數(shù)詞Numerals數(shù)詞的考點(diǎn)一.基數(shù)詞、序數(shù)詞二.數(shù)詞的表示法基數(shù)詞序數(shù)詞基數(shù)詞序數(shù)詞onetwelvetwotwentythreetwenty-onefourfortyfiveonehundredsixonehundredandfiveeightonehundredandtwenty-nineninenineteen一.基數(shù)詞、序數(shù)詞firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-firstfortiethonehundredthonehundredandfifthonehundredandtwenty-ninthnineteenth二.基數(shù)詞的讀法1、百位和十位間用and連接,十位和個(gè)位間用-連接threehundredandtwenty-one32129,43150076,,thousandhundredmillionbillionand2.)1，000以上數(shù)目,從右向左每三位用“，”分開,分別讀為thousand,million,billion基數(shù)詞的構(gòu)成fourthousandthreehundredandtwenty-onesevenmillion,sixhundredandfiftyfourthousandthreehundredandtwenty-one7,654,3211,987,654,32143214,321onebillionninehundredandeighty-sevenmillion,sixhundredandfifty-fourthousandthreehundredandtwenty-one1.hundredthousand(表示具體數(shù)字)millionbillion2.hundredsthousands

(表示概數(shù))

millionsbillions三.基數(shù)詞的用法數(shù)詞(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序數(shù)詞的構(gòu)成1)1－3,first,second,third。2)4－19,相應(yīng)基數(shù)詞+th,特殊拼寫:fifth,eighth,ninth,twelfth。3)20－90,y變成ie+th,如twentieth。4)21－99,只把個(gè)位的基數(shù)詞變成序數(shù)詞如twenty-first。5)序數(shù)詞縮寫----數(shù)字＋最后兩字母

如1st,2nd,3rd,4th…基變序,有規(guī)律,一、二、三，特殊記，面目全非要注意，加th從4起，八少“t”，九去“e”，“ve”要用“f”替，(five,twelve)見“y”變成“i”和“e”，詞尾加上“th”，(twenty,thirty,……ninety)若是遇到幾十幾，只變個(gè)位就可以。序數(shù)詞縮寫記清楚,數(shù)字后跟兩字母。(序數(shù)詞構(gòu)成規(guī)律)①月日年在2008年10月1日四.數(shù)詞的表示法—年月日onOctorberthefirst,twothousandandeight日the+序數(shù)詞月（首字母大寫）月日與年之間用，分開年（兩位兩位讀）onAugusttheninthinMay,twothousandandten有日用on無日用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世紀(jì)90年代inthe1990s在他50多歲時(shí)inhisfifties四.數(shù)詞的表示法—年代世紀(jì)intheinone’s+整十基數(shù)詞復(fù)數(shù)在某人幾十歲時(shí)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時(shí)間類型表示法例讀法整點(diǎn)基數(shù)詞（+o’clock)1:00﹤30分鐘分鐘+past+小時(shí)2:10=30分鐘half+past+小時(shí)3:30﹥30分鐘（60-分鐘）+to+（小時(shí)+1）4:40分鐘逢15即一刻鐘aquarter5:156:45簡(jiǎn)化法按順序讀基數(shù)詞7:50oneo’clocktenpasttwohalfpastthreetwentytofiveaquarterpastfiveaquartertosevensevenfifty表示在幾點(diǎn)鐘用介詞at四.數(shù)詞的表示法—時(shí)間1.—It’salready7:40now.Whenwillthefilmstart?—___.Westillhavefiveminutes.A.AquartertosevenB.Sevenpastforty-fiveC.Aquartertoeight15分子基數(shù)詞分母序數(shù)詞onefifth27分子﹥1分母+stwosevenths14分子a分母quarteraquarter34threequarters12ahalf13three

andonethird3基數(shù)詞+and+分?jǐn)?shù)四.數(shù)詞的表示法—分?jǐn)?shù)百分?jǐn)?shù)80%基數(shù)詞+percenteightypercenthalf/(百)分?jǐn)?shù)+of+可數(shù)名詞復(fù)數(shù)謂語動(dòng)詞用復(fù)數(shù)half/(百)分?jǐn)?shù)+of+不可數(shù)名詞謂語動(dòng)詞用單數(shù)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一個(gè)半小時(shí)兩個(gè)半小時(shí)twoandahalfhours=twohours

andahalfoneandahalfhours=onehourandahalf四.數(shù)詞的表示法—半的表示法1.

Theboyalwaysstaystherefor__.A.oneandhalfhourB.oneandahalfhourC.oneandahalfhours2.

Theoldmandrank__beer.A.twobottlesandahalfB.twoandahalfbottleC.twobottleandahalf一倍once，兩倍twice，三倍threetimes(三倍或以上基數(shù)詞＋times)四.數(shù)詞的表示法—倍數(shù)

Thisboxisfivetimes

asbigasthatone.=Thisboxisfourtimesbigger

thanthatone.①

A+be+倍數(shù)+as+adj.原+as+B.A是B的…倍…②

C+be+倍數(shù)+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一般編碼用名詞+基數(shù)詞20