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Numbers2018中考英语专项复习数词一.基数词、序数词二.数词的表示法基数词1.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．C．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-eightD．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-seventhousandeighthundredandninety“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”1.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/manyhundredsof1)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．320threehundredandtwenty3．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）．1.—Ifa=3,b=4,what’stheanswertotheproblem,a+2ab+1=?—theansweris___.A.twentyeightB.twenty-eighthC.twenty-eight2.Inourschoolseveral__studentsareabletosearchtheInternet.A.hunderdofB.hunderdsofC.hundred3.Many__sheepwerekilledintheaccident.A.thousandsofB.thousandC.thousands4.Thereareovernine__workersinthefactory,but__ofyoungpeoplehopetoworkinit.A.hundred;hundredsB.hundreds;hundredsC.hundreds;hundred①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1.Theaccidenthappenedon___.A.April5,2001B.2001,April5C.April2001,52.Iwasborn___.A.inMarch8,1993B.onJuly9,1994C.onMay,199520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nineteennineties1.Therewillbemorechancesin__centurythanin__century.A.twenty-one,twentyB.twenty-first,twentiethC.thetwenty-first,thetwentieth2.Thecitychangedalot___.A.in1980sB.inthe1980sC.inthe19803.Hegraduatedin__of__century.A.thesixtieth;twentyB.sixty;thetwentiethC.thesixties;thetwentieth4.Hegottheprize__.A.inhisfiftiesB.infiftiesC.inhisfifty时间和钟点时间的表达方式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-sixtenpastfivetwopasttwo②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/anhourandahalfoneandahalfhoursCanyoureadthem?1:302:15:3:456:387:259:50onethirtyhalfpastonetwofifteenaquarter/fifteenpasttwothreeforty-fiveaquarter/fifteentofoursixthirty-eighttwenty-twotoseventwentyfivepastsevenseventwenty-fivetentotenninefifty三年半的两种表达方式:threeyearsandahalfthreeandahalfyears1.—It’salready7:40now.Whenwillthefilmstart?—___.Westillhavefiveminutes.A.AquartertosevenB.Sevenpastforty-fiveC.Aquartertoeight15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-quartersthreepointsixfiftypercent80%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3.78threepointseveneight1.__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;twothirds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.twobottleandahalf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1.Thisbuildingis__thatbuilding.A.threetimeastallasB.twicetallerthanC.threetimesastalleras2.我的箱子比你的重六倍!Myboxis____________________yours.sixtimesheavierthanseventimesasheavyas①Thewinneris___.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①Theriverisabout____.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10.Hewentdowntothevillagewhichwas___milesawayfromthecity.A.threehundredsB.threehundredC.threehundredsofB.threehundred6．Thewallis____.A．fourmeterslongB．fourmeterlongC．four-meterlong7．What'sthedatetoda