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基 数 词 与 序 数 词

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基
数 词 与 序 数 词
基数词（cardinal numbers ）:
1～19 one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen fifteen, sixteen, seventeen, eighteen, nineteen;
20～29 twenty, twenty-one, twenty-two, twenty-three, twenty-four twenty-five, twenty-six, twenty-seven, twenty-eight, twenty-nine;
30～100 thirty (30), forty (40), fifty (50), sixty (60), seventy (70), eighty (80), ninety (90), a/one hundred (100), two hundred (200).
a/one thousand (1000), two thousand (2000), ten thousand (10,000) a/one million (100,000); a/one billion (10000,0000)
序数词（ordinal numbers ）:
1st ～29th first(1st ), second(2nd ),third(3rd ),fourth, fifth, sixth, seventh, eighth, ninth, tenth,
eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh, twenty-eighth, twenty-ninth;
30th ～100th thirtieth, thirty-first, thirty-second, thirty-third, thirty-fourth, thirty-fifth, thirty-sixth,
thirty-seventh, thirty-eighth, thirty-ninth,
fortieth, forty-first, forty-second, forty-third, forty-fourth, forty-fifth, forty-six.
forty-seventh, forty-eighth, forty-ninth,
fiftieth, fifty-first, fifty-second, fifty-third, fifty-fourth, fifty-fifth, fifty-sex, fifty-seventh,
fifty-eighth, fifty-ninth,
sixtieth, sixty-first, fifty-second, fifty-third, seventieth, seventy-first, seventy-second, seventy-third; eightieth, eighty-first, eighty-second, eighty-third; ninetieth, ninety-first, ninety-second, ninety-third, hundredth;
序数词必须与定冠词（the ）连用。

虽然有时不在形式上表现出来，在朗读的时候也必须读 the: the
nineteenth century （19世纪） the second picture （第二张画）。

人称代词表。

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基数词和序数词用法

基数词和序数词用法

基数词和序数词是表示数量或顺序的词语，它们在语法和用法上有一些区别：
基数词（Cardinal Numbers）：基数词用来表示数量或计数。

它们用来回答“有多少”这样的问题。

例如：一（1）、两（2）、三（3）、十（10）等。

基数词可以用于数数、计量、描述数量等情况。

示例用法：
我有三个苹果。

这个包里有十个糖果。

他每天跑五公里。

序数词（Ordinal Numbers）：序数词用来表示顺序或次序。

它们用来回答“第几个”这样的问题。

例如：第一（1st）、第二（2nd）、第三（3rd）、第十（10th）等。

序数词常用于排序、日期、年级等表示顺序的场景。

示例用法：
我是第五名参赛者。

今天是九月十日。

他在我们年级中排名第三。

基数词和序数词在形式上有时会有不同的表示方式。

例如，基数词“一”在序数词中表示为“第一”，基数词“二”在序数词中表示为“第二”。

此外，序数词在英语中通常以后缀"-th" 或"-st" 表示，例如：fourth（第四）、first（第一）等。

基数词用于表示数量和计数，而序数词用于表示顺序和次序。

在使用时，要根据具体的语境和需要选择适当的词类。

1～40的基数词和序数词

1～40的基数词和序数词

1～40的基数词和序数词1. 基数词（1-40）：- 1 - one- 2 - two- 3 - three- 4 - four- 5 - five- 6 - six- 7 - seven- 8 - eight- 9 - nine- 10 - ten- 11 - eleven- 12 - twelve- 13 - thirteen- 14 - fourteen- 15 - fifteen- 16 - sixteen- 17 - seventeen- 18 - eighteen- 19 - nineteen- 20 - twenty- 21 - twenty-one- 22 - twenty-two- 23 - twenty-three- 24 - twenty-four- 25 - twenty-five- 26 - twenty-six- 27 - twenty-seven- 28 - twenty-eight- 29 - twenty-nine- 30 - thirty- 31 - thirty-one- 32 - thirty-two- 33 - thirty-three- 34 - thirty-four- 35 - thirty-five- 36 - thirty-six- 37 - thirty-seven- 38 - thirty-eight- 39 - thirty-nine- 40 - forty2. 序数词（1-40）：- 1st - first- 2nd - second- 3rd - third- 4th - fourth- 5th - fifth- 6th - sixth- 7th - seventh- 8th - eighth- 9th - ninth- 10th - tenth- 11th - eleventh- 12th - twelfth- 13th - thirteenth- 14th - fourteenth- 15th - fifteenth- 16th - sixteenth- 17th - seventeenth- 18th - eighteenth- 19th - nineteenth- 20th - twentieth- 21st - twenty-first- 22nd - twenty-second- 23rd - twenty-third- 24th - twenty-fourth- 25th - twenty-fifth- 26th - twenty-sixth- 27th - twenty-seventh- 28th - twenty-eighth- 29th - twenty-ninth- 30th - thirtieth- 31st - thirty-first- 32nd - thirty-second- 33rd - thirty-third- 34th - thirty-fourth- 35th - thirty-fifth- 36th - thirty-sixth- 37th - thirty-seventh- 38th - thirty-eighth- 39th - thirty-ninth- 40th - fortieth基数词是用来表示数量或者计算的词语，而序数词则表示顺序或者顺序位置。

基数词和序数词

基数词和序数词

基数词和序数词基数词：eleven ,twelve ,thirteen , fifteen ,eighteen, twenty , thirty , forty , eighty ,特殊记忆。

基数词的读法：21---twenty—one101---a hundred and one 320--- three hundred and twenty648 --- six hundred and forty ---eight2,648--- two thousand sixhundred and forty---eight 16,250,064—sixteen million two thousand and fifty thousand and sixty—four序数词的变法：一二三单独记，first , second , third,8减t eighth ,9去e ninth,字母 f 代替ve fifth /twelfth ,ty 变成tie twentieth ,末尾词单独变，twenty---first .序数词的缩写形式：first—1st , second---2nd ,third –3rd, fourth ---4th,sixth–6th ,twentieth—20th ,twenty —third ---23rd .分数词的读法：分子基数词，分母序数词，分子大于一，分母变复数。

三分之二：two thirds四分之三：three fourths/three quarters二分之一：one second /a half年代的读法：(1)in the 1980s 在20世纪80年代(2) 1949 nineteen and forty--nine基数词和序数词的用法：1.in his thirties2.Lesson six /the sixth lesson3.Room 3064.his thirtieth birthday5.the second day of the week6.Tom’s second medal7.the twenty—first century8.May fifth /May the fifth /the fifth of May时间表达法：。

基数词和序数词

基数词和序数词

基数词和序数词一．表示数目多少的词叫基数词：二．表示顺序的数次叫序数词：注意：Hundred thousand million1.其前有具体数字时，用单数：There are thousand students in this in this school.这所学校大约有2000名学生。

2.前无数词，模糊数字+s+of短语: Hundreds of people come to see our play.It’s so great.成百的人来看我们的戏剧，它太成功了。

3.基数词变序数词口诀：基变序，很容易，结尾加上th。

一二三特殊记，结尾各是t,d,d。

八去t,九去e,f来把ve替，y改为ie,结尾仍有th。

若是遇到几十几，只变个位就可以。

三．基数词的用法：1.基数词在句中可用作主语、宾语、表语、定语和同位语。

主语：Four of them went to the factory. 他们四个人去了工厂。

宾语：I want two. 我要两个。

定语：There thirty classrooms in our school. 我们学校有30个教室。

表语：My classmate is eighteen. 我的同学18岁。

He is only three,and he can’t dress himself. 他只有三岁，不会穿衣服。

同位语：We three will go there together. 我们3个一起去。

注意：1以上的基数词作定语时，它所修饰的名词要用复数形式：The road is 16 meters in width. 这条路十六米宽。

18 American students came to our school yesterday. 昨天有18个美国学生来到我校。

四．序数词的用法：1.序数词可以在句子中当主语、宾语、定语、表语。

主语：The second is what I really need. 第二个是是我真正需要的。