中考英语复习专题四数词PPT课件

1、一一. .基数词、序数词基数词、序数词二二. .数词的表示法数词的表示法第1页/共23页基数词基数词序数词序数词基数词基数词序数词序数词onetwelvetwotwentythreetwenty-onefourfortyfiveone hundredsixone hundred and fiveeightone hundred and twenty-nineninenineteen一一. .基数词、序数词基数词、序数词firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-firstfortiethone hundre

2、dthone hundred and fifthone hundred and twenty-ninthnineteenth第2页/共23页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；第3页/共23页二二. .基数词的读法基数词的读法1 1、百位和十位间用 and 连接, , 十位和个位间用 - 连接three hundred an

3、d twenty-one3212 2、右往左数, ,三位一组, ,逗号隔开. .依次是 thousand(千) million (百万) billion (十亿)第4页/共23页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 hundre

4、d and fifty-four thousand three hundred and twenty-one第5页/共23页1. hundred thousand (表示表示具体具体数字数字) million billion2. hundreds thousands (表示表示概数概数) millions billions三三. .基数词的用法基数词的用法数词( (several)+)+ ofsome / many hundreds of第6页/共23页1. If a = 3, b=4, whats the answer to the problem, a+2ab+1=? the answer

5、 is_. A. twenty eight B. twenty-eighth C. twenty-eight2. In our school several _ students are able to search the Internet . A. hunderd of B. hunderds of C. hundred第7页/共23页3. Many _ sheep were killed in the accident. A. thousands of B. thousand C. thousands4. There are over nine _ workers in the fact

6、ory, but _ of young people hope to work in it. A. hundred; hundreds B. hundreds; hundreds C. hundreds; hundred第8页/共23页 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 Ma

7、y, two thousand and ten有日用有日用 onon 无日用无日用ininon Oct. 1st , 2008 月日 在8月月9日日 月年 在2010年年5月月第9页/共23页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, 1995第10页/共23页20世纪90年代in the 1990s/ in the 1990s在他50多岁时in

8、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 nineties第11页/共23页1. There will be more chances 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

9、 the 1980第12页/共23页3. 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第13页/共23页时间类型时间类型表示法表示法例例读法读法整点整点基数词（基数词（+ oclock) 1:0030分钟分钟分钟分钟 + past +小时小时 2:10= 30 分钟分钟half + p

10、ast + 小时小时3:3030分钟分钟（60-分钟）分钟） + to +（小时（小时 + 1）4:40分钟逢分钟逢15即即 一刻钟一刻钟a quarter5:156:45简化法简化法按顺序读基数词按顺序读基数词7:50one oclockten past twohalf past threetwenty to fivea quarter past fivea quarter to sevenseven fifty表示在几点钟用介词表示在几点钟用介词 atat四四. .数词的表示法数词的表示法 时间时间第14页/共23页1. Its already 7:40 now. When will th

11、e film start? _. We still have five minutes. A. A quarter to seven B. Seven past forty-five C. A quarter to eight第15页/共23页1 15 5分子分子 基数词基数词分母分母 序数词序数词one fifthone fifth2 27 7分子分子 1 1分母分母 + s+ stwo seventhtwo sevenths s1 14 4分子分子 a a分母分母 quarterquartera quartera quarter3 34 4three quarterthree quarte

12、rs s1 12 2a halfa half四四. .数词的表示法数词的表示法 分数分数第16页/共23页1. _ of the students _ boys in Class A. Two three; are B. Two thirds; are C. Two thirds; is2. _ of her money _ spent on clothes. A. Two three; are B. Two thirds; is C. Two third; is3. _ the teachers in our school is about one hundred, and _ of the

13、m are women teachers. A. The number of; two third B. The number of ; two thirds C. A number of; two thirds第17页/共23页一个半小时一个半小时两个半小时两个半小时 two two andand a half hour a half hours s= two hour= two hours s andand a half a half one one andand a half hour a half hours s= one hour = one hour andand a half a

14、 half四四. .数词的表示法数词的表示法 半的表示法半的表示法1. The boy always stays there for _. A. one and half hour B. one and a half hour C. one and a half hours2. The old man drank_ beer. A. two bottles and a half B. two and a half bottle C. two bottle and a half第18页/共23页一般编码用一般编码用 名词名词 + + 基数词基数词207207房房 三年级一班三年级一班第五部分第五

15、部分第一课第一课3 3 号汽车号汽车第一中学第一中学Room 207 Room 207 Class one Grade threeClass one Grade threepart five = the fifth partpart five = the fifth partlesson one = the first lesson lesson one = the first lesson Bus No.3 =Bus No.3 = the No.3 busthe No.3 busNo. 1 Middle SchoolNo. 1 Middle School四四. .数词的表示法数词的表示法 编号编号第19页/共23页 The winner is _. He is an _ boy . A. eight-year-old; eight years old B. eight years old; eight-year-old C. eight-years old; eight-year-old He came to China