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Numbers2018中考英语专项复习数词1一.基数词、序数词二.数词的表示法2基数词31.基数词表示数目的词称为基数词。其形式如下:A.1——10one,two,three,four,five,sixseven,eight,nine,ten.B.11——19eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen.4C.21——99表示几十几时,在十位和个位之间添加连字符“-”2132435465768798twenty-oneforty-threethirty-twofifty-foursixty-fiveseventy-sixeighty-sevenninety-eight5D.百位数三位数以上的基数词,在百位和十位一般要用“and”连接。101320648E.千位数以上从数字的右端向左端数起,每三位数加一个逗号“,”。从右开始,第一个“,”为thousand,第二个“,”为million,第三个“,”为billion。如:1,234,567,890one/ahundredandonethreehundredandtwentysixhundredandforty-eightonebilliontwohundredandthirty-fourmillionfivehundredandsixty-seventhousandeighthundredandninety6“1509”(1)Ifitisanamount(数量)1,509readslikethisonethousandfivehundredandnine(2)Ifitisadate(日期)1509readslikethisfifteenzeronine(3)Ifitisatelephonenumber(电话号码)1509readslikethisonefiveonine“0”在英语里读成“o”or“zero”71.hundredthousand(表示具体数字)millionbillion2.hundredsthousands(表示概数)millionsbillions三.基数词的用法数词two(several)++ofsome/manyhundredsof81)基数词表示确切的数时,不用复数形式.2)表示不确切数,如成百、成千上万,则用复数。Therearehundredsofpeopleinthehall.320threehundredandtwenty93.人的不确切岁数或年代,用几十的复数形式。Hebecameaprofessorinhisthirties.Itwasinthe1960s.4.基数词的句法功能可作主语、宾语、定语、表语、同位语。Thetwohappilyopenedthebox.(作主语)Theythreetriedtofinishthetask(作同位语).101.—Ifa=3,b=4,what’stheanswertotheproblem,a+2ab+1=?—theansweris___.A.twentyeightB.twenty-eighthC.twenty-eight2.Inourschoolseveral__studentsareabletosearchtheInternet.A.hunderdofB.hunderdsofC.hundred113.Many__sheepwerekilledintheaccident.A.thousandsofB.thousandC.thousands4.Thereareovernine__workersinthefactory,but__ofyoungpeoplehopetoworkinit.A.hundred;hundredsB.hundreds;hundredsC.hundreds;hundred12①月日年在2008年10月1日四.数词的表示法—年月日onOctorberthefirst,twothousandandeight日the+序数词月(首字母大写)月日与年之间用,分开年(两位两位读)onAugusttheninthinMay,twothousandandten有日用on无日用inonOct.1st,2008②月日在8月9日③月年在2010年5月131.Theaccidenthappenedon___.A.April5,2001B.2001,April5C.April2001,52.Iwasborn___.A.inMarch8,1993B.onJuly9,1994C.onMay,19951420世纪90年代inthe1990s在他50多岁时inhisfifties四.数词的表示法—年代世纪intheinone’s+整十基数词复数在某人几十岁时nineteennineties151.Therewillbemorechancesin__centurythanin__century.A.twenty-one,twentyB.twenty-first,twentiethC.thetwenty-first,thetwentieth2.Thecitychangedalot___.A.in1980sB.inthe1980sC.inthe1980163.Hegraduatedin__of__century.A.thesixtieth;twentyB.sixty;thetwentiethC.thesixties;thetwentieth4.Hegottheprize__.A.inhisfiftiesB.infiftiesC.inhisfifty17时间和钟点18时间的表达方式1.直接表达法。即先读小时,再读分钟如:4:10读成8:36读成2.逆读法。即先读分钟,再读小时①分钟小于30的用“past”,中文译为“过”。即分钟+past+时钟,中文译为“几点过几分”如:5:10(5点过10分)读成2:02(2点过2分)读成fourteneightthirty-sixtenpastfivetwopasttwo19②分钟超过30(不包括30分钟)用“to”(中文译为“差”)即“60-分钟数+to+钟点数+1”(中文译为:几点差几分)如:7:45(八点差15分)读成1:58(两点差2分)读成3.半小时用“half”,一刻钟用“quarter”。注意:一刻钟aquarter三刻钟threequarters如:4:30读成9:45读成aquartertotentwototwohalfpastfourfifteentoeight特别注意:一个半小时的表达方式:one/anhourandahalfoneandahalfhours20Canyoureadthem?1:302:15:3:456:387:259:50onethirtyhalfpastonetwofifteenaquarter/fifteenpasttwothreeforty-fiveaquarter/fifteentofoursixthirty-eighttwenty-twotoseventwentyfivepastsevenseventwenty-fivetentotenninefifty三年半的两种表达方式:threeyearsandahalfthreeandahalfyears211.—It’salready7:40now.Whenwillthefilmstart?—___.Westillhavefiveminutes.A.AquartertosevenB.Sevenpastforty-fiveC.Aquartertoeight2215分子基数词分母序数词onefifth27分子﹥1分母+stwosevenths14分子a分母quarteraquarter34threequarters12ahalf13threeandonethird3基数词+and+分数四.数词的表示法—分数百分数23分数、百分数、小数的表达方法(以分数考法较为常见)1.分数:分子用基数词,分母用序数词,分子大于一,分母加s1/2读作2/3读作1/13读作3/4读作2.小数,百分数的读法:小数点读成point3.6读作百分号%读成percent50%读作onesecond(ahalf)twothirds或者two-thirdsonethirteenththreefourths或者three-quartersthreepointsixfiftypercent2480%基数词+percenteightypercenthalf/(百)分数+of+可数名词复数谓语动词用复数half/(百)分数+of+不可数名词谓语动词用单数3.78threepointseveneight251.__ofthestudents__boysinClassA.Twothree;areB.Twothirds;areC.Twothirds;is2.__ofhermoney__spentonclothes.A.Twothree;areB.Twothirds;isC.Twothird;is3.__theteachersinourschoolisaboutonehundred,and__ofthemarewomenteachers.A.Thenumberof;twothirdB.Thenumberof;twothirdsC.Anumberof;twothirds26一个半小时两个半小时twoandahalfhours=twohoursandahalfoneandahalfhours=onehourandahalf四.数词的表示法—半的表示法1.Theboyalwaysstaystherefor__.A.oneandhalfhourB.oneandahalfhourC.oneandahalfhours2.Theoldmandrank__beer.A.twobottlesandahalfB.twoandahalfbottleC.twobottleandahalf27一倍once,两倍twice,三倍threetimes(三倍或以上基数词+times)四.数词的表示法—倍数Thisboxisfivetimesasbigasthatone.=Thisboxisfourtimesbiggerthanthatone.①A+be+倍数+as+adj.原+as+B.A是B的…倍…②C+be+倍数+adj.比+than+D.C比D……倍281.Thisbuildingis__thatbuilding.A.threetimeastallasB.twicetallerthanC.threetimesastalleras2.我的箱子比你的重六倍!Myboxis____________________yours.sixtimesheavierthanseventimesasheavyas29①Thewinneris___.Heisan___boy.A.eight-year-old;eightyearsoldB.eightyearsold;eight-year-oldC.eight-yearsold;eight-year-old②HecametoChina____.A.attheageof20B.whenheis20C.atageof20四.数词的表示法—年龄30①Theriverisabout____.A.6,000meterslongB.6,000-meters-longC.6,000-meter-long四.数词的表示法—计量be+数词+量词+形容词3110.Hewentdowntothevillagewhichwas___milesawayfromthecity.A.threehundredsB.threehundredC.threehundredsofB.threehundred326.Thewallis____.A.fourmeter
本文标题:中考专项复习之数词学习课件
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