百位数的构成
100: one hundred
101-199的读写
101: one hundred and one
110: one hundred and ten
120: one hundred and twenty
199: one hundred and ninety-nine
200-900的读写
200: two hundred
300: three hundred
以此类推，直到900
201-299的读写
201: two hundred and one
210: two hundred and ten
以此类推，直到299
301-399的读写
301: three hundred and one
310: three hundred and ten
以此类推，直到399
以此类推，直到999
数字组合的读写规则
两位数的读写
23: twenty-three
47: forty-seven
86: eighty-six
三位数的读写
123: one hundred and twenty-three
456 four hundred and fifty-six
789: seven hundred and eighty-nine
四位数的读写
1000: one thousand
2000: two thousand
以此类推，直到9999
1001: one thousand and one
2010: two thousand and ten
以此类推，直到9999
特殊数字的读写
0: zero
1000以上数字的读写
1001: one thousand and one
10000 ten thousand
100000: one hundred thousand
1000000: one million
数字的使用场景
日常生活中的数字使用
计数: one, two, three...
时间: o'clock, half past...
日期: first, second, third...
学术领域的数字使用
数学: addition, subtraction, multiplication, division
科学: measurements, data analysis
商业领域的数字使用
财务报告: figures, statistics
交易: prices, quantities
技术领域的数字使用
编程: variables, arrays
数据科学: algorithms, models
数字的发音规则
单词结尾的发音
one wʌn
two tuː
three θriː
单词中间的发音
seven ˈsɛv.ən
eight eɪt
nine naɪn
复合数字的发音
twenty-one ˈtwɛn.ti ˈwʌn
thirty-two ˈθɜːr.ti tuː
forty-three ˈfɔːr.ti θriː
特殊数字的发音
zero ˈzɪroʊ
hundred ˈhʌn.drəd
thousand ˈθaʊ.zənd
million ˈmɪl.jən
数字的拼写规则
单词结尾的拼写
one: e
two: o
three e
单词中间的拼写
seven: e
eight: a
nine: i
复合数字的拼写
twentyone: twenty-one
thirty-two: thirty-two
forty-three: forty-three
特殊数字的拼写
zero: z-e-r-o
hundred: h-u-n-d-r-e-d
thousand: t-h-o-u-s-a-n-d
million: m-i-l-l-i-o-n
