unit 4 then and now .pptx

Unit4,Thenandnow,A.Letslearn,Canyouread?,dinninghall,gym,grass,yearsago,monthsago,lastyear,lastmonth,Letsguess,Therearemanybooksinit.Wecanreadbooksinit.Whatisit?,Itsa_.,library,Thereareteachersinit.Theyoftenworkthere.Andyouoftenhandin（上交）yourhomeworkthere.Whatisit?,Itsa_.,teachersoffice,Therearemanycomputershere.Youcanlearnhowtousecomputers.Whatisit?,Itsa_.,computerroom,Therearetwoblackboards.Therearemanydesksandchairsinit.Whatisit?,Itsa_.,classroom,Whatcanyouseeinourclassroom?Thereis/are,now,5yearsago,Whatdifferencescanyoufind?,Fiveyearsago(五年前),therewasno,Fiveyearsago(五年前),therewasno,computer,TV,fan,Whatcanyousee?,grass,Therewasno20yearsago.,gym,Therewasno10monthsago.,dinninghall,Therewasnolastyear.,grass,Therewerenolastmonth.,trees,gobybike,Thereisadininghallintheschoolnow.,Now(现在),Then（那时）,Therewasnodininghallintheschool,Thereisagymintheschoolnow.,Therewasnogymintheschool,Therearesometreesintheschoolnow.,Therewerenotreesintheschool,WuYifansschool,Thereisgrassintheschoolnow.,Therewasnograssintheschool,20yearsago.,10monthsago.,lastyear.,lastmonth.,facilities(设施)gymdininghallpostofficeCaf（咖啡馆）Motel（汽车旅馆）cinematrafficlight（红绿灯）streetlight（路灯）,traffics（交通）gobybikegobybusgobysubwaygobyplane,activities(活动)watchTVusethemobile（使用手机）usetheInternet（使用网络）,Thereare_s.,Peoplegoby_.,Peoplecan_.,Intodaysworld(当今世界)，,IntheTangdynasty(唐朝),Atthattime,therewerenogyms.Peopledidntgobybus.PeoplecouldntusetheInternet.,（在那时）,（不能）,Atthattime,therewereno.,dinninghalls,Atthattime,therewerenopostoffices.,Atthattime,therewerenocinemas.,Atthattime,therewerenomotels(汽车旅馆).,Atthattime,therewerenocafs（咖啡馆）.,Atthattime,therewerenotelephones.,Atthattime,therewerenotrafficlights.,Atthattime,therewerenotrafficlight.,Atthattime,peopl