基数词&序数词知识点回顾

基数词&序数词知识点回顾1A.基数词的用法1.我们通常用基数词来谈论数量的多少20以下的基数词0zero8eight16sixteen1one9nine17seventeen2two10ten18eighteen3three11eleven19nineteen4four12twelve5five13thirteen6six14fourteen7seven15fifteen20以上的基数词20twenty30thirty40forty50fifty60sixty70seventy80eighty90ninety100hundred百位数（hundred）234twohundredandthirty-four*百位和十位之间要用and千位数（thousand）2,345twothousandthreehundredandforty-five1000以上的较大数字（million）23,456twenty-threethousandfourhundredandfifty-six*注：hundred,thousand,million,billion等词的用法，若前面有具体的基数词，必须用单数；若表示泛指数百，数千，数百万等，则用hundredsof,thousandsof,millionsof.E.g.Therearetwohundredstudentsintheschool.ThousandsofEnglishwordscomefromforeigntongues.2.基数词的复数用法*逢整十的基数词复数形式可用于某人的大约岁数以及世纪中的年代Thewarbrokeoutinthenineties.KarlMarkbegantolearntheRussialanguageinhisfiftieth.基数词&序数词知识点回顾2B.序数词的用法我们通常用序数词来谈论日期、楼层、位置等ThesummerholidaystartsfromthefirstofJuly.Iliveontheeleventhfloor.Sandyalwayscomesfirstinherclass.FirsttenthnineteenthSecondeleventhtwentiethThirdtwelfththirtiethFourththirteenthfortiethFifthfourteenthfiftiethSixthfifteenthsixtiethSeventhsixteenthseventiethEighthseventeentheightiethNintheighteenthninetieth总结：以ve结尾的基数词，ve要变为f,再加thE.g.five---fifthtwelve--twelfth以ty结尾的基数词，y变为ie，再加thE.g.twenty---twentieth序数词的缩写形式：first---1stsecond---2ndthird---3rdfourth---4th