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1、数词Numerals数词定义英语数词表示数目或顺序，可分为基数词和序数词。基数词表示数量，序数词表示顺序。序数词与定冠词the连用。基数词序数词缩写基数词序数词缩写onefirst1stthirteenthirteenth13thtwosecond2ndfifteenfifteenth15ththreethird3rdeighteeneighteenth18thfourfourth4thnineteennineteenth19thfivefifth5thtwentytwentieth20thsixsixth6thtwenty-onetwenty-first21th
2、sevenseventh7thfortyfortieth40theighteighth8thfiftyfiftieth50thnineninth9theightyeightieth80thtententh10thninetyninetieth90theleveneleventh11thhundredhundredth100thtwelvetwelfth12th一、基数词与序数词的对比序数词构成规律基变序，有规律，一二三，特殊记，面目全非要注意，加th从4起，八少t,九去e,ve要用f替，见y变成i和e,词尾再加th,若是遇到几十几，只变个位就可以。序数词缩写记清楚
3、，数字后跟两字母。Attention!综上所述，序数词最大的特点是比基数词多了个尾巴“-th”。Exercises基数词one＿threefourfive＿seveneight序数词＿second＿fourth＿sixthseventheighth基数词nineteneleventwelvethirteentwenty-one序数词twosixfirstthirdfifthninthtentheleventhtwelfththirteenthtwenty-first二、数词的其他特点1、601-sixhundredandonesixhundredandsixth7
4、55-(hundredsof,thousandsof,millionsof…)2、尤其要注意在英语中没有“万”与“亿”这两个单位，“万”用“十个千”，即tenthousand表示，“亿”用“100个百万”，即100million表示；1000以上数目，从右向左每三位用“，”分开，分别为千thousand,百万million,十亿billion.E.g.324,768,0415,437,890,324三、年份、日期表达法1、1999-nineteenninety-nine.2013-2、8月23日-August23rd读为Augustthetwenty-third或
5、thetwenty-thirdofAugust.3.2013年4月2日：April2nd,2013NameBirthdaymakeacard:1.Septemberis＿monthofayear.A.nineB.ninthC.theninthD.eighth2.Todayismyfifteenthbirthday,soI’m＿yearsold.A.fifteenB.fourC.fifteenthD.thefifteen3.Hewrotehis＿novelwhenhewas＿.A.five;fiftiesB.fiftieth;fiftyC.fifth;fiftiet
6、h4.Johnliveson＿floor,buthedoesn’tusealifttogoupanddown.A.nineB.theninthC.ninthD.aninthcABB5.Ifyouarenotfeelingwell,youcancallthehospitalat＿.A.onehundredandtenB.onehundredandfourteenC.onehundredandnineteenD.onehundredandtwenty6.MissLiuwasbornon＿.A.1987,October31B.October,1987,31C.Octob
7、er31,1987D.1987,31OctoberDCsummary一、基数词与序数词的对比。二、数词的其他特点。三、年份、日期表达法Homework完成《中考先锋》实战演练场26第5、8、12、14题。Twoheadsare betterthanone.三个臭皮匠,赛过诸葛亮Thankyou!
