1、数 词 1.数词的定义和分类 数词是表示数目多少和顺序的词。数词分为基数词和序数词。1.基数词（1）基数词的构成基数词基数词构成方法构成方法举例举例13-19个位数词加后缀-teenthirteen，fourteen，fifteen20-99整十位数个位数词加后缀-tytwenty,thirty,forty21-29整十位数词-个位数词seventy-one，eighty-eightteenager青少年基数词基数词构成方法构成方法举例举例百位表达法百位+and+十位+个位one hundred and seventy-eight，two hundred and three千位表达法几千+几百
2、+and+十位+个位one thousand two hundred and thirty-four基数词基数词构成法构成法举例举例千位以上表达法从后往前数，没三位用一个“，”第一个逗号表示thousand，第二个逗号表示million，第三个表示billion，然后一节一节用几百几十几的方法表示。18,657,421eighteen million，six hundred and fifty-seven thousand,four hundred and twenty-one（2）基数词需要注意以下几点：1.几十几的基数词，十位和个位间需要用连字符“-”连接。eighty-five85 2.
3、三位数的基数词，在百位和十位之间用and连接 three hundred and sixty-five365 3.基数词的复数形式。当基数词hundred，thousand，million，billion 前有具体数词或用several修饰时，必须用单数。two thousand students 2.序数词（1）序数词的构成序数词序数词构成方法构成方法1-3first 1st第一；second 2nd第二；third 3red第三4-19在相应的基数词后加-th构成，其中四个拼写有变化；fifth；ninth;twelfth整十位数将词尾y变i再加ethtwentieth;thirteth;
4、for贴合；fifitieth;sixtieth;seventieth;eightieth;ninetieth序数词序数词构成方法构成方法21以上的多位数词只将末位数变成序数词，前面的其他位数仍用基数词twenty-first，fifty-sixth，two thousand five hundred and eighty-fifth（2）基变序口诀 基变序，有规律，一二三，个别记；-th从四起，八加-h,九去-e,-ve要用-f替，以y结尾变-ie;几十几，几百几，首词不变尾变序（3）序数词需要注意：1.序数词前通常要用定冠词the the second is better than the
5、 first 说明：序数词用作副词时通常可以不加冠词 如：He came（the）first他先来 若序数词前用了物主代词或者名词所有格，则不能再用定冠词 如：his second wife，Toms first book 数词的基本用法（1）时间和日期的表达法时间表达法时间表达法构成方法构成方法直接表达法8:45 eight forty-five间接表达法小于等于30分钟用past:five past seven7:05，half past seven7:30大于30分钟用to:a quarter to eight7:45 日期表达 年份年份表达方法表达方法四位数的年份一般前两个数为一个单位
6、，后两个数为一个单位，一次按基数词读出1999nineteen ninty-nine，但2006two thousand and six三位数的年份可以按基数词读出，或第一个数字为一个单位，后两个数字为一个单位，按基数词读出；385 three hundred and eighty-five或three eighty-five两位数的年份直接按基数词读出；公元前59年fifty-nine B.C.;公元8年eight A.D.日期日期表达法表达法12个月January-December日 用序数词表达，书写时，序数词前的the和词尾-st,-nd,-rd,-th可省略，但是要念出来。如4月21
7、日，写作April 21（st）,读作the twenty-first of April(英），April twenty-first世纪21世纪，写成the 21sth century；读作the twenty-first century年月日按月份+日期的序数词+年份写出(美），年份前常用逗号，如1993年9月2日，September 2(nd),1993当月日完全用阿拉伯数字表示时，英国人日/月/年，美国月/日/年（2）交际活动中数词的常用法用法用法中文中文基数词基数词序数词序数词表示章节页数等第一章Chapter Onethe first chapter第三课Lesson Threeth
8、e third lesson练习五Exercise Fivethe fifth exercise第十五页Page fifteenthe fifteenth page第265页Page two six five较大数字一般用基数词用法用法中文中文基础词基础词序数词序数词表示房间门派电话号码第408室内Room four o eight康安街道76号seventy-six Kangan Street电话：2830526telephone number two eight three o five two six三路公共汽车Bus No.3 一.单选：1.-How much does it cost
9、 to build the school libary?-four yuan A.millon B millions C millions of D.million of 2.Dick,it is the time in days that youve made the same mistake.A two.three B second,three C two,third D second third 单选：1.-How much does it cost to build the school libary?-four yuan A.millon B millions C millions
10、of数以百万级 D.million of 2.Dick,it is the time in days that youve made the same mistake.A two.three B second,three C two,third D second third 3.The road is over meters long A.six hundred and fifty-two B.six hundreds and fifty-two C.six hundred,fifty-two D.six hundred，fifty and two 4.-Excuse me,where is
11、Mr.Greens offic?-Its on floor A.seven B.the seven C.the seventh D.seventh the ground floor第一层G 3.The road is over meters long A.six hundred and fifty-two B.six hundreds and fifty-two C.six hundred,fifty-two D.six hundred，fifty and two 4.-Excuse me,where is Mr.Greens offic?-Its on floor A.seven B.the
12、 seven C.the seventh 第八层 D.seventh the ground floor第一层G 5.Which comes chicken or egg?A.the first B.firstly C.first D.the firster 6.-What do you think of Harry Porter?-Oh,there are so many new words in chapter A.one B.first C.the first D.oneth 5.Which comes chicken or egg?A.the first B.firstly C.firs
13、t D.the firster 6.-What do you think of Harry Porter?-Oh,there are so many new words in chapter A.one B.first C.the first D.oneth 7.-Which lesson do you think is the most interesting?-.A.Lesson Five B.Lesson fifith C.Five lesson D.Five lesson 8.Kate lives in .Mine is A.the room five B.Room Five C.fi
14、ve room D.five rooms 7.-Which lesson do you think is the most interesting?-.A.Lesson Five B.Lesson fifith C.Five lesson D.Five lesson 8.Kate lives in .Mine is next to hers.A.the room five B.Room Five C.five room D.five rooms 9.-Excuse me.how can I get to Tiananmen Square?-You can take .A.the first b
15、us B.Bus NO.1 C.bus one D.the one bus 10.Today is his birthady and he is very happy A.twenty B.twentieeth C.the twentieth D.the twenty 9.-Excuse me.how can I get to Tiananmen Square?-You can take .A.the first bus B.Bus NO.1 C.bus one D.the one bus 10.Today is his birthady and he is very happy A.twen
16、ty B.twentieeth C.the twentieth D.the twenty 二.汉译英 1.18，567，424 2.78,053,003,000 3.两万 4.八十万 5.156 二.汉译英 1.18，567，424 eighteen million，six hundred and fifity-seven thousand four hundred andtwenty-four 2.78,053,002,000 seventy-eight billion，fifty-three million,and two thousand 3.两万20,000 twenty thousa
17、nd 4.八十万800,000 eight hundres thousand 5.156 one hundred and fifty-six 6.9:45 7.8:30 8.2010年 9.1949年10月1日 10.405年 6.9:45 a quarter to ten 7.8:30 half past eight 8.2010年 two thousand and ten 9.1949年10月1日 October 1st,1949 10.405年 four hundred and five A.D.11.公元前20年 12.21世纪 11.公元前20年 twenty B.C.12.21世纪 the 21st century 三.写出下列基数词相对应的序数词及简写形式 1.8 2.9 3 12 4.20 5.33 6.567 三.写出下列基数词相对应的序数词及简写形式 1.8 eighth,8th 2.9 ninth,9th 3 12 twelfth,12th 4.20 twentieth,20th 5.33 thirty-third,33rd 6.567 five hundred and sixty-fifth,565th
