数词用法_英语语法_(小学英语语法数词)

《英语:数词+连字符+名词的用法》

数词+连字符+名词 通常做名词的定语 名词用单数形式

如 : a five-year-old boy

a ten-mile walk 十里路 

     two-hundred trees 两百棵树

     a five-year plan. 一个五年计划

《高中英语语法及其用法》

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介绍一本书“`

《无敌高中英语语法》 华克捷 主编

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配用 《无敌英语语法满分练习》效果不错“`

亲身体会““

《英语数词有哪些用法?》

数词分基数词和序数词。基数词表示数目,序数词表示顺序。

1. 基数词的用法

(1) 基数词在句中主要用作主语、宾语、定语、表语、同位语,例如:

Thirty of them are Party members. (主语)

— How many would you like ?

— Three , please .(作宾语)?

The nine boys are from Tianjing. (定语)?

Six plus four is ten. (表语)?

We four will go with you. (同位语)

(2) 表示一个具体数字时, hundred, thousand, million 一律不用复数;在表示一个不确定数字时则用复数。例如:

Our country has a population of 1,300 million people.

There are three thousand students in our school.

After the war, thousands of people became homeless.

Maize is the most important food crop for millions of people in the world.

They arrived in twos and threes .

(3) 表示 “…… 十 ” 的数词的复数形式可用来表示人的岁数或年代,例如:

He is in his early thirties. He died still in his forties. This took place in 1930s.

(4) 表示时刻用基数词。例如:

We get up at six. The workers begin work at eight.

表示 “ 几点过几分 ” ,用介词 past, 但须在半小时以内。例如:

ten past ten, a quarter past nine, half past twelve

表示 “ 几点差几分 ” 用介词 to, 但分数须在半小时以上。例如:

twenty to nine, five to eight, a quarter to ten

表示 “ 几点几分 ” 还可直接用基数词。例如:

seven fifteen, eleven thirty, nine twenty

2. 序数词的用法

(1)序数词主要用作定语,前面要加定冠词,例如:

The first truck is carrying a foot baskets. John lives on the fifteenth floor .

(2)序数词有时前面可加不定冠词来表示 “ 再一 ” , “ 又一 ” 这样的意思,例如:

We’ll have to do it a second time. Shall I ask him a third time?

When I sat down, a fourth man rose to speak.

(3)由几个序数词和基数词在拼写时不对应,很容易写错,应特别注意。它们是:one—first, two—second, three—third, five—fifth, eight—eighth, nine—ninth, twelve—twelfth 。

(4)表示年,月,日时, 年用基数词表示,日用序数词表示。例如:

1949 年十月一 日 读作 : October (the) first, nineteen sixty

2004 年九月十 日 读作: September (the) tenth, two thousand and four

(5)表示分数时,分子用基数词表示,分母用序数词表示。分子大于 1 时,分母加 -s 。例如:

three fourths, one second, wo fifths

(6)序数词有时用缩写形式:?

first → 1st, second → 2nd, third → 3rd, fourth → 4th, twenty-second → 22nd

英语中的数词是指表示数目多少或顺序先后的词。表示数目多少的数词叫基数词,如 one, five, ten, thirty,sixty-five 等;表示顺序先后的数词叫序数词,如 first, sixth, tenth, twenty-first 等。数词用法相当于名词和形容词,在句中可用作主语、宾语、表语、定语、同位语等。

百度知道:

《英语中数词的用法及例句》

一、基数词

1)基数词写法和读法: 345 three hundred and forty-five;

2)基数词一般是单数形式,但下列情况,常用复数:

a. 与of 短语连用,表示概数,不能与具体数目连 用,如scores of people 指许多人;

b. 在一些表示”一排”或”一组”的词组里;

如:They arrived in twos and threes. 他们三三两两的到达了。

c. 表示”几十岁”;

d. 表示”年代”,用 in +the +数词复数;

e. 在乘法运算的一种表示法里,如:3 x 5 = 15 Three fives is (are) fifteen.

二、序数词

序数词的缩写形式: first—1st second—2nd thirty-first—31st

三、 数词的用法

1)倍数表示法

a. 主语+谓语+倍数(或分数)+ as + adj. + as

I have three times as many as you. 我有你三倍那么多。

b. 主语+谓语+倍数(分数)+ the size (amount,length…) of…

The earth is 49 times the size of the moon. 地球是月球的49倍。

c. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…

The grain output is 8 percent higher this year than that of last year.

今年比去年粮食产量增加8%。

d. 还可以用by+倍数,表示增加多少倍

The production of grain has been increased by four times this year.

今年粮食产量增加了4倍。

2)分数表示法

构成:基数词代表分子,序数词代表分母。分子大于1时,分子的序数词用单数,分母序数词用复数:

1/3 one-third ; 3/37 three and three-sevenths.

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