Unit4ThenandnowA.Let’slearnLet'sdo!Therabbitplayshideandseekintheschool.Let’sfindher.捉迷藏Issheinthe_______?No,sheisn’t.gardenMissWangMrLinIssheinthe_____________?No,sheisn’t.teachers’officeIssheinthe______?Haha,I’mhere!gardenMissWangMrLinteachers’officecomputerroomlibraryplaygroundWhat’sthis?It’sgrass.grassWhatcanyoudoonthegrass?Icanplayfootballonthegrass.Youcanplaybasketballinit.SometimesyouhaveaP.Eclassinit.Guess.Whatisit?猜一猜！gymIplayedping-ponginthegymthreedaysago.三天前

threedaysago一天前onedayago五天前fivedaysago兩年前twoyearsago四個月前fourmonthsago還有哪些表示過去的時間？lastweekendlastnightyesterdaythedaybeforeyesterday

lastyear去年

lastmonth上個月What’sthis?WallFloorBoardIt’sawall.wallfallballhallhall大廳、禮堂diningWeoftenhavelunchinthedininghall.Saythechant！Playground,playground.Let’srun,let’srun.Grass,grass.Playfootball,playfootball.Gym,gym.Playping-pong,playping-pong.Dininghall,dininghall.Havelunch,havelunch.Itwastheschooltwentyyearsago.iswas過去式Therewasnogymtwentyyearsago.Therewasaplaygroundtwentyyearsago.MissWangMrLinThere____ateachers’officetwentyyears____.wasagoThere________computerroomtwentyyearsago.wasnoarewereThere_____6classroomstwentyyearsago.were過去式Itwasthe______twentyyearsago.There____ateachers’office.Therewere6_________inourschool.Therewasa__________.Weranonit.Therewas____gym.Therewasno________room.Itwasold.ButIloveit.

schoolwasclassroomsplaygroundnocomputerWhatarethedifferences?twentyyearsagonowWasthereagymintheschool？No,itwasn't.Isthereagymintheschool？Yes,itis.Whatarethedifferences?Therewasnogymintheschooltwentyyearsago.Now

thereisanewoneintheschool.Attention:注意使用therebe句型Let'ssayForexample:Therewasno____intheschooltwentyyearsago.Now

thereisanewoneintheschool.Attention:注意使用therebe句型Findthemistakestherewerenogymspeopledidn'tgobybuspeoplecouldn'tusetheInternetmistakesbuildings（建筑）gymdininghallpostofficecoffeeshopmotelcinematrafficlight（紅綠燈）streetlight（路燈）traffic（交通）gobybusgobybikeactivities(活動)watchTVusethephoneusetheInternetAtthattime，therewerenogyms.Peopledidn'tgobybus.Peoplecouldn'tusetheInternet.Atthattime,therewereno____s.Peopledidn