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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，有规律口诀：基变序，有规律。 一、二、三、特殊记，词尾字母一、二、三、特殊记，词尾字母 t,d,d.t,d,d. ( (如：如：first,first, second,second, third)third)。 八减八减 t,t,九去九去 e,e,（如：（如：eighth,eighth, ninthninth）, , f f 来把来把 veve 替。（如：替。（如：twelfthtwelfth）. . 单词单词 tyty 作结尾，作结尾，tyty 变成变成 tie(tie(如：如：twentieth).twentie
2、th). 若是碰到几十几，只变个位就可以。（如：若是碰到几十几，只变个位就可以。（如：twenty-firsttwenty-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；10th-tenth；11th- eleventh； 12th-twelfth；20th-twentieth；21st-twenty-first；22nd-twenty- second；29th-twenty-ninth；30th-thirtie
3、th；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.twelve 7.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.nineteenth 6.thirty-first _ 根据句子意
4、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 on the of October. A. three B. first C. the second ( )2. What date is it today? Its of April. A. twelfth
5、 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
