中考英语复习课件专题四--数词.ppt

基数词变序数词的口诀 一二三，要死记；四后都加th； 五用f换ve，其后都加th; 六七同四首规律； 八少t,九去e, 然后再加th; 十和十一首规律;十二f换ve,然后再加th; 十三起，十九止，其后都加 th; 整十数有规律，先将y变为ie，然后再加th； 几十几，有规律，前半基数后半序，在用短横线连起； * * 一.基数词、序数词 二.数词的表示法 one hundred and twenty-nine eight nineteen nine twelve one twenty-one three one hundred and five six one hundred five forty four twenty two 序数词 基数词 序数词 基数词 一.基数词、序数词 first second third fourth fifth sixth eighth ninth twelfth twentieth twenty-first fortieth one hundredth one hundred and fifth one hundred and twenty-ninth nineteenth 二.基数词的读法 1、百位和十位间用 and 连接, 十位和个位间用 - 连接 three hundred and twenty-one 321 2、右往左数,三位一组,逗号隔开.依次是 thousand(千) million (百万) billion (十亿) four thousand three hundred and twenty-one seven million,six hundred and fifty four thousand three hundred and twenty-one 7,654,321 1,987,654,321 4321 4,321 one billion nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twenty-one 1. hundred thousand (表示具体数字) million billion 2. hundreds thousands (表示概数) millions billions 三.基数词的用法 数词 (several)+ + of some / many hundreds of 1. — If a = 3, b=4, what’s the answer to the problem, a+2ab+1=? — the answer is___. A. twenty eight B. twenty-eighth C. twenty-eight 2. In our school several __ students are able to search the Internet . A. hunderd of B. hunderds of C. hundred 3. Many __ sheep were killed in the accident. A. thousands of B. thousand C. thousands 4. There are over nine __ workers in the factory, but __ of young people hope to work in it. A. hundred; hundreds B. hundreds; hundreds C. hundreds; hundred ① 月日年 在2008年10月1日 四.数词的表示法 — 年月日 on Octorber the first, two thousand and eight 日 the + 序数词 月 （首字母大写） 月日与年之间用 ，分开 年 （两位两位读） on August the ninth in May, two thousand and ten 有日用 on 无日用in on Oct. 1st , 2008 ② 月日 在8月9日 ③ 月年 在2010年5