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1、英语中的数词一.概述数词是表示数目多少和顺序先后的词,分为基数词和序数词两种.基数词表示数目,序数词表示顺序.二.基数词1.基数词的构成1)1~12是独立的单词1one2two3three4four5five6six7seven8eight9nine10ten11eleven12twelve2)13~19是在基数词后加-teen13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteen注意:13和15的拼写发生变化,18
2、应省去原来的字母t,应熟记3)20~90的整位数是在基数词后加-ty20twenty30thirty40forty50fifty60sixty70seventy80eighty90ninety注意:20,30,40,50,80的拼写发生变化4)21~29由”十位数20+个位数1~9”构成,中间加连字符21twenty-one22twenty-two23twenty-three24twenty-four25twenty-five26twenty-six27twenty-seven28twenty-ei
3、ght29twenty-nine其他”几十几”的数词依此类推.31thirty-one42forty-two53fifty-three64sixty-four75seventy-five86eighty-six97ninety-seven99ninety-nine5)百位数由1~9加hundred构成100one/ahundred200twohundred500fivehundred900ninehundred百位数含十位数和个位数时,百位数和十位数之间常用and连接;百位数加个位数时,也可用and
4、连接,但在美式英语中,这个and往往省略.158a/onehundred(and)fifty-eight599fivehundred(and)ninety-nine605sixhundred(and)five808eighthundred(and)eight6)千位数由1~9加thousand构成1,000a/onethousand2,000twothousand5,000fivethousand9,000ninethousand千位数带百、十、个位数时,由千位数直接加百、十、个位数构成.a只能用在
5、整个词组之首.one比a正式,因而在正式文体中应该用one.另外,千位数中如果百位数和十位数均为零,可用and与个位数连接,但在美式英语中,and往往省去.1,005one/athousand(and)five3,008threethousand(and)eight4,836fourthousandeighthundred(and)thirty-six6,927sixthousandninehundred(and)twenty-seven7)万位数的构成英语中的”万”要用”数词+thousand“表
6、示.10,000tenthousand20,000twentythousand50,000fiftythousand60,856sixtythousandeighthundred(and)fifty-six89,733eighty-ninethousandsevenhundred(and)thirty-three“10万~99万”的表示法100,000a/onehundredthousand200,000twohundredthousand335,452threehundred(and)thirty
7、-fivethousandfourhundred(and)fifty-two650,700sixhundred(and)fiftythousandsevenhundred998,616ninehundred(and)ninety-eightthousandsixhundred(and)sixteen8)”百万”的表示法“百万”以million为单位.1,000,000a/onemillion2,000,000twomillion3,600,000threemillionsixhundredthous
8、and8,964,688eightmillionninehundred(and)sixty-fourthousandsixhundred(and)eighty-eight9)”千万”的表示法10,000,000tenmillion20,000,000twentymillion96,000,000ninety-sixmillion10)”亿”的表示法100,000,000a/onehundredmillion600,000,000sixhundredmillion11)
