Unit4ThenandnowPartALet'slearnYoucanreadbooksinit.Whatisit?It’sa___________.libraryThereareteachersinit.Theyoftenworkthere.Andyouoftenhankin（上交）yourhomeworkthere.Whatisit?It’sa___________________.teachers’officeYouoftensingsongsinit.It’sa______________.musicroomYouoftendrawspicturesinit.It’san______________.artroom（T:What’sthis?Whoseschool?What’stheschoollike?）Whereisit?grassplaygroundWhatcanwedoonthegrass?playfootball（run/jump）Whereisit?gymWhatcanwedointhegym?playbasketballplayping-pangplaytennisWhereisit?dininghallWhatcanwedointhedininghall?havelunchWhereisit?motel汽车旅馆hThedifferencebetweenhotelandmotelMotels'parkingspace（停车位）androomarelinkedtogether(相连).Thegarage(车库)isonthefirstfloor,theroomisonthesecondfloor.汽车旅馆与一般旅馆最大的不同点，在于汽车旅馆提供的停车位与房间相连，一楼当作车库，二楼为房间。gymIplayedping-ponginthegymthreedaysago.三天前threedaysago一天前onedayago五天前fivedaysago两年前twoyearsago四个月前fourmonthsago一年前oneyearago还有哪些表示过去的时间？lastweekendlastnightyesterdaythedaybeforeyesterdaylastyear去年lastmonth上个月oneyearagotwoyearsagothreedaysagogymgrassdininghallfourmonthsagomotel单词竞赛（2分钟速记）onemonthagolastyear＝lastmonththreemonthsagotwoyearsagograssdininghallWhatarethedifferences?twentyyearsagonowWasthereagymintheschool？No,itwasn't.Isthereagymintheschool？Yes,itis.Whatarethedifferences?Therewasnogymintheschooltwentyyearsago.Nowthereisanewoneintheschool.Attention:注意使用therebe句型Now10minutesagoThereisonlyonehorseonthegrassnow.Thereweremanyhorsesonthegrass10minutesago.Now1houragoThereisnopeopleinthegymnow.Thereweremanypeopleinthegym1hourago.Now3daysagoThereisaTVinthedininghallnow.TherewasnoTVinthedininghall3daysago.Summary（现在地方有）Thereis___(+可数名词单数或不可数）____now.are__（+可数名词复数）__________（过去地方有）Therewas__(+可数名词单数或不可数）___…ago.were__（+可数名词复数）________Forexample:Therewas/wereno____intheschooltwentyyearsago.Nowthereis/are_____intheschool.Attention:注意使用therebe句型twentyyearsagonowtherewerenogymspeopledidn'tgobybuspeoplecouldn'tusetheInternetmistakesbuildings（建筑）gymdininghallpostofficecoffeeshopmotelcinematrafficlight（红绿灯）streetlight（路灯）traffic（交通）gobybusgobybikeactivities(活动)watchTVusethephoneusetheInternetAtthattime，therewerenogyms.Peopledidn'tgobybus.Peoplecouldn'tusetheInternet.Discusswithyourgroup.FindoutthemistakesintheTangdynasty.Atthattime，therewere/wasno______.Peopledidn'tgo________.Peoplecouldn'tuse_______.