英语人教版六年级下册Unit4 Then and Now

Unit4Thenandnow那时和现在,Time（时间）的表达：,yesterday昨天,lastnight昨天晚上,thedaybeforeyesterday前天,lastweekend,lastMonday上一个Tuesday-Sunday,lastweek/lastmonth/lastyear,过去的时间的表达方式：,-day(s)ago(以前）天1dayago/2daysago/4daysago-month(s)ago月1monthago/3monthsago/8monthsago-year(s)ago年1yearago/4yearsago/20yearsago-,不规则动词1:动词原形-不加ed,有自己的变化-动词过去式is,am-wasare-weredo-didcan-could,think-thought（想，认为）feel-felt（感觉）wake-woke（醒）,dininghall,gym,grass,now,lastmonth,ThereisaTVinthedininghallnow.,TherewasnoTVinthedininghalllastmonth.,Now,3daysago,Thereisahorseonthegrassnow.,Therewasnohorseonthegrass3daysago.,Thereisadininghallintheschoolnow.,Now,twentyyearsago,Therewasnodininghallintheschooltwentyyearsago.,Thereisagymintheschoolnow.,Therewasnogymintheschooltwentyyearsago.,Thereisgrassintheschoolnow.,Therewasnograssintheschooltwentyyearsago.,WuYifansschool,Now,3daysago,Thereare3horsesonthegrassnow.,Thereweremanyhorsesonthegrass3daysago.,10daysago,Thereweremanyhorsesonthegrass3daysago.,Therewerenohorsesonthegrass10daysago.,3daysago,Therearemanycomputersinourclassroomnow.,Therewerenocomputersinourclassroom15yearsago.,Now,yesterday,Therearenopeopleinthegymnow.,Thereweremanypeopleinthegymyesterday.,Atthattime,therewereno_.,gyms,Tangdynasty,Findthemistakes,Therewerenocinemas.Therewerenotrafficlightsorcomputers.,Peopledidntgobybus.(否定句）Peopledidntgobytaxi.,PeoplecouldntusetheInternet.Peoplecouldntrideabike.Peoplecouldntusethetelephone.,Summary:1.Thereis_(名词单数或不可数）+地点+now.are_（名词复数）+地点+now.（现在有）2.Therewas_(名词单数或不可数）+地点+过去时间were_（名词复数）+地点+过去时间.(过去有)3.Therewasno_(名词单数或不可数）+地点+过去时间.wereno_（名词复数）+地点+过去时间.（过去没有）,Icouldntrideabikebefore.Ithoughtitwasdifficult.ButnowIcanrideit.Iloveit.,Id