小升初英语数词专项讲解及练习

1数词一、数词的种类数词分基数词和序数词基数词是表示自然数列的词,例如;one、two、three、four…..序数词是表示先后顺序的词,例如:first、second、third、fourth…二基数词和序数词的表示法1．基数词单词的拼写：1~12为单词onetwothreefourfivesixseveneightnineteneleventwelve13~19都以后缀-teen结尾，20至90这样的整十数都以后缀-ty结尾，其他基数词中间加连字符号“-”再按照上述的变化进行。例：21→twenty-one56→fifty-six85→eighty-five三位数的构成为：几+百+and+末两位（或末一位）数例：132→onehundredandthirty-two205→twohundredandfive千以上的数字的读法：从后面往前，每三位数作为一个单位，分别为thousand、million.32、548、652、读作：1.thirtytwomillion22.fivehundredandfortyeightthousand3.sixhundredandfiftytwo2.序数词=基数词+th(1、2、3为first、second、third)。数词分基数词和序数词但以下几种情况要注意：1)fifth(第五)、eighth(第八)、ninth(第九)、twelfth(第十二）2)以ty结尾的基数词变词尾为tieth例：twenty→twentiethninety→ninetieth序数词表示十位与个位数时，十位与个位之间用“—”3)复合序数词只需要将相应基数词中最后一位变成序数词，其余不变。例：第二十一→twenty-first第二百四十五→twohundredandforty-fifth3三基数词序数词的用法1.hundred、thousand、million与数字连用，表示一定量的具体数字，不用复数，但表示不定概念可用复数例：threehundredpeoplemillionsofpeople2.基数词表示时刻。例：7点seveno’clock7:20seventwenty3.给某些事物编号例：LessonOne=thefirstlesson7月1日=JulyI(JulyIst)1996年6月3日=June3,1996=Junethethird,nineteenninety-six4.in+one’s+整数数词的复数形式表示年龄例：Theoldwomanisinhernineties.Heishisearlyforties.5.有关倍数表示法两倍用twice,三倍以上用数词+times,要注意倍数在句子的位置。4例：例：Thedooristhreetimesthesizeofthis.Heisdoublemyage.5数词－Practice练习吧1.写出下列数词对应的英语形式。2.单项选择（）1.Thereare____daysinaweek.A.thesevenB.seventhC.theseventhD.seven（）2.Ithinkthatthe_____century(世纪)willbringusmorehopes.A.twenty-oneB.twentieth-firstC.twenty-firstD.twentieth-one（）3.--Howmanystudentsarethereinyourschool?--___thestudentsinourschool_____overtwothousand.A.Thenumberof;isB.Thenumberof;areC.Anumberof;isD.Anumberof;are（）4.Thenewstudentisin_____.A.Class2B.ClassSecondC.2ClassD.class26（）5.--Howmanyteachersarethereinyourschool?--_____,butI’mnotsure.A.HundredsB.HundredC.HundredsofD.Onehundred（）6._____oftheteachersinourschoolisaboutonehundred,andofthemare___womenteachers.A.Thenumber,two-thirdsB.Thenumber,two-thidC.Anumber,halfD.Anumber,three-quarters（）7.--Dad,whenwillyoubefree?--Iamsorry,Jean.ButIthinkIwillhavea___holidaysoon.A.four-daysB.four-dayC.fourdaysD.fourday（）8.FanZhiyi’stransfertoDundeeFootballClubattheendoflastyeararoused(激起)____Chinesepeople’sinterest.A.thousandofB.thousandC.thousandsofD.thousands（）9.Thisstoryhappenedon____.A.1989,Oct21stB.Oct.21st,1989C.21Oct,ber,1989D.21stofOctber,1989（）10.Sevenfivecanbewritten____.A.fivesevensB.fivetosevenC.sevenfivesD.fivepastseven（）11.TheEnglishfor10,440is____.A.tenthousand,fourhundredsandfortyB.tenthousand,fourhundredandfortyC.tenthousands,fourhundredandfortyD.tenthousandandfourhundred,forty7（）12.____oftheworkersinthefactoryisabouttwohundred,____ofthemare_____womenworkers.A.Thenumber,first-thirdB.Thenumber,one-thirdC.Anumber,halfD.Anumber,threequarters（）13.---Canyouwritethenumbereighty-fivethousand,sixhundredandtwenty-six?---Yes,itis____.A.85662B.85626C.85006D.85620（）14.About____ofthebooksinourschoollibraryarewritteninChinese.A.Fourth-fifthsB.four–fifthC.four–fifthsD.fourths-fifth（）15.Theroadisover____meterslong.A.sixhundredandfifty-twoB.sixhundredsandfiftytwoC.sixhundred,fifty–twoD.sixhundred,fiftyandtwo（）16.January____isNewYear’sDay.A.oneB.twoC.thefirstD.thesecond（）17.Takethe____turningonyournight.A.nineB.ninthC.nineteenD.nineth