基数词与序数词专项练习

基数词与序数词专项练习一、知识归纳①基数词变序数词的规律：口诀：基变序，有规律。一、二、三、特殊记，词尾字母t,d,d.(如：first,second,third)。八减t,九去e,（如：eighth,ninth）,f来把ve替。（如：twelfth）.单词ty作结尾，ty变成tie(如：twentieth).若是碰到几十几，只变个位就可以。（如：twenty-first）②1-100的序数词：1st--first；2nd--second；3rd--third；4th--fourth；5th--fifth；6th--sixth；7th--seventh；8th--eighth；9th--ninth；10th--tenth；11th--eleventh；12th--twelfth；20th--twentieth；21st--twenty-first；22nd--twenty-second；29th--twenty-ninth；30th--thirtieth；31st--thirty-first；40th--fortieth；50th--fiftieth；60th--sixtieth；70th--seventieth；80th--eightieth；90th--ninetieth；100th--hundredth二、巩固练习：①写出下列词的序数词形式。1.one2.two3.six4.five5.nine6.twelve7.eight8.twenty-one②写出下列单词的基数词形式。1.third2.fourth3.tenth4.twentieth5.nineteenth6.thirty-first_③根据句子意思填空。1.Children’sDay（儿童节）isontheofJune（六月）.2.Therearemonths（月）inayear(年).3.Teacher’sDay(教师节)isontheofSeptember（九月）.4.Threeplus(加)sixis.④选择填空。()1.Mycousin’sbirthdayinontheofOctober.A.threeB.firstC.thesecond()2.Whatdateisittoday?It’sofApril.A.twelfthB.the12thC.12th()3.Therearedaysinaweek.A.thesevenB.seventhC.theseventhD.seven()4.Sundayisthedayofaweek.A.oneB.firstC.second()5.Twenty-eightminus(减)sixis.A.thetwenty-secondB.twenty-twoC.twenty-second()6.Fourplus(加)istwelve.A.sevenB.eightC.nine