67序数词

Discoverit2Datesone1stfirst序数词的含义表示次序的数词叫序数词，是由基数词变化而来的。two2ndsecond3rdthirdthreefour4thfourth序数词的变化1one-----first2two------second3three----third4其余的序数词都是由基数词后加-th变化而来的吗？five5thfifthtwelve12thtwelftheight8theighthnine9thninth20thtwentiethtwenty整十的序数词把y变成i加-ethtwenty----twentiethCanyouread?1thirty----thirtieth2forty----fortieth3fifty-----fiftiethA:Whenisyourbirthday?B:Mybirthdayisin.Whichday?（哪一天？）It’sinJune2nd.JunethesecondWhenisTeacher’sDay?It’sSeptember10th.WhenisNationalDay?It’sOctober1st.WhenisIndependenceDay?美国独立日It’s______.July4th基数词变序数词歌基变序，有规律：词尾加上th（fourth，sixth）一、二、三，特殊记；结尾字母t，d，d（first，second，third）;八减t，九去e（eighth，ninth）;ve要用f替（fifth，twelfth）;ty将y变i；th前面有个e。若是碰到几十几，前用基来后用序。