英语人教版六年级下册Then and now

Unit4Thenandnow,PartALetslearn,Youoftendrawspicturesinit.,Itsan_.,artroom,classrooms,teachersoffice,library,artroom,playground,（T:Whatsthis?Whoseschool?Whatstheschoollike?）,Whereisit?,grass,playground,Whatcanwedoonthegrass?,playfootball（run/jump）,Whereisit?,gym,Whatcanwedointhegym?,playbasketball,playping-pang,playtennis,Whereisit?,dininghall,Whatcanwedointhedininghall?,havelunch,.Grass,grass,playfootballonthegrass.Gym,gym,playping-ponginthegym.Dininghall,dininghall,havelunchinthedininghall,Letschant,ItwasYifansfathersschooltwentyyearsago.,ago以前yearsagomonthsago年以前月以前daysagoweeksago三天前threedaysago一天前onedayago一年以前oneyearago两年以前twoyearsago一个月前onemonthago四个月前fourmonthsago,lastyear去年,lastmonth上个月,还有哪些表示过去的时间？,lastweekend,lastnight,yesterday,thedaybeforeyesterday,lastMonday,Whatarethedifferences?,Therewasnogymintheschooltwentyyearsago.,Nowthereisanewoneintheschool.,Attention:注意使用therebe句型,Whatarethedifferences?,Therewasnointheschooltwentyyearsago.,Nowthereisanewoneintheschool.,Summary（现在某地方有）Thereis_(+可数名词单数或不可数）_now.Thereare_（+可数名词复数）_now.（过去某地方没有）Therewasno_(+可数名词单数或不可数）_ago.Therewereno_（+可数名词复数）_.ago.,Was是is的过去式Were是are的过去式,Forexample:,Therewas/wereno_intheschooltwentyyearsago.,Nowthereis/are_intheschool.,Attention:注意使用therebe句型,twentyyearsago,now,Letssay,Findthemistakes,therewerenogyms,peopledidntgobybus,peoplecouldntusetheInternet,Pairwork,Discusswithyourgroup.FindoutthemistakesintheTangdyna