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初中英语专辑---数词ltzzjr数词分为基数词和序数词。
用于表示事物数目的词称为基数词，表示事物顺序的词称为序数词。
一．基数词的读法13.5.二.基数词变序数词的方法：b. 分钟>30分钟)用to eg. 3:35 twenty-five (minutes) to four8:40 ___________________ 7:55___________________c. 30分钟 = half 15分钟 = a quartereg. 3:30 three thirty = __________________________3:15 three fifteen = _________________________3:45 three forty-five = _______________________2.日期表达法：月日，年（或日月年）1949年10月1日:October 1st , nineteen forty-nine=the first of October, nineteen forty-nine 2000年: the year two thousand = twenty hundred2001年: twenty o one3月1日: March the first = the first of March3、表编号：第207房间：Room 207 = the seventh room on the second floor注意：表约数时hundred, thousand, million前面无具体数词，它们都用复数形式，且用of 连接复数名词；表确切量时，不管是几百，几千，几百万, hundred, thousand, million都用单数，其后直接跟复数名词。
9. 两组与数词有关的介词短语：⑴in+定冠词the+数词的复数形式，表示年代。
eg. in the 1870s或1870’s[读成]--- eighteen seventiesThis took place ________________(90年代)= _________________.⑵in+物主代词+数词的复数形式，表示某人的年龄段。
第14讲:数词之考点精讲表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。
表示数目多少的数词叫基数词；表示顺序的数词叫序数词。
一、基数词的用法(1) 基数词在句中主要用作主语、宾语、定语、表语、同位语，例如：Thirty of them are Party members.（主语）--- How many would you like？--- Three ，please．（作宾语）The nine boys are from Tianjing.（定语）Six plus four is ten.（表语）We four will go with you.（同位语）(2) 表示一个具体数字时，hundred, thousand, million一律不用复数；在表示一个不确定数字时则用复数。
例如：Our country has a population of 1,300 million people.There are three thousand students in our school.After the war, thousands of people became homeless.Maize is the most important food crop for millions of people in the world.They arrived in twos and threes．(3) 表示“……十”的数词的复数形式可用来表示人的岁数或年代，例如：He is in his early thirties．He died still in his forties．This took place in 1930s．(4) 表示时刻用基数词。
例如：We get up at six.The workers begin work at eight.表示“几点过几分”，用介词past,但须在半小时以内。
