2,648 two thousand six hundred and forty-eight
16,250,064 sixteen million two hundred and fifty thousand and sixty-four
(4)基数词在表示确切的数字时，不能使用百、千、百万、十亿的复数形式；但是，当基数词表示不确切数字，如成百、成千上万，三三两两时，基数词则以复数形式出现 。
There are hundreds of people in the hall. 大厅里有数以百计的人 。
Thousands and thousands of people come to visit the Museum of Qin Terra-Cotta Warriors and Horses every day. 每天有成千上万的人来参观秦兵马俑博物馆 。
参考资料：百度百科——基数词
4. 英语日期1 1.日期1-31:1st 2nd 3rd 4th 5th 6th.30th 31st1-5:first second third fourth fifth 6-10:sixth seventh eighth ninth tenth 11-15:eleventh twevlfth thirteenth fourteenth fifteenth 16-20:sixteenth seventeenth eighteenth nineteenth twentieth 21-25:twenty- first twenty-second twenty-third twenty-fourth twenty-fifth 26-30:twenty-sixth twenty-seventh twenty-eighth twenty-ninth tirtieth 31:thirty-first 数字加后缀就行了 除了1 2 3 结尾的比较特殊（1加st 2加nd 3加rd）其他都是加th2.月份一月 January二月 February三月 March四月 April五月 May六月 June七月 July八月 august九月 September十月 October十一月November十二月December3.星期星期日 Sunday星期一 Monday星期二 Tuesday星期三 Wednesday星期四 Thursday星期五 Friday星期六 Saturday4.楼层的英语表达法：地面之上的部分，序数词+floor就可以了，但是英美习惯不同，British convention有Ground floor，再上一层是first floor,American convention通常不使用Ground floor，且再上一层是second floor.British convention American convention 十层 9th floor 10th floor九层 8th floor 9th floor八层 7th floor 8th floor七层 6th floor 7th floor六层 5th floor 6th floor五层 4th floor 5th floor 四层 3rd floor 4th floor 三层 2nd floor 3rd floor 二层 1st floor 2nd floor 一层 Ground floor Ground or 1st floor ) 。
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