―There is no spare chair in the meeting room .Do you still need any?
―Yeah ,I think four chairs are needed for the lecture this afternoon.
A．dozen B．dozens C．dozen of D．dozens of
小数(decimal)的概述：
小数点读作point，小数点左边按整数的基数词(one,two,three...)读，小数点右边依次用个位数的基数词读出。整数部分为零时，小数点可以省略不读。当小数大于1时，小数后面的名词用复数，小数小于1时，小数后面的名词用单数。
| 数字 | 表示法 |
| 0.4 | naught O zero point four; point four |
| 0.128 | naught O zero point one two eight; point one two eight |
| 0.305 | naught O zero point three o five; point three zero five |
| 数字 | 表示法 |
| 5.02 | five point naught O zero two; five point o two |
| 8.004 | eight point naught naught O zero zero four; eight point o o four |
| 33.33 | thirty-three point three three |
| 数字 | 表示法 |
| 8.3万 | (83,000) eighty-three thousand |
| 723.64万 | (7,236,400) seven mil-lion, two hundred and thirty-six thousand, four hundred |
| 17.03亿 | (1,703,000,000) one point seven o three billion; one billion, seven hundred and three million |
小数的读法：
小数点读作point，小数点左边按整数的基数词（one, two, three...）读，小数点右边依次用个位数的基数词读出。整数部分为零时，小数点可以省略不读。当小数大于1时，小数后面的名词用复数，小数小于1时，小数后面的名词用单数。
1、小于"1"的小数：
小数点左边的零读做naught（英）或zero（美），也可不在小数点后遇到零时，可读做naught或zero，也可以读做字母"o"的音，例如：
| 数字 | 表示法 |
| 0.4 | zero point four; point four |
| 0.456 | zero point four five six; point four five six |
| 0.213 | zero point two one three; point two one three |
| 数字 | 表示法 |
| 4.51 | four point five one; |
| 2.005 | two point zero zero five; two point o o five |
| 19.11 | nineteen point one one |
| 数字 | 表示法 |
| 5.6万 | fifty-six thousand (56,000) |
| 765.48万 | seven million, six hundred and five-four thousand, eight hundred (7,654,800) |
| 17.03亿 | one point seven o three billion; one billion, seven hundred and three million (1,703,000,000) |
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