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1、初中英语语法初中英语语法数词（数词（1）一、数词的构成一、数词的构成基数词基数词序数词序数词112有各自独立的形式。有各自独立的形式。13-19都是相对应都是相对应39加上加上teen构成，特殊构成，特殊拼写的词有拼写的词有thirteen, fifteen, eighteen。2090都以都以-ty结尾，特殊拼写的有结尾，特殊拼写的有twenty, thirty,forty, eighty。2199,整数十位数各位数，中间有整数十位数各位数，中间有“”。百位数，由百位数百位数，由百位数and+两位数组成。两位数组成。13分别为分别为first , second,third 。419都是在后面
2、加上都是在后面加上th ,特殊的有特殊的有fifth , eighth, ninth , twelfth 。2090把把y变成变成ie然后加然后加th,如如twentieth。2199的序数词变后面的各位数。的序数词变后面的各位数。序数词可以用缩写，如序数词可以用缩写，如1st, 2nd, 3rd ,4th二二. .基数词的读法基数词的读法1 1、百位和十位间用、百位和十位间用 and 连接连接, , 十位和个位间用十位和个位间用 - 连接连接three hundred and twenty-one3212 2、右往左数、右往左数, ,三位一组三位一组, ,逗号隔开逗号隔开. .依次是依次是
3、thousand(千千) million (百万百万) billion (十亿十亿)four thousand three hundred and twenty-oneseven million,six hundred and fifty four thousand three hundred and twenty-one7,654,3211,987,654,32143214,321one billion nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twe
4、nty-one1. hundred thousand (表示确数表示确数) million billion2. hundreds thousands (表示概数表示概数) millions billions三三. .基数词的用法基数词的用法数词数词( (several)+)+ ofsome / many hundreds of1. If a = 3, b=4, whats the answer to the problem, a+2ab+1=? the answer is_. A. twenty eight B. twenty-eighth C. twenty-eight2. In our s
5、chool several _ students are able to search the Internet . A. hunderd of B. hunderds of C. hundred3. Many _ sheep were killed in the accident. A. thousands of B. thousand C. thousands4. There are over nine _ workers in the factory, but _ of young people hope to work in it. A. hundred; hundreds B. hu
6、ndreds; hundreds C. hundreds; hundred 月日年月日年 在在2008年年10月月1日日四四. .数词的表示法数词的表示法 年月日年月日on Octorber the first, two thousand and eight日日the + 序数词序数词月月（首字母大写）（首字母大写）月日与年之间月日与年之间用用 ，分开分开年年（两位两位读）（两位两位读）on August the ninthin May, two thousand and ten有日用有日用 on 无日用无日用inon Oct. 1st , 2008 月日月日 在在8月月9日日 月年月年 在在
7、2010年年5月月1. The accident happened on_. A. April 5, 2001 B. 2001, April 5 C. April 2001, 52. I was born _. A. in March 8, 1993 B. on July 9, 1994 C. on May, 199520世纪90年代in the 1990s在他50多岁时in his fifties四四. .数词的表示法数词的表示法 年代世纪年代世纪in thein ones + 整十基数词复数在某人几十岁时nineteen nineties1. There will be more chan
8、ces in _ century than in _ century. A. twenty-one, twenty B. twenty-first, twentieth C. the twenty-first, the twentieth2. The city changed a lot _. A. in 1980s B. in the 1980s C. in the 19803. He graduated in _ of _ century. A. the sixtieth; twenty B. sixty; the twentieth C. the sixties; the twentieth4. He got the prize _. A. in his fifties B. in fifties C. in his fifty
