数字在英语中无处不在,无论是日常交流、商务谈判还是学术研究，掌握数字相关的英文单词都至关重要，本文将系统介绍数字类英文单词的分类、用法及常见场景，帮助读者全面理解并灵活运用。
基础数字（Cardinal Numbers）
基础数字用于表示数量或顺序,是最常见的数字表达形式。
0-10的数字
- 0 – zero
- 1 – one
- 2 – two
- 3 – three
- 4 – four
- 5 – five
- 6 – six
- 7 – seven
- 8 – eight
- 9 – nine
- 10 – ten
11-20的数字
- 11 – eleven
- 12 – twelve
- 13 – thirteen
- 14 – fourteen
- 15 – fifteen
- 16 – sixteen
- 17 – seventeen
- 18 – eighteen
- 19 – nineteen
- 20 – twenty
十位数（20-90）
- 20 – twenty
- 30 – thirty
- 40 – forty
- 50 – fifty
- 60 – sixty
- 70 – seventy
- 80 – eighty
- 90 – ninety
百位数及以上
- 100 – one hundred
- 1,000 – one thousand
- 10,000 – ten thousand
- 100,000 – one hundred thousand
- 1,000,000 – one million
- 1,000,000,000 – one billion
序数词（Ordinal Numbers）
序数词用于表示顺序或排名,通常在数字后加“-th”“-st”“-nd”或“-rd”构成。
1-10的序数词
- 1st – first
- 2nd – second
- 3rd – third
- 4th – fourth
- 5th – fifth
- 6th – sixth
- 7th – seventh
- 8th – eighth
- 9th – ninth
- 10th – tenth
11-20的序数词
- 11th – eleventh
- 12th – twelfth
- 13th – thirteenth
- 14th – fourteenth
- 15th – fifteenth
- 16th – sixteenth
- 17th – seventeenth
- 18th – eighteenth
- 19th – nineteenth
- 20th – twentieth
十位数及以上的序数词
- 21st – twenty-first
- 30th – thirtieth
- 100th – one hundredth
- 1,000th – one thousandth
分数（Fractions）
分数用于表示部分与整体的关系,通常由基数词和序数词组合而成。
常见分数表达
- 1/2 – one half
- 1/3 – one third
- 1/4 – one quarter / one fourth
- 2/3 – two thirds
- 3/4 – three quarters
复杂分数
- 5/8 – five eighths
- 7/10 – seven tenths
- 1 1/2 – one and a half
小数（Decimals）
小数用于表示非整数数值,英语中用“point”分隔整数和小数部分。
基本读法
- 5 – zero point five
- 25 – one point two five
- 1416 – three point one four one six
货币中的小数
- $4.99 – four dollars and ninety-nine cents
- €10.50 – ten euros and fifty cents
百分比（Percentages）
百分比表示比例,由数字加“percent”构成。
- 25% – twenty-five percent
- 50% – fifty percent
- 100% – one hundred percent
时间和日期中的数字
时间表达
- 9:00 – nine o’clock
- 3:15 – three fifteen / a quarter past three
- 6:30 – six thirty / half past six
- 12:45 – twelve forty-five / a quarter to one
日期表达
- January 1st – January first
- July 4th – July fourth
- December 25th – December twenty-fifth
电话号码和编号
电话号码
- 555-1234 – five five five, one two three four
- +1 (212) 555-0199 – plus one, two one two, five five five, zero one nine nine
房间号、航班号等
- Room 205 – Room two zero five
- Flight BA 789 – Flight B A seven eight nine
数学运算符号
基本运算
-
– plus
-
– minus
- × – times / multiplied by
- ÷ – divided by
- = – equals
进阶运算
- √ – square root
- ² – squared
- ³ – cubed
特殊数字表达
罗马数字
- I – 1
- V – 5
- X – 10
- L – 50
- C – 100
- D – 500
- M – 1,000
科学计数法
- 5 × 10³ – one point five times ten to the power of three
常见应用场景
购物
- “This shirt costs $29.99.”
- “I’ll take two of these.”
年龄
- “She is twenty-five years old.”
地址
- “I live at 42 Maple Street.”
统计数据
- “Over 60% of users prefer mobile browsing.”
数字类英文单词的掌握不仅有助于日常交流,还能提升语言表达的精确性，通过系统学习和反复练习，读者可以更自信地运用这些词汇。
