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: 一般在基数词后加th -ve结尾的改为-fth -ty结尾的改为-tieth 熟记特殊词 2.注: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, 使用序数词时一般加定冠词the. 如:Im in the third grade. 序数词作几分之几讲时,有复数形式。如:1/5one fifth ; 2/3 two thirds ; 4/7 four sevenths ; 1/2 a half ; 1/4a quarter ; 3/4 three quarters ; 50% fifty hundredths . 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 105Room one 0 five; Bus No.13Bus Number Thirteen; P.5Page Five; Tel.No.7658659Telephone 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: 1/2half, 半小时half an hour, 1.5小时one and a half hours或one hour and a half. |