范  围

特  点

实    例

1~12

无规律

 one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve

13~19

以teen为结尾

 thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen

20~90

以ty结尾

 twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety

21~99

十位与个位之间要加连字符 “-”

 twenty-five, sixty-five, ninety-nine

101~999

百位与十位之间通常用and

 three hundred and twenty-five（美语中常将and省略）

千以上

 6275—six thousand two hundred and seventy-five；1200—twelve hundred

范  围

特  点

实    例

1~19

各基数词尾加th

其中七个例外：first, second, third, fifth, eighth, ninth, twelfth, 其余，如：four — forth, six — sixth, nineteen — nineteenth

20,30~90

把y变i后加eth

 twentieth, fortieth, ninetieth

21以后多位数

最后一个数用序数词，其余用基数词

 21st — twenty-first, 110th — one hundred and tenth

示例

英语表示法

2001．6．30

June 30,2001  30June,2001  30thJune, 2001

7：25

seven twenty-five  twenty-five past even

12:54

twelve fifty four  six to one

9:15

nine fifteen  a quarter past nine

2:30

two thirty  half past two

21:50

twenty-one fifty  9:50p.m.

第21

twenty-first

第123

one hundred and twenty-third

a half

two and two-fifths

20%

20 per cent  20 percent

第七路公共汽车

Bus Number Seven

第201房间

Room 201

人民路153号

153 Renmin Road

4+8 =12

Four plus eight is twelve

11-7=4

Eleven minus seven is four.

6×5=30

Six times five is thirty.

20÷5=4

twenty divided by five is four.

A＞B

A is more than B.

A＜B

A is less than B.

A≈B

A is approximately (近似地, 大约)equals to B.

A≠B

A is not equal to B.

含义

英语表达

例句

大于某数

more than

He has lived here for more than twenty years.

over

she is over fifty.

or more

There're thirty people or more in the meeting-room.

小于某数

less than

I have less than (not more than )fifty dollars.

under

Children under seven are not allowed to enter.

below

He would not sell it for below a hundred fifty dollars.

or less

The coat might cost him sixty dollars or less.

大约（某数）

nearly

She is nearly fifty now.

almost

Its almost three o'clock.

up to

Up to ten men can sleep in this tent.

or

He spent four or five days writing the article.

or so

The distance is twenty miles or so.

about

I visited that village about three years ago.

some

Their team has some four or five players.

more or less

The container can hold more or less twenty pounds of water.

around/round

Let's make it round/around eight o'clock.

被修饰名词的数

英语表达

汉译

修饰可数名词

dozens of

几十、许多

scores of

许多

many, a good(great) many, many a (饰单数可数名词)

许多、大量

hundreds of

数以百计

thousands of ,thousands upon thousands of

成千上万

millions of

数百万

billions of

亿万

修饰不可数名词

much , a great (good)deal of ,

a large amount of ,large amounts of

许多、大量

修饰可数名词或不可数名词

a lot of /lots of ,plenty of, 　　a large quantity of ,

large quantities of

许多、大量