八年级下册英语(人教版)Unit3课件.ppt

WhatwereyoudoingwhentheUFOarrived?,Period1SectionA1a-2c,Whataretheydoing?,Theyarerunning.,Whatishedoing?,Heisplayingtennis.,Whatisthemandoing?,Heiseatingbread.,Hewascookingatthistimeyesterday.,Whatwashedoingatthistimeyesterday?,Whatweretheydoingat2:00yesterdayafternoon?,Weretheyplaying?,No,theywerent.Theyweredoinghomework.,UFOUnidentifiedFlyingObject,WhatwashedoingwhentheUFOarrived?,Hewastakingashower.,Hewasintheliving-room.,WherewashewhentheUFOarrived?,Wherewashe?Whatwashedoing,Matchthestatementwiththepeopleinthepicture._Iwasinthebathroom._Iwasinmybedroom._Iwasinfrontofthelibrary._Iwasinthekitchen._Iwasinmybarbershop._Iwasinthebarberschair.,E,C,A,B,D,F,Listentothereportersquestionsandcirclethecorrectresponses.,a.Standinginfrontofthelibrary/studyinginthelibrary,b.Cleaningmyroom/sleepinglate,c.Makingamilkshake/cookingdinner,d.Gettingoutoftheshower/talkingonthephone,e.Eatinglunch/cuttinghair,A:WherewasthegirlwhentheUFOarrived?B:Shewasinfrontofthelibrary.A:WhatwasshedoingwhentheUFOarrived?B:Shewasstandinginfrontofthelibrary.,Pairwork:,TheboywasplayingbasketballwhentheUFOarrived.,WhatwashedoingwhentheUFOarrived?,WhilehewasplayingbasketballtheUFOarrived.,WhathappenedtoTed?,Whatdidhesee?,Listenandnumberthestatementsintheorderyouhearthem.,1,2,3,4,5,过去进行时,构成,用法,“was/were+v-ing”,表示在过去某一时刻或某一段时间内正在进行或发生的动作。,时间状语,atthattimeatthistimeyesterday/lastatoclockyesterday/last.whensbdidsth,过去进行时,Summary,过去进行时讲解,构成：was/were+v-ing（其中was是am、is的过去式，were是are的过去式）e.g.Iwasdoingmyhomeworkthen.那时，我正在做作业。用法：1）过去进行时表现过去某一时刻正在进行的动作。2）过去进行时还表示过去某阶段正在进行的动作。e.g.Theywerewaitingforyouyesterday.他们昨天一直在等你。,三、以when和while引导的时间状语从句1）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。2）非延续性动词指动作极为短暂，瞬间结束。如：start,begin,arrive,jump,go,finish,borrow,knock等。when表示“当的时候”。它后面既可跟延续性动词，又可跟非延续性动词.如：MarywashavingdinnerwhenIsawher.(当我看到玛丽的时候,她正在吃饭.)while表示“在的时候”、“在期间”。while后面必须是表示动作或状态的延续性动词。如：TheweatherwasfinewhilewewereinBeijing.(当我们在北京的时候天气很好.)所以,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。while总是指一个时间段，从句中必须用延续性动词。,比较“when”and“while”,2.WhentheUFOlanded,theboywaswalkingdownthestreet.Whiletheboywaswalkingdownthestreet,theUFOlanded,1.Whenthealiengotout,thegirlwasshopping.Whilethegirlwasshopping,thealiengotout.,=,=,一、用while或when填空1.Thegirlwasshopping_thealiengotout.2._thegirlwasshopping,thealiengotout.3.Iwasdoingmyhomework_mymothercamein.4._Iwasdoingmyhomework,mymothercamein.5.Hecalledtoseeme_Iwaslookingformybag.6._weweretalking,Dadgothome.7._Iwassittinginthebarberschair,myfriendphonedme.8.TheGreenswerehavingdinner_Ivisitedthem.9.Whatdidyoudo_theUFOlanded?,1.Theboywaswalkingdownthestreet_aUFOlanded.2.Thegirlwasshopping_shesawthealiengotout.3._thealienwasbuyingasouvenir,thegirlcalledthepolice.4._thealienwasvisitingthemuseum,theboycalledtheTVstation.,when,when,While,While,Listenagain.Completethefollowingsentenceswith“when”and“while”,Exercises1,一、用所给单词的适当形式填空1.Maryofen_upatsixoclock.Butshe_(notget)upatthistimeyesterday.2.WhenIcamein,Alice_(lie)inbed.3._(notbe)lateagain.Pleasegettoschoolontime.4.Theplane_(takeoff)afiveminutesago.5.Whilethereporter_(take)aphoto,thecatclimbedthetree,2.Theyoungman_thetree_amansawhimandaskedhimtoJumpdown.,wasclimbing,when,Makethesentences,_theyoungmanwasclimbingthetree,amansawhimandaskedhimtojumpdown.,While,1._John_toschoolyesterday,hesawacatinatree.,While,waswalking,Makethesentences,Johnwaswalkingtoschoolyesterday_he_acatinatree.,saw,when,Exercises,Choose“when”or“while”tofillintheblanks.(1)Iwaswalkinginthestreet_theaccidenthappened.(2)_youhaveameeting,youshouldturnedoffyourmobilephone.(3)_youhavePEclass,youshouldwearsportsshoes.(4)_Iwasdoingmyhomework,thetelephonerang.(5)_itwasraining,theplanetookoff.(6)_theteacherwasspeakingtoclass,Nickstoodupsuddenly.,when,when,when,while,While,While,Exercises,7.He_(draw)ateightyesterdayevening.8.Thetwins_(shop)whentheirfriend_(see)themyesterday.9.Whilehe_(cook)dinner,hisfriend_(get)outoftheshower.10.HesawtheUFOwhilehe_(walk)downthestreet.,wasdrawing,wereshopping,saw,wascooking,got,waswalking,Homework:1.Fillinthechartandmakeaconversationinthree.,Likethis:A:Whatwereyoudoingatyesterday?B:Iwas.A:Whatwereyoudoing?C:Iwas.A:Whatwashe/shedoing?B/C:He/Shewas.,Period2SectionA3a-4,Ms.Lin,yesterdaymorning,yesterdayafternoon,yesterdayevening,Mr.Green,yesterdaymorning,whentheUFOarrived,A:WherewasthegirlwhentheUFOarrived?B:Shewasinthebedroom.A:WhatwasshedoingwhentheUFOarrived?B:Shewassleeping.,Pairwork:,TheboywasplayingbasketballwhentheUFOarrived.,WhatwashedoingwhentheUFOarrived?,WhilehewasplayingbasketballtheUFOarrived.,WhatwasshedoingwhentheUFOarrived?,ShewasskatingwhentheUFOarrived.,WhileshewasskatingtheUFOarrived.,2.Theyoungman_thetree_amansawhimandaskedhimtoJumpdown.,wasclimbing,when,Makethesentences,_theyoungmanwasclimbingthetree,amansawhimandaskedhimtojumpdown.,While,Jay_whenIsawhim.,wasridingabicycle,He_inthelakewhileIwaswalkingbythelake.,wasswimming,They_whenIleftschool.,were,playing,basketball,Whilehermother_,sheknockedat(敲门)thedoor.,was,cooking,3a:,5,3,4,2,1,Trytofindouttheanswerstothefollowingquestions.,1.DidTedoftenseetheUFO?Howdoyouknowthat?,2.WhatdidTedthinkoftheUFO?,3.Wheredidthealiengo?,4.WhendidthereporteroftheTVstationcome?,No,hethoughtthatwasaveryunusualexperience.,HethoughtthattheUFOwasstrange.,ItwenttoasouvenirstoreandtheMuseumofFlight.,Whilethealienwasatthemuseum,TedcalledtheTVstation.,Fillintheblankswiththeproperwords.,Ihadavery_experience_Sunday.At_tenoclockinthemorning,Iwas_downthestreet_aUFOlanded_infrontofme.Youcan_how_itwas!Analien_and_CenterStreet.Ifollowedittosee_itwasgoing,andIwasvery_whenitwentintoasouvenirshop._itwas_atthesouvenirs,theshop_calledthepolice.Beforethepolicearrived,the_lefttheshopandthen_theMuseumofFlight.Whilethealienwas_themuseum,IcalledtheTVstation.Isntthat_!,unusual,on,around,walking,when,right,imagine,strange,got,walked,down,where,surprised,While,looking,assistant,alien,visited,in,amazing,out,A:WhatwereyoudoingatnineoclocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:Yourekidding!,Groupwork,WhatwereyoudoingatthesetimeslastSunday?Fillinthetable.Theninterviewtwoclassmates.,Period3SectionB1-3,Thewomanisclimbingthetree.,Themanisshouting.,Themanisjumpingdown.,Themanisscared.,scared,Thesnakeisscary.,d,d,b,a,eJohn,dthewoman,athenewspaperreporter,fthepoliceofficer,cthecat,btheman,Who,A:WhileJohnwaswalkingtoschoolB:whileJohnwaswalkingtoschool,hesawacatinatree.C:right,whileJohnwasclimbingthetree.,climbthetree(John),takethephoto(thenewspaperreporter),callthepolice(theman),seeJohn(aman),callthenewspaper(awoman),goupthetree(thecat),Talkaboutthepeopleinactivity2a.,Pairwork,Readthearticle.Thenwriteanswerstothequestions.,1.WhatwasLind