中考英语数词专题复习ppt课件.ppt

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1、 心存感激，永不放弃！即使是心存感激，永不放弃！即使是在最猛烈的风雨中，我们也要有抬在最猛烈的风雨中，我们也要有抬起头，直面前方的勇气。起头，直面前方的勇气。请相信：请相信： 任何一次苦难的经历，只要不任何一次苦难的经历，只要不是毁灭，就是财富！是毁灭，就是财富！ 教师寄语教师寄语数数词词基数词基数词 序数词序数词数量数量顺序顺序一一. 基数词的构成基数词的构成1）112, 独立成词。独立成词。 one two three four five six seven eight nine ten eleven twelve2）13-19, 由由39 + teen构成。构成。 14fourteen

2、16-sixteen 17-seventeen 19nineteen 特殊拼写特殊拼写: 13 thirteen 15-fifteen 18eighteen 3）2090, 以以-ty结尾。结尾。 20twenty 30-thirty 40forty 50fifty 80-eighty 60-sixty 70-seventy 90ninety 4）2199， 两位数，十位与个位之间有两位数，十位与个位之间有 “”。 21 twentyone 55 fiftyfive 99 ninetynine5）101999，三位数，百位与十位，三位数，百位与十位/个位之间加个位之间加and。 101 one

3、 hundred and one 840 eight hundred and forty 693 six hundred and ninety-three 29,43150076,thousandhundredmillionbillionand6) 1，000以上数目以上数目,从右向左每三位用从右向左每三位用“，” 分开分开,分别读为分别读为thousand , million, billion 基数词的构成基数词的构成二二.概数词的用法概数词的用法1、表示表示具体具体数目数目,hundred, thousand, million不用复数不用复数 表示表示不确定不确定数目数目,用用复数。复数。

4、即即hundreds of(数百数百), thousands of(数千数千), millions of(数百万数百万)+ 名词复数名词复数, 可以用可以用many/several修饰，但不能与具体数目连用。修饰，但不能与具体数目连用。 1) Our country has a population of 1,300 million people. 2) There are three thousand students in our school. 3) After the war, thousands of people became homeless. 4) Several / Many

5、 thousands of trees must be planted every year.1. Nine _ pounds a week? Thats very good. (04年河年河北北) A. hundred of B. hundreds of C. hundreds D. hundred2.How many teachers are there in your school? About four _. (2013广安广安) A. thousands of B. thousand C. thousands D. thousand of3.The earthquake in Yaa

6、n left _ people homeless. (2013济宁济宁) A. two thousands B. thousands of C. two thousands of D. two thousand of 4. “Food Safety” has become one of the hottest topics recently (2013宜宾宜宾) Yeah, it receives _ Internet hits(点击点击) a day. A. thousands B. thousand of C. thousands of D. ten thousands 三三.序数词的构成

7、序数词的构成1) 13, first, second, third 。2) 419, 相应基数词相应基数词+th, 特殊拼写特殊拼写:fifth, eighth, ninth, twelfth。3) 2090, y变成变成ie +th,如如twentieth。4) 2199, 只把个位的基数词变成序数词只把个位的基数词变成序数词 如如twenty-first。5) 序数词缩写序数词缩写-数字最后两字母数字最后两字母 如如1st, 2nd, 3rd ,4th基变序基变序,有规律有规律,一、二、三，特殊记，面目全非要注意，一、二、三，特殊记，面目全非要注意，加加th从从4起，起，八少八少“t”，九

8、去，九去“e”，“ve”要用要用“f”替，替，(five, twelve)见见“y”变成变成“i”和和“e”，词尾加上，词尾加上“th”，(twenty, thirty,ninety)若是遇到几十几，只变个位就可以。若是遇到几十几，只变个位就可以。序数词缩写记清楚序数词缩写记清楚,数字后跟两字母。数字后跟两字母。(序数词构成规律)(1)序数词作定语，前面要加序数词作定语，前面要加the； The first truck is carrying a food basket John lives on the fifteenth floor She is my first English teac

9、her.(2)有时加有时加a/an，“再一再一”，“又一又一” 的意思的意思Well have to do it a second time Shall I ask him a third time？ When I sat down，a fourth man rose to speakThey had a second child in 1988序数词的用法序数词的用法1/4 one-fourth a (one) quarter3/4 three-fourths three quarters 2/3 two-thirds1/2 a (one) half 半年半年 half a year 半小时

10、半小时 half an hour一年半一年半 one and a half years one year and a half四四.分数表示法分数表示法分子用基数词，分母用序数词。分子用基数词，分母用序数词。分子大于分子大于1时，分母加时，分母加-s。1.About _ students in our class can describe that place in English. (2004年上海）年上海） A. three-fifths B. three-fifth C. third-five 2._ of the students in our school _girls.(2013牡

11、牡丹江丹江) A.Two three, are B. Two thirds, is C. Two thirds, are D. Two, is3. Its said that _ of the water around the world _polluted. 13黄石黄石) two third; has B. two thirds; have C. two third; are D. two thirds; is4.What should we do now? (2013黄冈黄冈) Please turn to Page _ and look at the_ picture. A. Twel

12、ve; fifth B. Twelfth; fifth C. Twelve; five D. Twelfth; five五五.编号表示法编号表示法编号在编号在前前，名词在后，用，名词在后，用序序数词，前面有数词，前面有the编号在编号在后后，名词在前，用，名词在前，用基基数词，注意首字母数词，注意首字母大写大写房间号码和电话号码要一个一个分别读房间号码和电话号码要一个一个分别读The First LessonThe First Lesson（在句子中不大写）（在句子中不大写）Lesson One Lesson One the thirty-second pagePage 32 / Page T

13、hirty-twoRoom 305Room 305Bus No.12第一课第一课第第32页页第第305房间房间第第12路公共汽车路公共汽车1999 nineteen ninety-nine1999 nineteen ninety-nine two thousand and eight two thousand and eight19491949年年10 10月月1 1日日 读作读作: : October (the) first, nineteen forty-nine (月月-日，年日，年) the first of October, nineteen forty-nine（日（日-月，年）月

14、，年）写作写作: October 1st,1999(日用缩写，月日用缩写，月-日日-年年) October 1, 1999 (日用数字日用数字) 1st October,1999日日-月，年月，年六六.年份、日期表达法年份、日期表达法年年用用基数词基数词表示表示,两位一读两位一读,介词用介词用in日日用用序数词序数词表示表示,介词用介词用on 表示表示“在在世纪世纪”, 用序数词。用序数词。 在在20世纪世纪 写作：写作：in 20th century 读作：读作：in the twentieth century 七七.其它数词知识：其它数词知识：1、 “几十几十”的复数形式可以表示：的复数形

15、式可以表示： 几十多岁几十多岁 - in + ones + 数词复数数词复数 年年 代代 - in + the +数词复数数词复数 1) He died in his forties四十多岁四十多岁 2) In the nineties, most people go to work by bike. 90年代年代2、“基数词基数词+名词名词” 的的合成形容词合成形容词作定语，作定语， 中间有连字符中间有连字符“”,当中的名词用当中的名词用单数单数。 a 3 year old girl a seven-day holiday 3、表计量、表计量- “基数词基数词+度量单位度量单位+形容词形容词

16、” The classroom is 7 meters long, 6 meters wide and 3 meters high. 4、表示时刻、表示时刻 (介词用介词用at)1)顺读法顺读法-先时后分先时后分, “几点几分几点几分” 9:30 nine thirty 6:21 six twenty-one 3) 15分钟：分钟：a quarter 30分钟：分钟：a half 9:15 a quarter past nine 12:30 half past twelve2)逆读法逆读法-先分后时先分后时 表示表示“几点几点过过几分几分”，半小时以内，介词用，半小时以内，介词用past 分钟

17、数分钟数+past +钟点数钟点数 10:10 ten past ten 8:20 twenty past eight表示表示“几点几点差差几分几分”，半小时以上，介词用，半小时以上，介词用to 60减原分钟减原分钟+ to + (下一个下一个)钟点数钟点数 9:50 ten to ten 7:40 twenty to eight1. 26 About _of the students in Grade Nine this year were born in the_. (2012贵州铜仁贵州铜仁) three five; 1996.B. three fifths; 1990s C. thir

18、d fifth; 1997. D. third fifths; 1990s2. On February 25, 2013, Li An, a Chinese director, won the best director again. It is his time to win an “Oscar”. (2013东营东营) A. first B. three C. twice D. second3. Can you imagine what life will be like in _ time? (2013阜康阜康) A. 20 years B. 20 years C. 20-years D

19、. 20-year4. This tall building has _ floors. And Tony lives on the _ floor. (2013贺州贺州) A. twelve; twelve B. twelfth; twelfth C. twelfth; twelve D. twelve; twelfth5. Please turn to page _ and look at the _ picture in this unit. (2012山东山东) twentieth; one B. twenty; one C. twentieth; first D. twenty; f

20、irst6. When did you start to collect stamps?( 13丹东丹东) I got my _ stamp when I was _ years old. A. one, seven B. one, seventh C. first, seventh D. first, seven7.We have two ears and one mouth so that we can listen _ we speak. A. as twice much asB. twice an much as C. as much as twiceD. as much twice as Summary(小结小结)1.基数词的构成（基数词的构成（6点）点）2.序数词的构成（序数词的构成（5点，记歌谣）点，记歌谣）3.序数词的用法序数词的用法(加加the, a/an)4.概数词的用法概数词的用法(hundred, thousand,million、岁数与、岁数与 年代、年代、“基基名名”、计量、时刻）、计量、时刻）5.分数表示法分数表示法(分子分子:基数基数 分母分母:序数序数)6.编号表示法编号表示法(可用序数词可用序数词/基数词基数词,注意加注意加the或大写或大写)7.年份、日期、的表达法年份、日期、的表达法(年年:基数基数 日、世纪日、世纪:序数序数)