数词的用法有哪些啊?

1.英语中年月日、点钟、序数词、分数词、算式列表
示例 英语表示法
2001．6．30 June 30,2001 30June,2001 30thJune,2001
7：25 seven twenty-five twenty-five past even
12:54 twelve fifty four six to one
9:15 nine fifteen a quarter past nine
2:30 two thirty half past two
21:50 twenty-one fifty 9:50p.m.
第21 twenty-first
第123 one hundred and twenty-third
a half
two and two-fifths
20% 20 per cent 20 percent
第七路公共汽车 Bus Number Seven
第201房间 Room 201
人民路153号 153 Renmin Road
4+8 =12 Four plus eight is twelve
11-7=4 Eleven minus seven is four.
6×5=30 Six times five is thirty.
20÷5=4 twenty divided by five is four.
A＞B A is more than B.
A＜B A is less than B.
A≈B A is approximately (近似地,大约)equals to B.
A≠B A is not equal to B.
2.约数表示法列表
含义 英语表达 例句
大于某数 more than He has lived here for more than twenty years.
over she is over fifty.
or more There're thirty people or more in the meeting-room.
小于某数 less than I have less than (not more than )fifty dollars.
under Children under seven are not allowed to enter.
below He would not sell it for below a hundred fifty dollars.
or less The coat might cost him sixty dollars or less.
大约（某数） nearly She is nearly fifty now.
almost Its almost three o'clock.
up to Up to ten men can sleep in this tent.
or He spent four or five days writing the article.
or so The distance is twenty miles or so.
about I visited that village about three years ago.
some Their team has some four or five players.
more or less The container can hold more or less twenty pounds of water.
around/round Let's make it round/around eight o'clock.
3.不定数量词“多”的表示法列表
被修饰名词的数 英语表达 汉译
修饰可数名词 dozens of 几十、许多
scores of 许多
many,a good(great) many,many a (饰单数可数名词) 许多、大量
hundreds of 数以百计
thousands of ,thousands upon thousands of 成千上万
millions of 数百万
billions of 亿万
修饰不可数名词 much ,a great (good)deal of ,
a large amount of ,large amounts of 许多、大量
修饰可数名词或不可数名词 a lot of /lots of ,plenty of,a large quantity of ,
large quantities of 许多、大量