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初中英语数词练习题及答案

初中英语数词练习题及答案
初中英语数词练习题及答案

初中英语数词练习题及答案

初中英语数词练习题及答案

基数词

基数词用来表示数目,或者说表示数量的词叫基数词。最基本的基数词如下表所示。

说明: 1(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。 (20—90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。

3(其它非整十的两位数21—99是由整十位数加连字符“-”,再加个位数构成。如:1 eighty-one。

4(101—999的基数词先写百位数,后加and再写十位数和个位数。如:91 six hundred and ninety-one。

5(1000以上的基数词先写千位数,后写百位数,再加and,最后写十位数和个位数。

如:589five thousand eight hundred and

ninety-three。在基数词中只有表示“百”、“千”的单位词,没有单独表示“万”、“亿”的单位词,而是用thousand和million来表达,其换算关系为:1万=10 thousand;1亿=100 million; 10亿=a thousand million=a billion。 (多位数的读法:

1)1000以上的多位数,要使用计数间隔或逗号“,”。即从个位起,每隔三位加一个间隔或逗号。第一个间隔或逗号前是thousand,第二个间隔或逗号前是million,第三个

间隔或逗号前是a thousand million或a billion。

2)每隔三位分段以后就都成了101—999。读的时候

十位数的前面一般要加and。如:

888,000,000读作:eight hundred and eighty-eight million。基数词的用法:

1. 基数词在句中的作用

基数词的作用相当于名词和形容词,在句中可作定

语、主语、宾语、表语、同位语等。

例如:Three and five is eight.+5=How many oranges

do you want?你要多少桔子,

我要八个。湖里有八条小船。 (Hundred, thousand, million, dozen, score这些词前面如有表示具体数

字的词,它们不能加“s”,反之则须加“s”,并

要与of短语连用。例如:three hundred people, five thousand years;

thousands of people, hundreds of students,

thousands of trees

序数词

表示顺序的词,叫序数词。序数词用来表示数词顺序。

除特殊情况外,序数词一般都由相应的基数词加后缀-th构成。

说明:

1(英语中表示第一、第二、第三的序数词属特殊形式,要注意它们的拼写。

2(表示“几十”的序数词通常是将基数词词尾y变成i再加上后缀-eth。 (其余的二位数序数词是以相应的整十基数词加个位序数词。如:fifty-first。

4(少数序数词拼法不规则,如:fifth,eighth,ninth,twelfth等。

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