+Unit+5+Grammar+Focus 人教版八年级英语下册

GrammarFocus过去进行时ThePastContinueTenseLookandanswer.Whatisshedoing

now?Sheisdoingherhomework.Whatwashedoing

atthattime?Hewasdoinghishomework.Lookandanswer.Whatishedoingnow?Heistakingashower.Whatwashedoingateightlastnight?Hewastakingashower.Lookandanswer.Look!Whatisshedoing?Sheislisteningtomusic.Whatwashedoing

whenthestormcame?Hewaslisteningtomusicwhenthestormcame.过去进行时（PastProgressiveTense）

语法定义过去进行时表示在过去某一时刻或某一段时间正在进行的动作。其基本结构为“was/were+动词-ing”。过去进行时的基本句式

eg：ThegirlwasshoppingwhenIsawher.主语+was/were+v-ing+其他.主语+was/were+not+v-ing+其他.eg：Iwasn’twatchingTVatnineo'clocklastnight.肯定句否定句过去进行时的基本句式

eg：—Wereyoucookingatthattime? —Yes,Iwas./No,Iwasn't.Was/Were+主语+v-ing+其他?特殊疑问词+was/were+主语+v-ing+其他?eg：—Whenwereyoudancingyesterday?—Weweredancingattenlastnight.一般疑问句特殊疑问句肯定回答：Yes,主语+was/were.否定回答：No,主语+wasn't/weren't.1.Iwassingingsongsyesterdaymorning.否定句：______________________________一般疑问句：______________________________2.Theyweredrawingpictureswhentheteachercamein.否定句：__________________________________一般疑问句：________________________________3.Shewaswashingthewindowwhenthetelephonerang.否定句：_______________________________一般疑问句：_______________________________ExerciseOneIwasn'tsingingsongsyesterdaymorning.Wereyousingingsongsyesterdaymorning?Theyweren'tdrawingpictureswhentheteachercamein.Weretheydrawingpictureswhentheteachercamein?Shewasn’twashingthewindowwhenthetelephonerang.Wasshewashingthewindowwhenthetelephonerang?atthattime（在当时）,

thistimeyesterday,at5o’clocklastnight,allnight,allthemorning,from7:00to9:00yesterday;when或while（当...时候）过去进行时的标志词

口诀规则例子直1.一般情况下，直接在动词后加-ing；play–playing去2.动词以不发音的-e结尾，要去-e加-ing；take–taking双3.重读闭音节结尾末尾只有一个辅音字母的动词，要双写词尾的辅音字母，再加-ing；cut–cutting改4.

以-ie结尾的动词，把ie改成y再加-ing。lie–lying现在分词变化形式（+ing）（直去双改）take________ play________ shop________sleep________ buy________ leave________

turn________ kid________ hit________die________ lie________ write________Pleasewritethe-ingformofthefollowingwords.takingsleepingturningplayingbuyingkiddingshoppingleavinghittingdyinglyingwritingWhatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpingmakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.找出从句中连词（whenorwhile）及与其后的动词形式。过去进行时中的while和when1.__________thetelephonerang,hewasreading.__________hewasreading,thetelephonerang.2.Bobwassleeping__________hismotherwascooking.3.Iwasstudyinghere_________therainstormcame.4.Don'tuseyourphone__________youaredriving.whenwhilewhilewhenwhileWhen和while的区别:when引导的从句，后面可以用一般过去/现在时或进行时；while引导的从句，后面只可以用进行时。延续性动词和非延续性动词如：work,study,drink,eat等。延续性动词指动作可以延续一段时间，而不是瞬间结束。非延续性动词指动作极为短暂，瞬间结束。

如：

come,go,leave,arrive,start,begin,hit,jump,knock等。Hestudiedalldayintheclassroom？

Hediedfiveyearsago.ps:只有延续性动词才能用进行时When和while的区别主句从句短暂性动词（短动作）延续性动词（长动作）WhenIarrived

athome,mymumwascooking.Iarrivedathomewhile/whenmymumwascooking.IwaswatchingTVwhilemymotherwascooking.短暂性动词（短动作）延续性动词（长动作）主句从句延续性动词（长动作）延续性动词（长动作）主句从句

whenwhile意思共同点不同点当......的时候when与while用法总结若后面加的是延续性动词，表示一段时间可以用when/whileWhen/WhileIwaswateringtheflowers,itbegantorain.若后面加非延续性动词，只能用whenWhenheleft,wewerehavingaparty.若主句和从句都用过去进行时表示同时进行，只能用while.IwasdoingmyhomeworkwhilemyfatherwaswatchingTV.

记忆口诀：when后可长可短，while后只可长若两者皆为长，只能用while连接短则一般过去时（did）长则过去进行时（was/weredoing）PS:“短”指短暂性动词；“长”指延续性动词过去进行时中的while和when1.Whileshe______TV,sheheardasoundoutsidetheroom.A.watching

B.watchedC.watches

D.waswatching2.They_____afootballgamefrom7to9lastnight.A.werewatching

B.watchC.watchedD.arewatching3.WhatbookwereyoureadingwhenI____youatfouryesterdayafternoon?A.wasseeing

B.see

C.sawD.amseeingDACExercise用所给词的正确形式填空。1.Whilewe____________(wait)forthebus,agirl_________(run)uptous.2.I_______________(telephone)afriendwhenBob______(come)in.werewaitingranwastelephoningcame3._______Igotback,Ifoundmymothercookingforme.A.WhenB.Since C.BeforeD.While4.Amywasreadingabook_______Icamein.A.when B.while C.becasueD.though5.Tomwasworkinginthegarden_____Iwassittinginthesun.A.because B.when C.while D.assoonasAAC【典例1】LittleTom______computergameswhenhismothergothome. A.isplayingB.playsC.wasplayingD.playing考查时态。句意：当妈妈到家的时候，小汤姆正在玩电脑游戏。when引导时间状语从句，主句多用进行时，时间发生在过去，故用过去进行时。【典例2】Turnoffthewaterwhileyou______yourteethorwashingyourhands.A.werebrushingB.brushC.arebrushingD.brushed考查时态。句意：当你刷牙或洗手的时候，请关掉水龙头。while引导时间状语从句，时态保持一致，brushing与washing并列；习惯的动作，故选现在进行时。【典例3】—Icalledyouat8:00yesterdayevening,butnoone answered. —Sorry,I______clothesatthattime. A.washB.washedC.amwashingD.waswashing考查时态。句意：—昨晚八点我打电话给你，但是没有人接。—不好意思，那个时候我正在洗衣服。atthattime为过去进行时标志词，选用was/weredoing。Lookatthetableandwritesentenceswithboth

whileand

when.4a1.While

Johnwastakingphotos,Mary

bought

adrink.Johnwastakingphotos

when

Maryboughtadrink.JohnMary延续性非延续性2.WhileJohn__________thepiano,Mary

_____

thehouse.John__________thepianowhen

Mary______

thehouse.Lookatthetableandwritesentenceswithboth

whileand

when.4aJohnMaryplaythepianoleavethehousewasplayingleftwasplayingleftJohnMarycleanhisroom

turnontheradio3.WhileJohn___________hisroom,Mary

______

theradio.John__________hisroomwhen

Mary_______theradio.wascleaningturnedonwascleaningturnedon延续性非延续性延续性非延续性Lookatthetableandwritesentenceswithboth

whileand

when.4aJohnMaryshoptakethecartothecarwashcarwash4.WhileJohn___________,Mary

____

thecartothecarwash.

John__________,

when

Mary_______thecartothecarwash.wasshoppingtookwasshoppingtook延续性非延续性4bFillintheblankswithwas,were,whenorw