat4:00lastSunday?B:HewasswimmingA:WhatareBobandJackdoingnow?B:They’re

running.A:Whatweretheydoingatnoonyesterday?B:Theywereplayingfootball.*Whatwereyoudoingateightlastnight?

Iwastakingashower.

Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakingdinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.GrammarFocusGrammarFocus*过去进行时（一）.基本概念

过去进行时表示在过去某一时刻或一段时间内正在进行的动作。这一特定的过去时间除有上下文暗示以外,一般用时间状语来表示。※Iwasplayingbasketballatteno’clockyesterday.※

IwashavinganEnglishclassfromseventonineo’clockyesterday.（二）.结构Pastcontinuoustensewas/were＋现在分词(v-ing)*动词加-ing的变化形式

规则示例1、一般情况下，动词后直接加-ing

working,buying,visiting,talking,saying

2、以不发音的e结尾的动词，去掉e，然后加-ing

taking,having,leaving,driving,writing,making

3、辅音字母＋元音字母＋辅音字母结尾的重读闭音节，双写末尾辅音字母加-ing

stopping,shopping,sitting,getting

4、特殊变化

lie--lyingdie-dyingtie-tyingpicnic-picnicking

注意：若结尾的辅音与元音字母组合发一个音，就直接加-ing。如：draw-drawing,play-playing*（三）.过去进行时的基本句型肯定式疑问式否定式\Wereyouworking?Washe/she/itworking?Wereyouworking?Wereyouworking?Weretheyworking?Iwasnotworking.He/She/Itwasnotworking.Wewerenotworking.Youwerenotworking.TheywerenotworkingTheywereworkingYouwereworkingWewereworkingHe/She/ItwasworkingIwasworking*（四）与过去进行时连用的时间状语有:1.atthis（that）time+过去时间2.atteno’clock+过去时间3.from6to9+过去时间4.thosedays5.atthetimeof…6.Atthesametime+过去时间7.由when引导的一般过去时的句子yesterdaylastnighttherainstormlastyear*1.昨天的这个时候我正在做 作业。Iwasdoingmyhomeworkatthattime yesterday.2.昨晚我一直在看电视。IwatchedTVlastnight.过去进行时常表示过去某一时刻或过去某一阶段内正在进行的动作。过去某一时刻过去某一阶段内（五）:过去进行时的用法：IwaswatchingTVlastnight.强调过程强调过去的事实*nameactivitytimeTomswimatthistimeyesterdayMrWangtakeashowerat10:00lastSundayKatewatchTVfrom3:00to5:00yesterdayTheKingsplaybasketballatthattimelastSundayThetwinsdohomeworkalldayyesterdayA:WhatwasTomdoingatthistimeyesterday？B:Hewasswimming…….Pairwork:*1、一般过去时往往表示某一动作已经完成，(在过去某个时间发生过的动作或存在的状态)而过去进行时却表示动作在持续或未完成。(在过去某一时刻或某一段时间正在进行的动作。)Shewrotealettertoherfriendlastnight.她昨晚给朋友写了封信。(信写完了)Shewaswritingalettertoherfriendlastnight.她昨晚一直在给朋友写信。(信不一定写完)2、一般过去时表示只做一次动作，而过去进行时却表示动作反复地进行。

Shewavedtome.她朝我挥了挥手。Shewaswavingtome.她一直朝我挥手。一般过去时与过去进行时的区别*when和while都可表示“当……的时候”，引导时间状语从句。你知道两者在过去进行时中的用法有什么不同吗？请仔细观察下面的例句.补全空格中的内容。过去进行时中的when和whilewhen引导的时间状语从句,通常使用一般过去时while引导的时间状语从句,通常使用（过去）进行时while前后的动词都是进行时态时,while表示与此同时。*IwaswalkingtoschoolwhenIsawacatinatree.※过去进行时和

When

连用Awas/were+doingsthWhenB+didsth.

长时动作短时动作walkingtoschool*WhenPeterarrivedhome,hismotherwascleaningthehouse.*①IwaswalkingtoschoolwhenIsawacatinatree.②WhenPeterarrivedhome,hismotherwascleaningthehouse.主句的动作是持续性的，而从句动作是短暂性的，此时用______引导时间状语从句，主句用__________时态，从句用一般过去时态。过去进行when一个动作发生时，另一个动作正在进行。*WhatwasLileidrawingwhentheteachercame

in?-Hewas

drawinganelephant.MaryJimLiLeiLilyLucySue*※过去进行时和

while

连用WhileAwas/were+doingsth,B+didsth.长时动作短时动作WhileIwassleepinginthebedroom,someoneknockedatthedoor.*Whilehewas…Hedid…Usewhile

todescribe(描述)picturesDavidfellwhilehewasridinghisbike.*③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbike.主句的动作是短暂性的，从句的动作是持续性的，此时用_______引导从句，主句用__________时态，从句用过去进行时态。一般过去while*

※过去进行时和

while

连用A

was/were+doing

sth

While

B+was/were+doingsth长时动作长时动作两个动作同时进行.WhileLiliwaswaitingforthebus,shewasreadinganewspaper.*Hewascleaninghiscarwhileshewascooking.*⑤WhileLiliwaswaitingforthebus,shewasreadinganewspaper.⑥HewascleaninghiscarwhileIwascooking.主句和从句的动作在过去的某时刻或某段时间同时发生，而且动作都是持续性的，此时用_________引导从句，而且主句和从句都用____________时态。过去进行while*WhileI…Hewasdoing…WhileIwaswalkingtoschool,hewaseating.Usewhile

todescribe(描述)pictures*

Amonkeywas…….while

twocatswere……

at3p.m.yesterday*when与while主从句的几种时态搭配关系。主句时态连词从句时态was/weredoingwhendiddidwhenwas/weredoingdidwhilewas/weredoingwas/weredoingwhilewas/weredoing

总结

1)when可指时间点,又可指时间段,从句中可用延续性动词,也可用非延续性动词。

2)while总是指一个时间段,从句中必须用延续性动词。*Lookatthetableandwritesentenceswithboth

whileandwhen.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash4aWhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.turnon打开（反）turnoff关掉

时间状语从句主句

主句

时间状语从句买份饮料离开家打开收音机把车送到洗车处*2.WhileJohn

wasplaying

thepiano,Mary

left

thehouse.

John

wasplaying

thepianowhenMary

leftthehouse.3.WhileJohnwascleaninghisroom,Maryturnedontheradio.JohnwascleaninghisroomwhenMary

turnedontheradio.4.WhileJohnwasshopping,Marytookthecartothecarwash.Johnwasshopping

whenMarytookthecartothecarwash.*Fillintheblankswithwas,were,whenorwhile.At7:00a.m.,Iwokeup.______I____makingmybreakfast,mybrother______listeningtotheradio.________Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook._____wegottotheplaceoftheaccident,thecar_____inbadshapefromhittingatree.Butluckilythedriver____fine.Theroads______icybecauseoftheheavysnowfromthenightbefore.WhilewaswasWhileWhenwaswaswere当我们到达事故现场的时候,汽车由于撞在了树上，已经变了形。

4b收音机新闻

听收音机

车祸

在我家附近

立刻出去

看一看

汽车因为撞到树上而严重变形了。

由于前晚的大雪，路面是结满冰的。

*

WhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.YouYourpartner9:00a.m.11:30a.m.4:00p.m.9:00p.m.4cA:Whatwereyoudoingatnineo’clocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:You’rekidding!readEnglishhavebreakfastdomyhomeworkwatchTVplaybasketballpracticedancingtakeashowerlistentomusic*I.根据汉语意思完成下列英语句子，每空一词。1.昨天下午五点钟你哥哥在做什么？What________yourbrother________atfiveyesterdayafternoon?2.昨天我回到家时，我妈妈在洗衣服。Mymother_____________clothes________I________homeyesterday.

3.你做作业时，你妹妹在干什么？Wh