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1、数 词,学习目标 一基数词和序数词的构成。二基数词的用法。三序数词的用法。,数词概述,1.表示数目多少或顺序先后的词叫数词。数词分为基数词和序数词。2.基数词表示数目或数量多少。序数词表示顺序和等级。,一 基数词和序数词的构成,1.one2.two3.three4.four5.five6.six7.seven8.eight9.nine10.ten,11.eleven12.twelve13.thirteen14.fourteen15.fifteen16.sixteen17.seventeen18.eighteen19.nineteen20.twenty,10.ten20.twenty30.thi
2、rty40.forty50.fifty60.sixty70.seventy80.eighty90.ninety,firstsecondthirdfourthfifthsixthseventheighthninthtenth,eleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwentieth,一二三,特殊记f 要把 ve 替八减 t,九去 e结尾 th 不忘记若想变为几十几,只变个位就可以。,基数词变为序数词:,二 基 数 词 考 点,1.有s没数字,有数字没s:hundred
3、,thousand,million,billion2.in his forties.In ones+年龄复数 in the 1930s.In the+年代复数3.时间的表示(1)2:25 two twenty-five(2)8:20 twenty past eight 6:50 ten to seven(3)a quarter=15 minutes a half=30 minutes 8:30 half past eight 8:15 a quarter past eight 7:45 a quarter to eight,4.数的读写(1)数的读法 1,987,654,321 one bil
4、lion,nine hundred and eighty-seven million,six hundred and fifty-four thousand,six hundred and twenty-one 1234 1001 1100 1034(2)数的写法 三位一逗,三 序 数 词 考 点,1.年份、日期的表示 日期用序数,年份用基数 1949.10.1 October 1st,1949 年份的读法:两位一组 1999 1900 1909 20082.分数的表示:(1)分子基,分母序;分子大于1,分母加s 2/5(2)a quarter=1/4 three quarters=3/4 a
5、 half=3.编号的表示 Lesson One=the first lesson Class Three=the third Class 结构:名词+基数词 或 the+序数词+名词4.序数词缩写 取后两位,基础练习 1.读出下列数字 79 999 103 1,302 1,987,654,321 第九 第四十 第五十二 2.写出下列数字.(1)two thousand six hundred and fifty-nine _(2)eighteen million two hundred and thirty thousand and sixty-eight _,2659,18,230,068
6、,3.数词表示编号Lesson One=the first lesson结构:名词+基数词 或 the+序数词+名词如:Page5=Room 21 4.表示年龄 a.表示十几岁用teens指从13岁到19岁。在某人十几岁时:in ones teens.b.表示“几十岁”;用 in ones+数词复数 in ones thirties 表示在某人三十几岁时,指从30岁到39岁。在他五十多岁时写作 c.18岁:eighteen years old d.一个十八岁的男孩:an 18-year-old boy=a boy of 18,in his fifties,the fifth page,the
7、twenty-first room,1.It is not rare in _ that people in _ fifties are going to university for further education.A.19 90s,theB.the 1990s,/C.1990s,their D.the 90s,their2.Jack is now in _.the three grade B.Grade Third C.Grade Three3.-Peter,how old is your father this year-_.And we just had a party for h
8、is _birthday last weekFortieth,forty B.Forty,fortyC.Forty,fortieth D.Fortieth,forthieth,D,C,C,综合演练,3._ of the land in that district _ covered with trees and grass.A.Two fifth,is B.Two fifth,areC.Two fifths,is D.Two fifths,are4.Five minus two_three.A.was B.are C.were D.Is,C,分数和百分数作主语时,关键是看其后的名词来决定其谓语
9、动词的数。该题中的是不可数名词,所以动词需用单数。,D,中考演练 选择题 1.-When was he born?-He was born _.A.in 1988 June 6 B.on June 6,in 1988 C.in June 6,1988 D.on June 6,1988 2.Athough I failed four times,my father encouraged me to try a _time.A.two B.four C.third D.fifth 3.The Olympics Games are held _.A.every four years B.every
10、four year C.every fourth years D.every four-year,D,A,D,4.The yellow river is _in China.It goes through many cities in China.A.the second longest river B.the longest scond river C.the scond longest rivers D.the longest scond rivers5.In our school more than _boys _like English.A.two fifths;dont B.two fives dont C.two fifths doesnt D.scond five doesnt 6.The war took place _.A.1720s B.1720s C.in the 1720s D.the 17207.I got a beatutiful bike on _birthday.I like it very much.A.fifteenth B.fifteen C.my fifteen D.my fifteenth,A,C,D,A,Thank you,