初一英语基数词和序数词 全

初一英语 之 基数词与序数词 热身运动：12个月份 J_ nu_ry  F_br_ _ry  M_ _ch    _pr_l  M_ _          _une  _ _ly  _ _gust  S_pt_mb_ _  _ct_b_ _        N_v_mb_ _  D_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。 （1）基数词的构成法： ●1~12的基数是特殊的，必须牢记。请写下来：_________________________________ ________________________________________________________________________ ●13~19的基数是在3~9的基础上加上后缀-teen [‘ti: n]（音同“听” ）构成的。 其中13，15，18是特殊的。 13——thirteen  ;  15——fifteen    ;    18——eighteen ●20~90的基数整数是在2~9的基础上加后缀-ty [ti]（*音同“踢” ）构成的。 其中20，30，40，50，80是特殊的。 20——twenty  30——thirty  40——forty    50——fifty    80——eighty ●21~99的基数非整数是：整数-个数 （当中要用连字符号“-”隔开 ） 21——twenty-one  27——twenty-seven  43——forty-three  59——fifty-nine 66——sixty-six  88——eighty-eight  93——ninety-three  99——ninety-nine ●100~900的整百数是：个数（1~9）+hundred  (hundred“百”用单数) 100——one(或a) hundred  300 ——three hundred    800——eight hundred ●101~999的非整数是：个数（1~9）+hundred +and+整数-个数 (没有十位数，就直接用个位数) 101——one(或a) hundred and one      309——three hundred and nine 210——two hundred and ten          413——four hundred and thirteen 540——five hundred and forty        598——five hundred and ninety-eight 970——nine hundred and seventy    999——nine hundred and 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  (thousand“千”用单数) 4，000——four thousand      9，000——nine thousand 1，001——one thousand and one    2，008——two thousand and eight 3，015——three thousand and fifteen  4，040——four thousand and forty 5，069——five thousand and sixty-nine  6，200——six thousand (and) two hundred 7，486——seven thousand four hundred and eighty-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billion亿 第四个逗号——用trillion万亿 50，000，000—— fifty million 500，000，000—— five hundred million 5，000，000，000—— five billion 50，000，000，000——fifty billion 练习：25,025,874,953—— twenty-five billion twenty-five million eight hundred and seventy-four thousand nine hundred and fifty-three （2）复数形式的基数词 They went to the theatre in twos and threes． 他们三三两两地来到了剧院。 ★表示人的不确切岁数或年代，用几十的复数形式表示。 He became a professor in his thirties． 他三十多岁时成为了教授。 She died of lung cancer in her forties． 她四十来岁时死于肺癌。 It was in the 1960s． 那是在二十世纪六十年代。 三. 序数词：序数词是指表示顺序的数词 英语中基数词变序数词方法——口诀 口诀 解说 举例子 基变序，有规律，后面th加上去。 在数词后面加th。 four → fourth 一二三，特殊记，后面字母t,d,d。 one, two, three特殊变。 first，second，third 八去t，九去e。整数中的y要变成ie eight去掉t，nine去掉e。twenty去掉y变成twentieth eight → eighth nine → ninth f来把ve替。 five和twelve的ve要变成f 。 five→ fifth twelve→ twelfth 若是遇到几十几，只变个位就可以。 两位数或两位以上数字只变个位。 thirty-three→thirty-third 序数词前要加the 我们一定要牢记。 序数词前必须加the（上述原则中的除外） the first day       归类表格(一) 基数词(数目/数量的多少) 序数词(顺序和等级) 1 one 1-12单独记忆 first 1-12单独记忆 2 two second 3 three third 4 four fourth 5 five fifth 6 six sixth 7 seven seventh 8 eight eighth 9 nine ninth 10 ten temth 11 eleven eleventh 12 twelve twelfeth 13 thirteen 13-19尾加+teen thirteenth 13-19尾+th 14 fourteen fourteenth 15 fifteen fifteenth 16 sixteen sixteenth 17 seventeen seventeenth 18 eighteen eighteenth 19 nineteen nineteenth 20 twenty 20-90(整数)尾+ty twentieth 以ty结尾的数词,改y为i,+eth 30 thirty thritieth 40 forty forieth 50 fifty fiftieth 60 sixty sixtieth 70 seventy seventieth 80 eighty eightieth 90 ninety ninetieth 100 hundred hundredth 21 twenty-one 依此类推 twenty-first 基数-序数 36 thirty-six thirty-sixth           四、写出下列基数词的序数词 和它们的简写形式： 例如： one first / 1st   eleven eleventh / 11th 1.      (基变序，有规律，第1，2，3，特殊记，词尾字母 st  nd  rd )    one ___/__    two ____/__    three ___/__ twenty-one ________/__  twenty-two  ________/__  twenty-three ________/__  thirty- one  ________/__ 2.    (8减t, 9减 e， 词尾再加th ) eight  ___/__    nine___/_  twenty-eight ________/__      twenty-nine ________/__    3.（第5和第12要注意，f来把ve替，词尾再加th） five ___/__  twelve_____/_  twenty-five ________/__ 4. (整十基数要变序，要把ty变ie,词尾再加th twenty _____/__  thirty ______/_  forty_____/_  fifty_____/__    sixty  ______/__  seventy______/_ eighty______/__  ninety______/__ 五，根据句子意思填空。 1. Children’s Day（儿童节） is on the    ____     of June（六月）. 2. There are      ____     months（月）in a year(年). 3. Teacher’s Day(教师节) is on the   ____        of September（九月）. 4. Three plus(加) six is   ______      . 六，选择填空。 (   )1. My cousin’s birthday in on the         of October.    A. three    B. first     C. the second (   )2. What date is it today? It’s        of April.     A.  twelfth    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 根据 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 意，填入合适的数词。 1、Sunday is the (        ) day of a week. 2、September is the (      ) moth of a year. 3、October the (      ) is National of a year. 4. There are _______________ days in February. 二、单项选择 1. - How old is your son? - _____. We had a special party for his _____ birthday last Sunday. A. Nine; nine    B. Nine; ninth C. Ninth; ninth D. Ninth; nine 2. Mrs. Turner have _____ child today. A. second    B. the two C. a second D. the second 3. June is the _____ month of the year. A. five    B. six C. seventh D. sixth 4. The _____ month of a year is December. A. two    B. second    C. twelve D. twelfth 5. - What's the date today? - It's _____ . A. May the fourth    B. May four C. the May fourth D. fourth May  6. September is the ________ month（月份） of the year. A. eighth B. ninth C. tenth D. eleventh 7、 There are ________ days in February. A. thirty B. thirty-one C. twenty-eight D. twenty-six 8. How many months are there in a year? There are _______ A. eleven B. twelve C. twenty D. twelfth 9. The Changjiang River is ________ longest river in China. A. the first B. the second C. the third D. the fourth 10. There are      months in a year，  ______  month is February． A．twelve；two            B．twelve；second C. twelve；the second      D. twelfth；the second 11. ---When is your birthday，Jeff? ---My birthday．is______  ． A. January the thirtieth      B. January thirty C. Thirty of January          D．Thirtieth of January 12.---What time is it now? ---It is      A. eleven and thirty    B．eleven thirty C. thirty eleven        D．eleven—thirty 13.There are eight classes in our grade．I'm in  ______ . A. Grade Three，Class Two      B. Class Two，Grade Three C. grade three，class two      D．class two，grade three 14.In our class        of the students ______  girls． A. three-fifth；are      B. three—fifth；is C. three-fifths；are    D．three-fifths；is (  )15. May is ____ of a year.              A. the fifth months  B. the fifth month    C. the five months    D. the five month (  )16. ---How many English books are there on the table? ---There is only _____English book on it. A. a    B. an    C. one    D. the (  )17. Is Sunday the ____ day of the week? A. a    B. one    C. once    D. first (  )18. March the _____ is Women’s Day. A. eighth    B. ninth    C. tenth    D. eight (  )19. September is the _____month of the year. A. nineth    B. ninth    C. nine    D. the twelveth (  )20. December the ____ is Christmas.    A. twenty-five                B. twenty-fifth C. twentieth-five              D. twenty-five (  )16.-What time is it now? –It’s __________. A.No.6    B.six ten o’clock C.half past six