8.有些基数词可以构成固定词组, 如: one by one, twos and threes三三两两

7.表示百分比的说法: 基数词+ percent

6.表示倍数的说法:

　　　　 　a. This room is three times bigger than that one.

　　　　 　b. The dictionary is four times thicker than that book.

　　　　 　c. The earth is 49 times the size of the moon.

5.表示加减乘除的说法: 数学运算的加减乘分别用plus, minus, times, divided by表示

　　　　 　a. How much is fifteen plus two?

b. How much is eight minus seven?

　　　　 　c. How much is twelve times twelve?

　　　　 　d. How much is eighty-one divided by nine?

　　　　 　e. Five plus three is / equals eight.

　　　　 　f. Five minus three equals / leaves two.

　　　　 　g. Five times three makes / is fifteen.

　　　　 　h. Fifteen divided by three equals five.十五除以三等于五

4.表示时间时用基数词:

　　 ①.表示几点整的说法: It is five (o’clock)

　　 ②.表示几点过几分的说法: 若不超过30分钟, 用past表示过几分; 若超过30分钟, 用to表示差多少分到几点, 如: 3:05 =five past three,　 5:20 =twenty past five;　 8:35 =twenty-five to nine;　 12:50 =ten to one

　 　③.表示几刻钟的说法, 如: a quarter, three quarters

　　 ④.表示上午,下午某时间, 如: 8:00 a.m., 4:15 p.m.

⑤.时刻也用24小时制读法, 只须依次读出点钟数和分钟数, 整点钟时, 需在最后加读hundred ( hours), 如: 18:45读作eighteen forty-five, 18:00读作eighteen hundred ( hours ), 以上提到的3:05, 5:20, 8:35分别也可读作three five, five twenty, eight thirty-five

3.在表示年月日时, 年用基数词, 日用序数词, 年的读法是, 从后往前, 将年份分成两位一段, 依次读出每一段即可, 如: April 5,1976 读作April (the) fifth, nineteen seventy-six;　 October 1, 1949读作October the first, nineteen forty-nine;　 年份1905读作nineteen hundred and five;　 年份1800读作eighteen hundred;　 年份2000读作year two thousand;　 年份502 B.C.读作five o two B C;　 年份A.D. 620读作six twenty A D

2.编号的事物若数字较大, 一般用基数词放在名词后面来表示, 名词前一般不用定冠词, 如: room 302, page 215, No. 101 middle school

1.编号的事物可用序数词或基数词加名词构成, 如: the fourth lesson =lesson four, the fifteenth page =page fifteen, the ninth part =part nine

4.不规则的序数词如下: the first, the second, the third, the fifth, the eighth, the ninth, the twelfth

3.大于二十的基数词对应的序数词, 只将末位数变为序数词, 前面的其他位数仍用基数词, 如: 第532读作five hundred and thirty-second