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初三数词

中考对数词的考查主要集中在以下几个方面:1、基数词与序数词的拼写、表达;2、分数、小数、百分数、编号、时间、加减乘除运算等的表达;3、数词加名词作主语时的主谓一致。

考查的主要形式是单项选择、语法选择。

二、基本概念表示数目多少或顺序先后的词叫做数词。

数词大概可以分为2类,一类表数目,称为基数词;一类表顺序―第几‖,称为序数词。

三、基础知识回顾基数词(1)基数词1-12是独立单词,需逐个记忆。

1 one2 two3 three4 four5 five6 six7 seven8 eight9 nine 10 ten 11 eleven 12 twelve(2)13-19是由个位数加后缀―teen‖构成,注意其中13,15的拼写是thirteen和fifteen. (3)20-90的整十数字是由个位数加后缀―ty‖构成,注意其中20-50的拼写分别是twenty, thirty, forty 和fifty;80的拼写是eighty;(4)其他非整十的两位数21-99是由整十位数加连字符―-‖,再加个位数构成,如:81 eighty-one;(5)基数词三位以上的数词,在百位和十位数之间要用连词and。

如:691 six hundred and ninety-one 5,893 five thousand eight hundred在基数词中只有表示―百‖―百万‖―千‖―千万‖的单位词,没有单独表示―万‖、―亿‖的单位词,而是用thousand(千)、million(百万)和billion(十亿)来表达:如:100,100,100,100thousandmillionbillion观察以下句子中关于数词的表达:1)There are thousands of ants around the sugar.2)There are about six billion people in the world.表达概数用:hundreds/thousands/millions/billions of + n. ,译为:成百的/成千的/成万的…,表达精确的数用:one/two/three...+hundred/thousand/million/billion + n.– What's the number of the students in your school?– I'm not sure. I think there are _______ students.(2010天河一模第24题)A. five hundredB. five hundredsC. five hundreds ofD. five hundred of序数词基数词(数目/数量的多少) 序数词(顺序和等级)1 one1-12单独记忆first1-12单独记忆2 two second3 three third4 four fourth5 five fifth6 six sixth7 seven seventh8 eight eighth9 nine ninth10 ten tenth11 eleven eleventh12 twelve twelfth13 thirteen13-19尾加+teen thirteenth13-19尾+th14 fourteen fourteenth15 fifteen fifteenth16 sixteen sixteenth17 seventeen seventeenth18 eighteen eighteenth19 nineteen nineteenth20 twenty20-90(整数)尾+ty twentieth以ty结尾的数词,改y为i,+eth30 thirty thirtieth 40 forty fortieth 50 fifty fiftieth 60 sixty sixtieth 70 seventy seventieth 80 eighty eightieth 90 ninety ninetieth 100 hundred hundredth21 twenty-one依此类推twenty-first基数-序数36 thirty-six thirty-sixth序数词的缩略形式是由阿拉伯数字加序数词的最后两个字母构成。

例如1st,2nd,3rd,4th,21st,32nd,40th注意:少数几个需特别记忆。

口诀:一、二、三特殊记,词尾字母t,d,d;八去t, 九去e,f来把ve替;ty变为tie,th千万别忘记;若是遇上几十几,只变各位就可以。

1. 序数词前要加定冠词the, 在句中作定语放在所修饰的名词前。

如:December is the twelfth month of the year. 十二月是一年中的第12个月。

2. 序数词前加不定冠词a/an, 表示―又一‖、―再一‖的意思。

如:Please try it a second time. 请再试一试。

1. John lives on ______ floor. He doesn't use a lift to go up and down.A. nineB. the ninthC. ninethD. a ninth2. There are ______ students in our school.A. four hundred twentyB. four hundred and t wentyC. four hundreds twentyD. four hundreds and twenty【考点一】基数词表编号编号的事物如果数字较大,一般用基数词表达,且放在编号的事物名词之后。

如:Room 206 (206房间)如果编号的事物数字不大,也可用序数词表达,但它应放在编号名词之前。

如:the first lesson (第一课) 第五课:Lesson 5 = the fifth lesson——Excuse me, how can I go to the market?——You can take ______.A. 7 busB. Bus 7C. NO. 7 BusD. the Bus 7【考点二】基数词表时刻注意:英语时刻表达法有两种:一种是顺读法,如:7:20 (seven twenty)一种是逆读法,如:7:30 (half past seven)1)几点过几分,用past;如:6:25 twenty-five past six2)几点差几分,用to;如:5:45 fifteen to six或a quarter to six整点:基数词+ o’clock(可以省略o`clock)a.m.表示上午,p.m.表示下午。

()How to express 7:45?A.seven past forty-fiveB. a quarter to sevenC. a quarter past eightD. a quarter to eight【考点三】表岁数或年代表示―几十‖的基数词的复数形式,可用来表示某人的大概岁数或年代。

1)世纪可以用the+序数词+century表示,也可以用the+百位进数加" `s"或"s"表示: 公元六世纪the sixth(6th)century二十世纪the 1900`s 或the 1900s在二十世纪三十年代in the 1930`s或in the 1930s2)表示某人的大概岁数:in one's +整十的复数My uncle went to England in his twenties. 我叔叔在20多岁时去了英国。

He became a professor in his thirties.()My father was born ___________, and now he is ___________.A.in the 1960s, in his fortiesB. in 1960s, in the fortiesC. in the 1960, in fortyD. in 1960, in his forty【考点四】含基数词的复合形容词―基数词+名词(+形容词)‖构成的复合形容词作定语时,其中的名词用单数形式。

如:two-week holiday 两周的假; an eighteen-metre-wide street 一条18米宽的街道()The ________ bridge is already open to traffic.A. 32-kilometer- longB. 32-kilometers-longC. 32 kilometers longD. 32-kilometer long表路程的时候用所有格" 's "来表示。

如:How far is it from your home to your school? It’s about ten minute s' walk.【考点五】基数词与“多少又一半”的表达―多少又一半‖的表达有2种方法:一种是―数词+n.(单数或复数)+and a half‖;另一种是―数词+and a half +n.复数‖。

如:―两个半月‖可译为:two months and a half或two and a half months()1. He said he would stay in Beijing for _______.A. two and half monthsB. two and a half monthC. two months and a halfD. two months and half()2. The table is ________ wide.A.one and one half feetB. one and one half footC. one and half a footD. one and a half feet【考点六】年月日表示法1)月日,年2)日月年(the +序数词+of +月, 年)注:年份的读法: 日用序数词,读日时要加the。

月用英语单词,年用基数词。

1949年10月1日: October the first, nineteen forty-nine = the first of October, nineteen forty-nine 2000年: the year two thousand = twenty hundred2001年: twenty o one3)时间的读法:A. 年份用基数词表示,读时可以以hundred为单位,也可以以世纪、年代为单位分别来读。

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