Expressing numbers in English can be confusing to both students and those listening. Make sure you understand how to express numbers in spoken English by following these rules.
用英语表达数字，无论是对学生还是听者来说都是容易令人困惑的。通过遵循以下这些规则，可以确保你懂得如何用英语表达数字。

Below you will find numbers written out in order to helps students learn the correct grouping in English. Generally speaking, numbers larger than twenty should always be expressed by numbers in written English:
你会发现下面写出的数字是为了帮助学生学习正确的分组。一般来说，大于二十的数在书面英语中应该用数字表示：

I have fifteen clients in New York.
我在纽约有十五个客户。

She has 240 contacts on her mailing list.
她的邮件列表上有240个联系人。

Tens
十位数

Say individual numbers between one and twenty. After that, use the tens (twenty, thirty, etc.) followed by the numbers one through nine:
一到二十之间，我们读单个的数字。二十往后，使用十位数（二十，三十等），紧接数字一到九：

7 - seven

19 - nineteen

32 - thirty-two

89 - eighty-nine

When expressing large numbers (more than one hundred) read in groups of hundreds. The order is as follows: billion, million, thousand, hundred. Notice that hundred, thousand, etc. is NOT followed by an "s"
当表达大数字时（超过一百），以“百”为单位来读。顺序如下：十亿，百万，千，百。请注意，百、千等词后面不加“s”

Two hundred NOT two hundreds
Two hundred不是two hundreds

Hundreds
百位数

Say numbers in the hundreds by beginning with numerals one through nine followed by "hundred". Finish by saying the last two digits:
读百位数以一到九开始，紧接着“hundred”，以末尾的两位数结束：

350 – three hundred fifty

425 – four hundred twenty-five

873 - eight hundred seventy-three

112 - one hundred twelve

NOTE: British English takes "and" following "hundred." American English omits "and:".
注：英式英语会在“hunderd”后加上“and”。美式英语则省略“and”。

Thousands
千位数

The next group is the thousands. Say a number up to 999 followed by "thousand." Finish by reading the hundreds when applicable:
下一组是千位数。先读出999以内的数字，后面紧接“thousand”，然后必要时，以百位数来结束。

15,560 – fifteen thousand five hundred sixty

786,450 – seven hundred six thousand four hundred fifty

342,713 - three hundred forty-two thousand seven hundred thirteen

569,045 - five hundred sixty-nine thousand forty-five

Millions
百万位

For millions, say a number up to 999 followed by "million." Finish by saying first the thousands and then the hundreds when applicable:
对于百万位的数，先读出999以内的数字，后面紧接“million”，然后必要时，先以千位数，再以百位数来结束。

2,450,000 – two million four hundred fifty thousand

27,805,234 - twenty seven million eight hundred five thousands two hundred thirty-four

934,700,000 – nine hundred thirty-four million seven hundred thousand

589,432,420 - five hundred eighty nine million four hundred thirty-two thousand four hundred twenty

For even larger numbers, first use billions and then trillions in a similar manner to millions:
对于更大的数字，先用十亿位，再用万亿位，然后以相同的方式表达百万位。

23,870,550,000 - twenty-three billion eight hundred seventy million five hundred fifty thousand

12,600,450,345,000 - twelve trillion six hundred billion four hundred fifty million three hundred forty-five thousand

Large numbers are often rounded to the next biggest or next smallest number to make things easier. For example, 345,987,650 is rounded to 350,000,000.
过于大量的末尾数往往被舍入到下一位最大或最小的整数，这样就使读数变得更容易。例如，345987650被舍入到350000000。

Decimals
小数

Speak decimals as the number followed by "point." Next, say each number beyond the point individually:
读小数就读出数字，紧接着加上“point”。然后后面的数字分别单独来读就行。

2.36 - two point three six

14.82 - fourteen point eight two

9.7841 -nine point seven eight four one

3.14159    - three point one four one five nine

Percentages
百分数

Speak percentages as the number followed by "percent"
读百分数就读出数字，紧接“percent”

37% - thirty-seven percent

12% - twelve percent

87% - eighty-seven percent

3% - three percent

Fractions
分数

Speak the top number as a cardinal number, followed by the ordinal number + "s"
分数线上面的数字读基数词，分数线下面的数字读序数词加“s”。

3/8 - three-eighths

5/16 - five-sixteenths

7/8 - seven-eighths

1/32 - one thirty-second

Exceptions to this rule are:
这个规则的例外情况是：

1/4, 3/4 - one-quarter, three quarters

1/3, 2/3 - one third, two-thirds

1/2 - one-half

Read numbers together with fractions by first starting the number followed by "and" and then the fraction:
读带分数的方法是先读前面的数字，再加上“and”，然后读分数。

4 7/8 - four and seven-eighths

23 1/2 - twenty-three and one-half

Important Numerical Expressions
重要的数字表达

Here are the descriptive names of a number of important numerical expressions:
下面是描述性名称的重要数值表达：

Speed - 100 mph (miles per hour)
速度 - 100英里/小时（英里/小时）

Read speed as numbers: One hundred miles per hour
读速度值: One hundred miles per hour

Weight - 42 lb. (pounds)
重量 - 42磅（磅）

Read weight as numbers: forty-two pounds
读体重值：forty-two pounds

Telephone number - 0171 895 7056
电话 - 0171 895 7056

Read telephone numbers in individual numbers: zero one seven one eight nine five seven zero five six
读电话要单独读出每个数字：zero one seven one eight nine five seven zero five six

Dates - 12/04/65
日期 - 12/04/65

read dates, month, day, year
读出日期，月，日，年

Temperature - 72° F (Fahrenheit)
温度 - 72华氏度（华氏温度）

Read temperature as "degrees +number": seventy-two degrees fahrenheit
读温度的方式是“degrees +number”： seventy-two degrees fahrenheit

Height - 6'2''
高度 - 6'2''

Read height in feet and then inches: six feet two inches
读高度，先读英尺，再读英寸： six feet two inches

Price - $60
价格 - $60

Read the currency first the number, then the currency: Sixty dollars
读钱数，先读数字，再读货币单位：Sixty dollars

Express dollars by stating the dollar amount followed by cents:
表达美元，先读美元，再读美分：

$43.35 - forty-three dollars thirty-five cents

$120.50 - one hundred twenty dollars fifty cents

Native speakers often just say first the dollar number and then the cents number and drop "dollars" and "cents"
以英语为母语的人，经常只先说美元，然后是美分的数字，通常省略“dollars”和“cents”

35.80 - thirty-five eighty

175.50 - one hundred seventy-five fifty

Score - 2-1
比分 - 2 - 1

Read scores as "number + to + number": Two to one
读分数这样读：“数字 ＋ to ＋ 数字”：Two to one

Ordinal Numbers
序数词

Ordinal numbers are used when speaking about the day of the month, or the position in a group. Most numbers end in 'th', except "first", "second", and "third" of every ten numbers:
序数词是用来表达某月中的某一天，或在一个群体中的位置。除了个位十个数字中的“第一”、“第二”和“第三”外，大多数序数词都以“th”结尾：

2nd - second
第二

3rd - third
第三

5th - fifth
第五

17th - seventeenth
第十七

8th - eighth
第八

21 - twenty-first
第二十一

46 - forty-sixth
第四十六