最新8A牛津版Unit-2--Numbers课文及重点

Unit2NumbersThekingandthericeAlongtimeago,therewasakinginIndia.Theking’sfavouritegamewaschess.Oneday,anoldwisemancametothepalaceandthekingchallengedhimtoagame.Thekingpromisedtheoldman,“Youcanhaveanyprize,ifyouwinthegame.”Theoldmansaid“IfIwinthegame,I’dlikeonegrainofriceforthefirstsquareofthechessboard,twoforthesecond,fourforthethirdandthendoubletheamountforeachoftherestofthesquares.“Isthatall?”askedtheking.“Wouldn’tyoulikegoldorsilverinstead?”“No,justrice,”repliedtheoldman.Thekingandtheoldmanplayedthegameforalongtime.Finally,theoldmanwon.Sothekingorderedhismentocollectabagofrice.Heputonegrainonthefirstsquare,twoonthesecond,andsoon.Thekingquicklyrealizedtheproblem-------evenwithallthericeinthecountry,hewouldstillnothaveenoughricetoputonallthesquares!1.checkin登记checkup检验checkout办清手续后离开2.基数词+单位名称（metre,feet,kilometer等）+adj（long,wide,high等）3.playchess下象棋playwith玩耍4.favouriteadj.最喜欢的，（无比较级和最高级）5.oneday(过去，将来）的某一天someday(将来）的某一天6.therestof剩余的……havearest休息下7.promisesbsth答应给某人某物promisesbtodosth答应某人做某事makeapromise许诺8.wouldlikesth想要某物wouldliketodosth想要做某事wouldlikesbtodosth想要某人做某事9.instead（句首，句末）代替，而不是insteadof代替，而不是10.特殊疑问词+todo11.realizesth意思到……realizethat意思到……12.enough+n.或n.+enough足够多的……Adj+enough足够……13.talktosb和某人谈话（暗含上级对下级的意思）talkwithsb和某人谈话talkaboutsth谈论某事14.advicen.（不可数）someadvice一些建议apieceofadvice一条建议givesbadvice给某人建议15.follow/takeone’sadvice听从某人的建议16.abagof...一包……17.andsoon等等CountingbeforenumbersBeforetheinventionofwrittennumbers,peopleusedmanydifferentwaystocountthings.Atfirst,peopleusetheirfingers,andeventheirtoes.However,theycouldonlycountsmallnumbersinthisway.Afterthat,theybegantomakesmallmarksonsticksandbones.Thishelpedthemcountbiggernumbers.Theyusedthemtocountthedaysofthemonth,theamountoffoodandthenumberofanimalstheyhave.Thenpeoplebegantousetokensmadefromclayorsmallstones.Thishelpedthemcountevenbiggernumbers.Theyoftenputthetokensonpiecesofstringsothattheycouldcarrythemaroundeasily.Thisdevelopedintotoolsliketheabacus.Finally,peoplebegantodevelopsystemsofwrittenmarkstoshowdifferentnumbers,andthisledtotheHindu---Arabicsystem(0-9).Wearestillusingthissystemtoday.1.atfirst起初，开始2.apieceofstring一根绳子3.developinto发展成……4.leadsbto...带某人去……leadsbtodosth带领某人做某事5.agreewithsb同意某人agreetodosth同意做某事6.not...anymore=nomore=not....anylonger=nolonger不再7.takeplace发生happen发生8.atonce立刻9.asusual和往常一样10.keepyourdream坚持你的梦想11.not.....atall一点也不12.besides除了……还有exceptfor除了……（不同类）except除了……（同类）but除了13.belatefor迟到14.allyearround全年，整年15.ordersbtodosth命令某人做某事