【#第一文档网# 导语】以下是®第一文档网的小编为您整理的《数词 高考英语语法重点归纳》，欢迎阅读！
四、数词 3、序数词：表示顺序的数词叫序数词。 1、 英语的序数词基本变法： (1) 一般在基数词后加th,(2)-ve结尾的改为-fth,(3)-ty结尾的改为-tieth,(4)熟记特殊词。 2、序数词如下： 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th ※first ※second ※third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth 13th 14th 15th 16th 17th 18th 19th thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth 20th 30th 40th 50th 60th 70th 80th 90th twentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth one undredth 21st 22nd 23rd 35th 101st twenty-first twenty-second twenty-third thirty-fifth one hundred and first nineteenth 100th 1000th→one thousandth, 1000000th →one millionth., 第703→the seven hundred and third, 第5480→the five thousand four hundred and eightieth. 3、注：(1)两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词。如：thirty-sixth, (2) 使用序数词时一般加定冠词the. 如：I’m in the third grade. (3) 序数词作“几分之几”讲时,有复数形式。如：1/5→one fifth ; 2/3→ two thirds ; 4/7→ four sevenths ; 1/2→ a half ; 1/4→a quarter ; 3/4→ three quarters ; 50%→ fifty hundredths ( fifty per cent). 4、数词的用法： 1、表示年份：2002: twenty thousand and two ; 1976 : nineteen seventy-six. 2、表示日期： 12月1日: Dec.1st或the first of December；2002年11月8日: Nov. 8th, 2002. 3、表示时刻： 5：15→ five fifteen或a quarter past five ; 8：30→ eight thirty或half past eight ; 10：45→ ten forty-five或a quarter to eleven. 4、表示编号：Room 105→Room one 0 five; Bus No.13→Bus Number Thirteen; P.5→Page Five; Tel.No.7658659→Telephone Number seven-six-five-eight-six-five-nine 5、小数的读法：5.7→ five point seven, 0.16 →zero point one six. 6、“半”的表达： 1/2→half, 半小时→half an hour, 1.5小时→one and a half hours或one hour and a half. 7、序数词前面加the时,表示顺序,加a/an时表示“再一、又一”。如：The third lesson is rather difficult.(第三课相当难)/ Shall we read the text a third time?(我们把课文读第三遍,好吗？) 本文来源：https://www.dywdw.cn/39d06584260c844769eae009581b6bd97e19bc5c.html
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2022-04-12
