数词（Numerals）WPS,aclicktounlimitedpossibilities
目录基数词分数序数词小数次数数词考点
PART-01基数词
构成：1.基数词1-12是独立的单词，需逐个记忆数字与英文单词对应表1one2two3three4four5five6six7seven8eight9nine10ten11eleven12twelve基数词13-19以-teen结尾13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteen基数词20-90的整十位数以-ty结尾20twenty30thirty40forty50fifty60sixty70seventy80eighty90ninety
基数词21-99的非整十位数是在十位数与个位数之间加连字符“-”64sixty-four89eighty-nine基数词101-999在百位数与十位数之间，或者（没有十位数时）在百位数与个位数之间加“and”422fourhundredandtwenty-two302threehundredandtwo
大数的表达6.1000以上的基数词从右向左用分节号“，”分节，每③个数字为一节，第一个分节号前用thousand，第二个分节号前用million，第③个分节号前用billion（美国）或onethousandmillion（英）。1,003onethousandandthree7,657,000sevenmillion,sixhundredandfifty-seventhousand1,214,000,000onebillion,twohundredandfourteenmilliononethousand,twohundredandfourteenmillion
常考：当百、千、百万、十亿（hundred，thousand，million，billion）等基数词表示确切数目时不能加-s；但在表示不确切数目时可用复数形式，与of连用表示“数以……计的”。一万tenthousand十万ahundredthousand成百上千hundredsof成千上万thousandsof
练一练：5012325345576238946724631FivethousandandtwelveThirty-twothousand,fivehundredandthirty-fourFivehundredandfifty-seventhousand,sixhundredandtwenty-threeSeventeenmillion,fivehundredandninety-fourthousand,twohundredandforty-sixEightbillion,ninehundredandforty-sixmillion,sevenhundredandtwenty-fourthousand,sixhundredandthirty-one
About________filmswereshownduringthe5thShanghaiInternationalFilmFestival.A.twohundredofB.twohundredsofC.twohundredD.twohundreds答案：C
PART-02序数词
用法：1.序数词1-3需逐个记忆，4-19的序数词都是“基数词+th”第一first第二second第③third第八eighth第九ninth第十二tw