一到二十的序数词

first、second、third、fourth、fifth、sixth、seventh、eighth、ninth、tenth、eleventh、twelfth、thirteenth、fourteenth、fifteenth、sixteenth、seventeenth、eighteenth、nineteenth、twentieth。

一到二十的基数词

zeo、one、twO、three、four、five、six、seven、eight、nine、ten、eleven、twelve、thirteen、fourteen、fifteen、sixteen、seventeen、eighteen、nineteen、twenty。

one一1steight一8thjeighteen一18th

two一2ndnine一9thtwenty一20th

three一3rdten一10thforty一40th

four-4theleven一11thfifty一50th

five一5thtwelve一12thtwenty-one一21st

six一6ththirteen一13thforty－two一42nd

seven一7thfourteen一14thonehundred-100tb