初一英语基数词和序数词-全

初一英语之基数词与序数词12热身运动个月份J nury Fbr ryM chpr IM_une______ly______gust S_pt_mb______ct_b_______mb___b_c_mb______

一、分类英语中数词主要分为基数词和序数词两类

二、基数词表示数目的词称为基数词基数词的构成法:1・的基数是特殊的，必须牢记请写下来:1~12540------ve hundred and forty598-------ve hundredand ninety-eight970-----nine hundredand seventy999-----------nine hundredand ninety-nine•1000以上的基数词在上面的基础上，再在前面加上个数（1〜9）+thousand（千用单数）thousand“4,000-----four thousand9,000------------------nine thousand1,001-----one thousandand one2,008-----------two thousandand eight3,015-----three thousandand fifteen4,040----------four thousandand forty（）5,069-----5ve thousandand sixty-nine6,200--------six thousandand two hundred7,486------seven thousandfour hundredand eiqhty-six★在英语里，数字（阿拉伯数字）通常从个位数起往左，每三个数用一个逗号隔开,而汉语习惯每四个数用逗号隔开（注意区别）从左向右第一个逗号-------用thousand千第二个逗号-----用million千万第三个逗号——用亿billion第四个逗号——用万亿trillion50,000,000--------fifty million500,000,000-------five hundredmillion5,000,000,000——five billion50,000,000,000——fifty billion练习:25,025,874,953------twenty-five billiontwenty-4ve millioneiqht hundredavd皆seventy-four thousandnine hundredand fty-three（）复数形式的基数词2他们三三两两地来到了居！|院They wentto the theatre intwos andthrees.★表示人的不确切岁数或年代，用几十的复数形式表示他三十多岁时成为了教授He becamea professorin histhirties.她四十来岁时死于肺癌She diedof lungcancer inher forties,那是在二十世纪六十年代It wasin the1960s.英语中基数词变序数词方法口诀三.序数词序数词是指表示顺序的数词口诀解说举例子基变序，有规律，后面在数词后面加一th four fourtho加上去th一二三，特殊记，后特殊变one,two,three first,second,third面字母t,d,do八去九去整数t,eo eight去掉t,nine去掉e twentyeight一eighth nine一oninth中的要变成y ie去掉变成y twentieth一一five fifthtwelve来把替和的要变成f vefive twelveve ftwelfth两位数或两位以上数字只变个若是遇到几十几，只变thirty-three—thirty-third位个位就可以序数词前要加序数词前必须加（上述原thethe我们一定要牢记则中的除外）the firstday归类表格

（一）基数词（数目/数量的多少）序数词（顺序和等级）1one first2two second3three third4fourfourth5five fifth6six sixth7seven seventh1-12单独记1-12单独记8eight eighth忆ninth忆9nine10ten temtheleven eleventh11twelfeth12twelve13thirteen thirteenth14fourteen fourteenth15fifteen fifteenth13-19尾加16sixteen sixteenth13-19尾+th17seventeen+teen seventeenth18eighteen eighteenth19nineteen nineteenth20twenty twentieth30thirty thritieth以ty结尾的40forty forieth20-90（整50fifty fiftieth数词，改y为60sixty sixtieth数）尾+tyi,+eth70seventy seventieth80eighty eightieth90ninety ninetieth100hundred hundredth21twenty-one twenty-first依此类推基数-序数36thirty-six thirty-sixth

四、写出下列基数词的序数词和它们的简写形式one first/eleveneleventh/ll例如尸（基变序，有规律，第特殊记，词尾字母）

1.1,2,3,st ndrd twenty-one/twenty-two.twenty-three/thirty-oneone twothree（减减词尾再加）

2.8t,9e,theight/nine/twenty-eight/twenty-nine（第和第要注意，来把替，词尾再加）

3.512f vethfive/twelve/twenty-five（整十基数要变序，要把变词尾再加

4.ty ie,thtwenty/__________thirty/_forty/fifty/sixty/seventyeighty/ninety/五，根据句子意思填空（儿童节）（六月）,

1.Childrens Dayis on the ofJune（月）（年）.

2.There aremonths ina year（教师节）（九月）.

3.Teachers Dayis on the ofSeptember（力口）

4.Three plussix is.六，选择填空（）

1.My cousinsbirthday inontheof October.A.three B.first C.the second（）

2.What dateis ittoday Ifs_of April.A.twelfth B.the12th C.12th（）

3.There are.days ina week.A.the seven B.seventh C.the seventh D.seven（）

4.Sunday isthe day of a week.A.one B.first C.second（）（减）

5.Twenty-eight minussix is_.A.the twenty-second B.twenty-two C.twenty-second加

6.Four plus_is twelve.A.sevenB.eight C.nine、1Sunday isthedayof aweek.、2September isthemoth of a year.、3October theis Nationalof a year.根据题意，填入合适的数词

4.There aredays inFebruary.

二、单项选择

1.-How oldis yourson・■We hada specialparty forhis birthdaylastSunday.A.Nine;nine B.Nine;ninthC.Ninth;ninth D.Ninth;nine

2.Mrs.Turner havechild today.A.second B.the twoC.a secondD.the second

3.June isthe monthof theyear.A.five B.sixC.seventhD.sixth

4.The monthofa year isDecember.A.two B.second C.twelve D.twelfth

5.-Whafs thedate todayA.May the fourth B.May fourC.the Mayfourth D.fourth May月份

6.September isthe monthof theyear.A.eighth B.ninth C.tenth D.eleventh

7.There aredays inFebruary.A.thirty B.thirty-one C.twenty-eight D.twenty-six

8.How manymonths are there inayearThere areA.eleven B.twelve C.twenty D.twelfth

9.The ChangjiangRiver islongest riverin China.A.the firstB.the secondC.the thirdD.thefourth

10.There aremonths inayear,month isFebruary.；A.twelve;two B.twelve secondC.twelve;the second

11.D.twelfth;the second—When isyour birthday,-My Jeffbirthday,is A.January thethirtiethC.Thirty ofJanuary B.January thirty

12.—What timeis itnow D.Thirtieth ofJanuary-It isA.eleven andthirty B.eleven thirtyC.thirty elevenD.eleven—thirty

13.There areeight classesin ourgrade.Im in.A.Grade Three,Class TwoB.Class Two,Grade ThreeC.grade three,class twoD.class two,grade three

14.ln ourclass of thestudents girls.A.three-fifth;are B.three—fifth;isC.three-fifths;are D.three-fifths;is

15.May isofayear.A.the fifthmonths B.the fifthmonthC.the fivemonths D.the fivemonth

16.—How manyEnglish booksarethereonthetable-There isonly Englishbook onit.A.a B.an C.one D.the

17.Is Sundaythe dayof theweekA.a B.one C.once D.first

18.March theis WomensDay.A.eighth B.ninth C.tenth D.eight

19.September isthe monthoftheyear.A.nineth B.ninth C.nine D.the twelveth

20.December theisChristmas.A.twenty-five B.twenty-fifthC.twentieth-five D.twenty-five

16.-What timeis itnow-Its.A.No.6B.six tenoclock C.half pastsix•13〜19的基数是在3〜9的基础上加上后缀31［，ti:n］（音同“听”）构成的其中是特殊的13,15,1813-----thirteen;15-----fifteen;18-----eighteen•20〜90的基数整数是在2〜9的基础上加后缀心［切（**音同“踢”）构成的其中是特殊的20,30,40,50,8020-----twenty30----------thirty40----------forty50-------------fty80--------------eighty•21〜99的基数非整数是整数一个数（当中要用连字符号隔开）21-----twenty-one27---------twenty-seven43-------forty-three59-----------flfty-nine66-----sixty-six88---------eiqhty-eiwht93-------ninety-three99-----------ninety-nine・100〜900的整百数是个数（1〜9）+hundred（hundred“百”用单数）（或）100-----one ahundred300----three hundred800-----------eighthundred・101〜999的非整数是个数（1〜9）+himdred+and+整数.个数（没有十位数，就直接用个位数）（或）101-----one ahundredandone309------three hundredandnine210-----twohundredand ten413-----four hundredandthirteen。