基数词与序数词对照表1one一;1stfirst第一2two二;2ndsecond第二3three十;3rdthird第三4four四;4thfourth第四5five五;5thfifth第五6six六;6thsixth第六7seven七;7thseventh第七8eight八;8theighth第八9nine九;9thninth第九10ten十;10thtenth第十11eleven十一;11theleventh第十一12twelve十二;12thtwelfth第十二(twelve变ve为f加th)13therteen十三;13ththirteenth第十三14fourteen十四;14thfourteenth第十四15fifteen十五;15thfifteenth第十五16sixteen十六;16thsixteenth第十六17seventeen十七;17thseventeen第十七18eighteen十八;18theighteenth第十八19nineteen十九;19thnineteenth第十九20twenty二十;20thtwentieth第二十(twenty变y为ie加th)21twenty-one二十一;21sttwenty-first第二十一23twenty-three二十三;23rdtwenty-third第二十三25twenty-five二十五;25thtwenty-fifth第二十五27twenty-seven二十七;27thtwenty-seventh第二十七29twenty-nine二十九;29thtwenty-ninth第二十九30thirty三十;30ththirtieth第三十32thirty-two三十二;32ndthirty-second第三十二34thirty-four三十四;34ththirty-fourth第三十四36thirty-six三十六;36ththirty-sixth第三十六38thirty-eight三十八;38ththirty-eighth第三十八40forty四十;40thfortieth第四十50fifty五十;50thfiftieth第五十60sixty六十;60thsixtieth第六十70seventy七十;70thseventieth第七十80eighty八十;80theightieth第八十90ninety九十;90thninetieth第九十100onehundred一百;100th(one)hundredth第一百101onehundredandone一百零一;321threehundredandtwenty-one三百二十一;999ninehundredandninety-nine九百九十九;1,000onethousand一千;1,001onethousandandone一千零一;4,321fourthousandhundredandtwenty-one四千三百二十一;10,000tenthousand一万;54,321fifty-fourthousandthreehundredandtwenty-one五万四千三百二十一;100,000onehundredthousand十万654,321sixhundredandfifty-fourthousandthreehundredandtwenty-one六十五万四千三百二十一1,000,000onemillion一百万7,654,321sevenmillionsixhundredandfifty-fourthousandthreehundredandtwenty-one七百六十五万四千三百二十一10,000,000tenmillion一千万87,654,321eighty-sevenmillionsixhundredandfifty-fourthousandthreehundredandtwenty-one八千七百六十五万四千三百二十一100,000,000onehundredmillon一亿987,654,321ninehundredandeighty-sevenmillionsixhundredandfifty-fourthousandthreehundredandtwenty-one九亿八千七百六十五万四千三百二十一1,000,000,000onebillion十亿