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Unit3WhatwereyoudoingwhentheUFOarrived?at4:00yesterdayafternoonat7:00thismorningatthistimeyesterdayat3:00lastSaturdayAMemoryCompetitionWhatweretheydoingwhentheUFOarrived?Whathappenednext?____ThealienvisitedtheMuseumofFlight.____Thealienboughtasouvenir.____AUFOlandedonCenterStreet.____Thealienwentintoastore.____AnaliengotoutoftheUFO.54132Listenandnumberthesestatementsinthecorrectorder.1.TheboywaswalkingdownthestreetaUFOlanded.2.Thegirlwasshoppingshesawthealiengetout.3.thealienwasbuyingasouvenir,thegirlcalledthepolice.4.thealienwasvisitingthemuseum,theboycalledtheTVstation.Listenagainandcompletethesentences.whenwhenWhileWhileWheredidtheUFOland?WhosawtheUFOlandonCenterstreet?WhatwastheboydoingwhentheUFOlanded?“when”and“while”When后面跟的动作不延续，如come,go,leave,begin…While后面跟的动作延续，一般用进行时，如walk,shop,wait,sleep…探索发现A:WhatwasthegirldoingwhentheUFOtookoff?B:Whilethegirlwas…,C:WhentheUFOtookoff,themanwas…eatanice-creamtakephotosrideabiketalkwithapolicemanGroupworkcallherupsleep____Conancalledherup,shewassleeping.Conancalledherup____shewassleeping.知识运用Whenwhilebegintocooklistentomusic____theybegantocook,theboywaslisteningtomusic.Theybegantocook____theboywaslisteningtomusic.WhenWhilesleepbegintoeatWhilethebaby,shebegantoeat.Thebabywassleepingwhenshetoeat.wassleepingbegancallherupdohomeworkWhenhe__________herup,shewasdoinghomework.Whileshe___________homework,hecalledherup.calledwasdoingExercises•1.He__________(draw)ateightyesterdayevening.•2.Thegirl___________(shop)whenherfriend____(see)her.•3.Whilehe__________(cook)dinner,hisfriend_____(get)outoftheshower.•4.TheysawtheUFOwhilethey_________(walk)downthestreet.牛刀小试