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1、TheuseofNumerals(数词)知识点梳理一、数词有两种：基数词和序数词，基数词表数量；序数词表顺序，前面要加the。基变序，有规律。一、二、三要特殊记。八减t,九减e,遇到ve用f替，ty变成tie,然后再加th。如果要变几十几，只变个位就可以。基数词变序数词口诀问题习题化Ⅰ.WritedownthefollowingCardinalNumbers(基数词),OrdinalNumbers(序数词)andtheShortForms(缩写形式).1.________________2.________________3.________________4._______
2、_________5.________________8.________________9.________________12.________________14._______________40._______________32._______________91._______________Ⅰ.WritedownthefollowingCardinalNumbers(基数词),OrdinalNumbers(序数词)andtheShortForms(缩写形式).1.onefirst1st2.twosecond2nd3.threethird3rd4.fourfou
3、rth4th5.fivefifth5th8.eighteighth8th9.nineninth9th12.twelvetwelfth12th14.fourteenfourteenth14th40.fortyfortieth40th32.thirty—twothirty-second32nd91.ninety—oneninety—first91st二、基数词的写法和读法表示基数单位的数词有：hundred(百),thousand（千）,million（百万）,billion（十亿）。1.个位和十位之间要加连字符：22“twenty-two”2.百位和十位之间要加“and”：65
4、9“sixhundredandfifty-nine”3.从右往左，每隔三位是一个单位数词，每个单位数词之前加一个逗号。如3，277，852，310读作：threebilliontwohundredandseventy-sevenmillioneighthundredandfifty-twothousandthreehundredandten知识点梳理问题习题化Ⅱ.Readthefollowingnumbersinpairs.923581,892456,378852,456,951知识点梳理三.基数词的另一种用法:当hundred(百),thousand（千）,million（
5、百万）,billion（十亿）和具体数字连用时，不变复数，不加of；没有具体数字时，必须变复数，加of。例如：hundredsof(好几百的，成百上千的),thousandsof（好几千的，成千上万的）,millionsof（好几百万的，许许多多的）,billionsof（好几十亿的）fivehundred,threethousand,eightmillion.中考链接Choosethebestanswers.()1.-----Howoldisyourdaughter?------_____.Wehadaspecialpartyforher______birthdaylast
6、week.A.Ninth;ninthB.Nine;nineC.Nine;ninth()2.-----Excuseme,howmanystudentsarethereinyourartclub?-------Thereare______.A.twelveB.twelfthC.thetwelth()3.-------Howlongisthenewbridge?Doyouknow?-------Yes,it’sabout_______.A.onethousandonehunderdandeightymetersB.onethousandandonehundredfiftymeter
7、sC.twothousandonehundredfortymeters()4.I’m______yearsold.Ihadaspecialpartyonmy______birthdaylastSunday.A.twelve;twelvethB.twelve;twelfthC.twelfth;twelfth()5.Todayismymother’s_____birthday.Iwillbuyheragift.A.fortyB.fourtiethC.fortieth()6.Autumnis_______se
