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1、基数词和序数词专项练习题一、知识归纳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）1-100的序数词：1st-first；2nd-second；3rd-third；4th-fourth；5th-fifth；6th-sixth；7th-seventh；8th-eighth；9th-ninth；1
2、0th-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：写出下列词的序数词形式。1. one 2.two 3. six 4.five 5. nine 6.t
3、welve7.eight 8.twenty-one 写出下列单词的基数词形式。1.third 2.fourth 3.tenth 4.twentieth 5.nineteenth6.thirty-first _根据句子意思填空。1. Childrens Day（儿童节） is on the of June（六月）.2. There are months（月）in a year(年).3. Teachers Day(教师节) is on the of September（九月）.4. Three plus(加) six is .选择填空。( )1. My cousins birthday in o
4、n the of October. A. three B. first C. the second( )2. What date is it today? Its of April. A. twelfth B. the 12th C. 12th( )3. There are days in a week. A. the seven B. seventh C. the seventh D. seven( )4.Sunday is the day of a week. A. one B. first C. second( )5. Twenty-eight minus(减)six is . A. the twenty- second B. twenty-two C. twenty- second( )6. Four plus(加) is twelve. A. seven B. eight C. nine
