初一英语基数词和序数词全 7页

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