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Lesson20ChrismasTreeYesterdaymydad_______(buy)aChrismastree!Let’s____it____.It’sfun.boughtputupHowtoputupaChristmastree?First,I’mgoingto___thelights___thetree.putonThenI’mgoingtoputChrismasthingsonthetree.Now,we___ourgifts____thetree.putunderThestaralways____ontop.goesThere!It’s_____!It’sbeautiful!done一般过去时动词变化规则：1.+ed2.以e结尾+d：like3.辅音+y结尾，变y为i+es：study4.辅元辅结尾双写+ed：plan5.不规则变化句子结构：主语+动词过去式+其它Dannywalkedtoschoolyesterday.动词变为过去式：walk---walked;buy---bought;bring---brought;see---saw;go---went;sing---sang;teach---taughtIcanreadwalk—walkedbuy—boughtsee—sawbring—broughtgo—wentteach—taughtfall—fellhave—hadam/is—wasare—werewherewearIcansayDannywalkedtoschool.Mrs.Smithsboughtacarf.IbroughtaChristmastreetomyfamilyIcanchangeDannywalkedtoschool.Mrs.Smithsboughtacarf.IbroughtaChristmastreetomyfamily.特殊疑问句：特殊疑问词+一般疑问句特殊疑问词：who谁what什么when什么时候how怎么where哪里howmany多少一般现在时（含实义动词时）动词三单变化规则：1.+s2.以s,x,ch,sh,o结尾+es：wash，watch，do，go，pass，miss3.辅音+y结尾，变y为i+es：fly，carry，try句子结构：主语（非三单）+动词原形+其它Theygotoschoolbybus.主语（三单）+动词三单形式+其它Xiaonagoestoschoolbycar.Translation1.史密斯夫人经常买一些礼物。否定：一般疑问：2.Cici每天晚饭后写作业。Mrs.Smithoftenbuyssomegifts.Cicidoesherhomeworkaftersuppereveryday.Mrs.Smithdoesn’toftenbuyanygifts.DoesMrs.Smithoftenbuyanygifts?时间状语：always，usually，never，everyweek/month/year,onSunday…一般将来时句子结构：主语+begoingto(打算)+动词原形+其它Iamgoingtobringastarforthetree.注意begoingtodo:1.be随主语变化2.动词用原形，不需要变化Translation1.丹尼打算明天步行去公园。2.李明打算下周教丹尼学滑冰。Dannyisgoingtowalktoschooltomorrow.LiMingisgoingtoteachDannytoskatenextweek.时间状语：nextmonth/year/Monday,Inthefuture,oneday