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第二章 词 类,第三节 数 词,第二章 词 类第三节 数 词,知识梳理,一、数词的分类,知识梳理一、数词的分类,二、数词的构成,1. 112,的基数词与序数词的对应表,【,注,】,以上加粗的几个序数词比较特殊，请特别加以记忆。,二、数词的构成【注】以上加粗的几个序数词比较特殊，请特别加以,2. 1319,的基数词与序数词的对应表,这一组词的特点是：基数词都是以,teen,结尾，序数词都是在基数词后直接加,th,。,2. 1319 的基数词与序数词的对应表,3. 2090,的整十的基数词与序数词的对应表,这一组词的特点是：基数词都是以,ty,结尾，序数词都是将基数词末尾的,y,改为,ieth,。,3. 2090的整十的基数词与序数词的对应表,4.,几十几的表示方法,基数词由十位数词后面加上个位数词合成，中间加上连字符“,-”,；序数词则是在基数词的基础上，十位数不变，只将个位变为序数词即可。,如：,twenty-one(21)twenty-first(21st),，,ninety-five(95)ninety-fifth(95th),5.,三位以上的数词的表示方法,三位以上的基数词， 在百位和十位之间，一般要用连词,and,；序数词的表示则是在基数词的基础上，百位和十位数保持不变，只将个位变为序数词即可。,如：,one hundred and thirty-two(132)one,hundred and thirty-second(132nd),one thousand three hundred and forty(1,340),one thousand three hundred and fortieth(1340th),4. 几十几的表示方法,6.,几个大数字的表示方法,百：,hundred,千：,thousand,百万：,million,十亿：,billion,【,注,】,在使用基数词时，要特别注意,hundred,，,thousand,，,million,，,billion,等几个词的用法。若这些词前面用了基数词，则不论其后是否有,of,，都必须用单数形式,(,此时若带,of,则通常表示特定范围内的一部分,),；若泛指数百、数千、数百万等，则用,hundreds of,，,thousands of,，,millions of,等这样的结构。,如：,Two hundred of the students will plant trees this Saturday.,这周六这些学生中有,200,名学生将去植树。,Hundreds of people attended the concert.,成百上千的人们出席了音乐会。,Thousands upon thousands of English words come from foreign tongues.,成千上万的英语单词来自外来语。,6. 几个大数字的表示方法,7.,基数词变序数词的规律,基数词变序数词有一定的规律，口诀如下：,7. 基数词变序数词的规律,三、数词的用法,1.,表示数量的多少时，用基数词。,注意与后面的名词单复数形式一致，并注意谓语动词的变化。,如：,There is only one student in the classroom.,Five students are playing basketball.,2.,表示时间时，用基数词。,(1),表示几点钟用基数词加,oclock(,可以省略,),。如：,5,：,00,读作,five oclock,或,five,。,三、数词的用法,(2),表示几点过几分，有两种表达方式：第一种是简单地将时和分分别读出。第二种是以半点为分界线，在半点之前,(,包括半点,),用分钟,past,小时；半点之后，以差多少分到下一个时间点的方式表示，即,(60,分钟数,),to,(,小时数,1),。,如：,7,：,05,seven o five,或,five past seven,6,：,30,six thirty,或,half past six(half,表示半点,),8,：,15,eight fifteen,或,fifteen/a quarter past,eight(a quarter,表示一刻钟,),7,：,50,seven fifty,或,ten to eight,11,：,45,eleven forty-five,或,a quarter to twelve,3.,表示年份时，用基数词。,如：,1949,nineteen forty-nine,2015,two thousand and fifteen,(2)表示几点过几分，有两种表达方式：第一种是,4.,表示日期时，用序数词。,如：,10,月,1,日,October the first,或者,the first of October,2008,年,8,月,18,日,Aug.18th,2008,或,the 18th of August,，,2008,5.,表示年龄、身高、体重、物品价格等时，用基数词。,如：表示年龄：,Im 15 (years old).,表示身高：,Im 156 cm (tall).,表示体重：,Im 49 kg.,表示物品的价格：,How much is the meat,？,Its 20,yuan,a kilo.,4. 表示日期时，用序数词。,6.,表示数学运算时，用基数词。,如：,4,6,10,Four and / plus six is ten.,9,6,3,Nine minus six is three.,27,14 Two times seven is fourteen.,155,3 Fifteen divided by five is three.,7.,表示顺序时，用序数词。,如：,The first boy in the line is Mike.,She is the second in our class.,6. 表示数学运算时，用基数词。,8.,表示编号时，既可以用基数词，也可以用序数词。,如：,the first lesson,Lesson One,，,the eighth unit,Unit Eight,【,注,】,名词加基数词的形式中，名词和基数词的首字母都要大写。,9.,分数的表达，分子用基数词表示，分母用序数词表示，先读分子然后读分母，当分子大于,1,时，表示分母的序数词后面要加,s,。如：,1/3,one third,，,2/3 two thirds,8. 表示编号时，既可以用基数词，也可以用序数词。,考点精析,考点 数词的用法,【,例,】,单项填空。,(,)1. I am in,.,A. Class 2,B. Class 2nd,C. 2nd Class,(,)2.,people visited the park this morning.,A. Hundred of B. Hundreds of,C. Several hundreds of,考点精析考点 数词的用法,解析：,第,1,小题考查基数词和序数词的正确用法。在表示编号时，如果用名词加基数词表示，首字母要大写，如果用序数词名词表示，序数词前要加,the,。,C,选项前加上,the,才是正确的选项；第,2,小题考查基数词的复数形式的用法。“好几百”直接在名词,hundred,之后加,s,和,of,， 无需前缀,several.,答案：,1. A,2. B,解析：第1小题考查基数词和序数词的正确用法。在表示编号时,举一反三,1.,单项填空。,( ) (1)The reading room is on the,.,A. third floor,B. Floor 3rd,C. 3 floor,( ) (2)Today is,.,A. the first of May B. the first May C. May first,2.,用英语表达下列日期。,(1)6,月,1,日,(2) 10,月,3,日,(3) 4,月,2,日,(4) 7,月,10,日,(5)9,月,15,日,(6) 8,月,21,日,A,A,June 1st,October 3rd,April 2nd,September 15th,July 10th,August 21st,举一反三AAJune 1stOctober 3rdApril,过关检测,一、按要求写单词。,(,一,),基数词,1. 112,的基数词,(,特殊记忆,),1 _ 2 _,3 _ 4 _,5 _ 6 _,7 _ 8 _,9 _ 10 _,11 _ 12 _,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,过关检测一、按要求写单词。onetwothreefourfi,2. 1319,的基数词,(,都是以,teen,结尾,),13 _ 14 _,15 _ 16 _,17 _ 18 _,19 _,3.,整十的基数词,(,都是以,ty,结尾,),20 _ 30 _,40 _ 50 _,60 _ 70 _,80 _ 90 _,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety,nineteen,2. 1319的基数词(都是以teen结尾)thirtee,4.,非整十的两位数的基数词,21 _ 45 _,58 _ 96 _,(,二,),序数词,1. 13,的序数词及数字表示方法,第一,_ (_),第二,_ (_),第三,_ (_),twenty-one,forty-five,fifty-eight,ninety-six,first,1st,second,2nd,third,3rd,4. 非整十的两位数的基数词twenty-oneforty-,2. 419,的序数词及数字表示方法,(,除,5,、,9,、,12,，其余都是以基数词加,th,构成的,),第四,_ (_),第五,_ (_),第六,_ (_),第七,_ (_),第八,_ (_),第九,_ (_),第十,_ (_),第十一,_ (_),fourth,4th,fifth,5th,sixth,6th,seventh,7th,eighth,8th,ninth,9th,tenth,10th,eleventh,11th,2. 419的序数词及数字表示方法(除5、9、12，其余都,第十二,_ (_),第十三,_ (_),第十四,_ (_),第十五,_ (_),第十六,_ (_),第十七,_ (_),第十八,_ (_),第十九,_ (_),twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth,12th,13th,14th,15th,16th,17th,18th,19th,第十二 _ (_)twe,3.,整十的序数词及数字表示方法,(,都是把整十的基数词词尾的,y,改成,i,，然后加,eth),第二十,_ (_),第三十,_ (_),第四十,_ (_),第五十,_ (_),第六十,_ (_),第七十,_ (_),第八十,_ (_),第九十,_ (_),twentieth,20,thirtieth,30,fortieth,40,fiftieth,50,sixtieth,60,seventieth,70,eightieth,80,ninetieth,90,3. 整十的序数词及数字表示方法(都是把整十的基数词词尾的y,4.,其他的两位数的序数词，由基数词“几十几”变化而来，十位数不变，个位数上的基数词变成序数词，中间用连字符“,-”,连接,第二十一,_ (_),第三十二,_ (_),第四十三,_ (_),第五十四,_ (_),第八十九,_ (_),第九十六,_ (_),twenty-first,thirty-second,32nd,21st,forty-third,43rd,fifty-fourth,54th,eighty-ninth,89th,ninety-sixth,96th,4. 其他的两位数的序数词，由基数词“几十几”变化而来，十位,二、在横线上填写合适的数词，把下面的算术题补充完整。,seventeen+eight=_,2. sixty-_=ten,3. ninety+_=ninety-five,4. fourteen+one_,5.thirty-fourteen=_,6.eighteen-seven=_,7.three+eleven=_,8.nine+ten=_,9.five+_=forty-five,10.eight+twelve=_,twenty-five,fifty,five,fifteen,sixteen,eleven,fourteen,nineteen,forty,twenty,二、在横线上填写合适的数词，把下面的算术题补充完整。twen,三、单项填空。,( )1. Please turn to _.,A. Page 11 B. the 11st page C. page the 11th,( )2. There are _ in our classroom.,hundreds books B. some hundreds of books,C. hundreds of books,( )3. There are_ students in our school.,A. fourhundred and forty-five B. four hundred and forty-five,C. four hundreds and forty-five,( )4. May is _ of the year.,A. the fifth months B. the fifth month C. the five months,( )5. _ is Womens Day.,A. March the eighth B. March the eight C. Eight of March,A,C,B,B,A,三、单项填空。ACBBA,四、根据句意及首字母提示补全单词。,1. There are t_ months in a season.,2. There are s_ minutes in an hour.,3. Spring is the f_ season of the year.,4. September t_ is Teachers Day.,5. There are f_ seasons in a year.,6. The f_ day of the week is Thursday.,7. T_is the third day of the week.,8. My uncle is 30. My aunt is 2 years younger than him. So my aunt is t_ years old.,9. Nine and nine is e_.,10. Three t_ of the earth is land.,welve,ixty,irst,enth,our,ifth,wenty-eight,ighteen,uesday,enths,四、根据句意及首字母提示补全单词。welveixtyirst,五、看图写时间。,one oclock,five past ten,five oclock,ten to eleven,half past eight,a quarter past nine,五、看图写时间。one oclockfive past t,9,、有时候读书是一种巧妙地避开思考的方法。,2024/8/21,2024/8/21,Wednesday, August 21, 2024,10,、阅读一切好书如同和过去最杰出的人谈话。,2024/8/21,2024/8/21,2024/8/21,8/21/2024 1:03:29 AM,11,、越是没有本领的就越加自命不凡。,2024/8/21,2024/8/21,2024/8/21,Aug-24,21-Aug-24,12,、越是无能的人，越喜欢挑剔别人的错儿。,2024/8/21,2024/8/21,2024/8/21,Wednesday, August 21, 2024,13,、知人者智，自知者明。胜人者有力，自胜者强。,2024/8/21,2024/8/21,2024/8/21,2024/8/21,8/21/2024,14,、意志坚强的人能把世界放在手中像泥块一样任意揉捏。,21 八月 2024,2024/8/21,2024/8/21,2024/8/21,15,、最具挑战性的挑战莫过于提升自我。,八月 24,2024/8/21,2024/8/21,2024/8/21,8/21/2024,16,、业余生活要有意义，不要越轨。,2024/8/21,2024/8/21,21 August 2024,17,、一个人即使已登上顶峰，也仍要自强不息。,2024/8/21,2024/8/21,2024/8/21,2024/8/21,Thank You.,You made my day!,-,敢为天下先，勇争第一,9、有时候读书是一种巧妙地避开思考的方法。2023/8/30,
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