02 数词、代词与介词-2023年暑假新高一英语初高中衔接知识抢先学(通用版).

02 数词、代词与介词 第一部分 数词 一、基数词：表示数目的词为基数词，它的构成如下表： 范 围 特 点 实 例 1~12 无规律 one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve 13~19 以teen为结尾 thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen 20~90 以ty结尾 twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety 21~99 十位与个位之间要加连字符 “-” twenty-five, sixty-five, ninety-nine 101~999 百位与十位之间通常用and three hundred and twenty-five（美语中常将and省略） 千以上 6275—six thousand two hundred and seventy-five；1200—twelve hundred 二、序数词：表示顺序的数词为序数词，它的构成如下表： 范 围 特 点 实 例 1~19 各基数词尾加th 其中七个例外：first, second, third, fifth, eighth, ninth, twelfth, 其余，如：four — forth, six — sixth, nineteen — nineteenth 20,30~90 把y变i后加eth twentieth, fortieth, ninetieth 三、数词的用法 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