Unit 8 Grammar课件 牛津译林版八年级上册英语

Unit8NaturaldisastersGrammarGrammarA1.过去进行时主要表示：￭在过去某一时刻正在进行的动作

Theywereeatingbreakfastat7:00a.m.yesterday.(b)Iwas

writingaletteratthistimeyesterday.￭在过去某段时间一直在进行的动作(a)From6:40a.m.to7:20a.m.,wewerereadingEnglishtoday.(b)Hewasplayingcomputergamesuntil12o’clockyesterdayevening.Pastcontinuoustense2.过去进行时的句式(1)基本结构：was/were+verb-inge.g.Iwasdoingsomeshopping.Peoplewererunningwildly.(2)否定式：was/werenot+verb-ing

wasnot=wasn’twerenot=weren’te.g.Iwasnotreading.Peoplewerenotrunningwildly.(3)疑问句：将was/were调到主语前e.g.---Washerunning?---Yes,hewas./No,hewasn’t.---Weretheyrunning?---Yes,theywere./No,theyweren’t.Watch,readandanswerWhatwereyoudoingat7o’clocklastnight?Iwasdoingsomehousework.Iwashavingdinner.Whatwereyoudoingfrom7to9p.m.yesterday?Iwasdoingmyhomework.IwaswatchingTV.Whatwasyourfatherdoingwhenyoucamebackhomeyesterday?Hewascooking.Whatwasyourbrotherdoing

whenyousawhimhalfanhourago?Hewasplayingcomputergames.AsnowstormhitSunshineTown.MrWuisaskingthestudentsaboutit.Completetheirconversationwiththecorrectformsoftheverbsinbrackets.Mr.Wu:Whataterriblesnowstorm!Itstarted

ataboutseventhismorning.I

__________(read)thenewspaperthen.What______you______(do),

Simon?Simon:I_____________(have)breakfast.Mr.Wu:Whataboutyou,Millie?wasreadingweredoingwashavingMillie:

I____________(walk)tothebusstop.

Sandy,Isawyouandyourparents

standingonthesideoftheroad.

________you________(wait)forataxi?Sandy:Yes.Mydad’scarbrokedownbecause

ofthecoldweather.He_____________

(ring)someonetocomeandhelpwhen

yousawus.waswalkingWerewaitingwasringingPracticeItwasteno’clockonSundaymorning.Thefamilywereallinthegarden.MrKingandMrsKing___________(sit)underthetree,andthey___________(talk)and________(laugh).TheirsonJack___________(read)aninterestingbook.TheirdaughterWendy__________(play)withtheirdog.Everyonewashappy.weresittingweretalkinglaughingwasreadingwasplayingGrammarB‘while’,‘when’and‘as’1.when,while和as这三个词都有“当……时候”的意思。e.g.Iwassleepingwhentheearthquakestarted.

AsIwastryingtofindmywayout,Isuddenlyheardsomenoiseaboveme.

Peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown.2.用while,when,as这三个连词连接时间状语从句时，从句和主句的谓语动词时态有规定：1)当短动作和长动作同时发生，我们用过去进行时表示长动作，用一般过去时表示短动作2)两个都是长动作。用while连接从句e.g.Peoplewererunningwhilebrickswerefallingdown.3)主句是短动作，用while,as,when连接从句(长动作)e.g.While/As/WhenMilliewaswatchingTV,Andycameintotheroom.4)主句是长动作，用when连接从句(短动作)e.g.Iwassleepingwhentheearthstartedtoshake.5)两个都是短动作，常用as连接从句，强调同时发生e.g.As

Milliesatdown,Andycamein.3.当while,when和as放在句首时，两个句子应用逗号隔开。放在主句后面时，不必用逗号隔开。e.g.Whentheteachercamein,weweretalking.

Whilethepigwasdancing,therabbitwasjumping.

As

thetwomenwereleaving,amessagearrived.Practice1.I___________(sleep)whenitstartedtorain.2.Iwassleeping______theearthquakestarted.3.Outside,people____________(run)inall

directions______piecesofglassandbricks____________(fall)down.4.Hourslater,______________I____________

(try)tofindwayout,Isuddenlyheardsome

noiseaboveme.wassleepingwhenwererunningwhilewerefallingwhen/while/aswastryingSomeClass1,Grade8studentswenttoplayinthesnow.Completethesentenceswiththecorrectformsoftheverbsinbrackets.Usewhen,whileorastoconnectthesentences.1.______Simon________(arrive),Amy

_________(get)somesnowfromtheground.2.______SuzyandKitty_____________(build)

asnowman,Millie___________(take)photos.WhenarrivedwasgettingWhilewerebuildingwastaking3.Daniel____(fall)over______________he

____________(make)abigsnowball.4.Peter_____________(hide)behindatree

______asnowball___(hit)him.5.______Millieandherclassmates

_____________(play)inthesnow,Andy

____________(run)towardsthem.fellwhen/while/aswasmakingwashidingwhenhitWhilewereplayingwasrunningExercises1.---Whatwereyoudoingthistimeyesterday?---I_____onthegrassanddrawingapicture.A.sit

B.satC.amsitting D.wassitting2.WhenIcamebackyesterdayevening,mybrother_____hishomework.

A.isdoing

B.hasdone C.wasdoing3.---Icalledyouat4:00yesterdayafternoon,butnooneanswered.

---Sorry,I_____withmyfriendsatthattime.

A.swim

B.swam

C.willswimD.wasswimming4.---Amy,Icalledyouyesterdayevening,butnobodyansweredthephone.---Oh,I____awalkwithmymotheratthattime.A.take B.took C.amtakingD.wastaking5.He______whentheUFOarrived.Hedidn’twakeuntiltheUFOdisappeared.

A.slept

B.wassleeping

C.wasdoinghomeworkD.wassinging6.______Itookthebrushaway,Idroppedsomepaint_______thepaper.A.As;onto

B.While;onC.When;inD.Since;on1.上周这时候你