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《中考复习专题 基数词、序数词.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、基数词、序数词数词数词就是表示事物的数量和顺序的词。基数词序数词数量顺序一、基数词、序数词基数词序数词序数词的缩写形式onetwothreefirstsecondthirdtwelfth1～31,2,3特殊记1st2nd3rd数字+序数词最后两个字母4～19/θ/fourtwelvefivethirteensixfourteensevenfifteeneightsixteennineseventeenteneighteenelevennineteenvefourfisixthseventheighnintenthelevenththfthththte4th
2、11th6th5th7th8th9th10thfthirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwelveth12th13th14th15th16th17th18th19th基数词基数词序数词序数词缩写缩写8减t,9去e,ve要由f替，然后再加“th”twelfth20～90基数词序数词缩写基数词序数词缩写twentysixtythirtyseventyfortyeightyfiftyninetytwentyieththirtiethfortiethfiftieth
3、sixtiethseventietheightiethninetiethy要变ie,最后别忘-th.20th30th40th50th60th70th80th90th21～99基数词序数词缩写twenty-onethirty-twoforty-threefifty-foursixty-fiveseventy-sixeighty-sevenninety-eightninety-ninetwenty-firstthirty-secondforty-thirdfifty-fourthsixty-fifthseventy-sixtheighty-seventhnin
4、ety-eighthninety-ninth21st32nd43rd54th65th76th87th98th99th“几十几”要注意，个位序数就可以！二、基数词的读法101—999，三位数，百位与十位/个位之间加and。百位数读法101onehundredandone840eighthundredandforty693sixhundredandninety-three千位数及以上数字的读法1,000以上的数字,从右向左每三位用“，”分开,分别读为thousand（千）,million（百万）,billion（十亿）3214,thousandfourthou
5、sand,threehundredandtwenty-one321654,7,thousandmillionsevenmillion,sixhundredandfifty-fourthousand,threehundredandtwenty-one千位数及以上数字的读法321654,987,thousandmilliononebillion,ninehundredandeighty-sevenmillion,sixhundredandfifty-fourthousand,1,billionthreehundredandtwenty-one18,113,02
6、4,790试一试：eighteenbillion,onehundredandthirteenmillion,twenty-fourthousand,sevenhundredandninety.基数词的用法、序数词一、表示数量1.十二层楼2.一千二百五十个学生twelvefloors1,250studentshundredsthousandsmillionsbillions数词+3.两百万美元twomilliondollarshundredthousandmillionbillion4.成百上千棵树hundredsoftrees+of(several)（表示
7、概数）（表示具体数量）(some)/(many)基数词的用法二、表示年龄1.十六岁2.在他五十多岁时3.一个八岁的女孩sixteenyearsoldinhisfiftiesaneight-year-oldgirlinone’s+整十基数词的复数形式inone’s+整十的复数形式teens十多岁twenties二十多岁forties四十多岁sixties六十多岁nineties九十多岁基数词+名词基数词+名词+形容词复容合词形atwo-monthholidaya100-metre-longbridge三、表示编号1.第一课2.五路公交车四、表示年份、年代1.
8、in1998inninteenninety-eight2.in20
