初中语法数词

数词Numerals数词的考点一.基数词、序数词二.数词的表示法基数词序数词基数词序数词onetwelvetwotwentythreetwenty-onefourfortyfiveonehundredsixonehundredandfiveeightonehundredandtwenty-nineninenineteen一.基数词、序数词firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-firstfortiethonehundredthonehundredandfifthonehundredandtwenty-ninthnineteenth二.基数词的读法1、百位和十位间用and连接,十位和个位间用-连接threehundredandtwenty-one32129,43150076,,thousandhundredmillionbillionand2.)1，000以上数目,从右向左每三位用“，”分开,分别读为thousand,million,billion基数词的构成fourthousandthreehundredandtwenty-onesevenmillion,sixhundredandfiftyfourthousandthreehundredandtwenty-one7,654,3211,987,654,32143214,321onebillionninehundredandeighty-sevenmillion,sixhundredandfifty-fourthousandthreehundredandtwenty-one1.hundredthousand(表示具体数字)millionbillion2.hundredsthousands

(表示概数)

millionsbillions三.基数词的用法数词(several)++ofsome/manyhundreds

of1.—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;hundred序数词的构成1)1－3,first,second,third。2)4－19,相应基数词+th,特殊拼写:fifth,eighth,ninth,twelfth。3)20－90,y变成ie+th,如twentieth。4)21－99,只把个位的基数词变成序数词如twenty-first。5)序数词缩写----数字＋最后两字母

如1st,2nd,3rd,4th…基变序,有规律,一、二、三，特殊记，面目全非要注意，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，(five,twelve)见“y”变成“i”和“e”，词尾加上“th”，(twenty,thirty,……ninety)若是遇到几十几，只变个位就可以。序数词缩写记清楚,数字后跟两字母。(序数词构成规律)①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时间类型表示法例读法整点基数词（+o’clock)1:00﹤30分钟分钟+past+小时2:10=30分钟half+past+小时3:30﹥30分钟（60-分钟）+to+（小时+1）4:40分钟逢15即一刻钟aquarter5:156:45简化法按顺序读基数词7:50oneo’clocktenpasttwohalfpastthreetwentytofiveaquarterpastfiveaquartertosevensevenfifty表示在几点钟用介词at四.数词的表示法—时间1.—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quarteraquarter34threequarters12ahalf13three

andonethird3基数词+and+分数四.数词的表示法—分数百分数80%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=twohours

andahalfoneandahalfhours=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

Thisboxisfivetimes

asbigasthatone.=Thisboxisfourtimesbigger

thanthatone.①

A+be+倍数+as+adj.原+as+B.A是B的…倍…②

C+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.

sixtimesheavierthanseventimesasheavyas一般编码用名词+基数词20