2016年人教版九年级英语专题复习之数词ppt课件.ppt

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1、数词数词-就是表示事物的数量就是表示事物的数量和顺序的词和顺序的词, ,分为基数词和序分为基数词和序数词两种。数词两种。数数词词基数词基数词序数词序数词表示事物的数量表示事物的数量表示事物的顺序表示事物的顺序(1)1-12分别由从分别由从one到到twelve12个个各不相同的词表示。各不相同的词表示。0 zero 1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve 基数词基数词构成方法如下：构成方法如下：13 thirteen 14 fourteen 15 fift

2、een 16 sixteen 17seventeen 18 eighteen 19 nineteen(2)13-19均以后缀均以后缀-teen结尾。结尾。20 twenty 30 thirty 40 forty 50 fifty 60 sixty 70 seventy 80 eighty 90 ninety (3)20-90的整十数词均以后缀的整十数词均以后缀-ty结结尾。尾。表示表示“几十几几十几”时时, 个位和十位之个位和十位之间需加连词符间需加连词符, 如如: twenty-one, thirty-two, forty-three.百位和十位百位和十位(若无十位则和个位若无十位则和个位)

3、之间用之间用and连接连接,十位和个位间用十位和个位间用“-” 连接。连接。156 one hundred and fifty-six;810 eight hundred and ten 204 two hundred and four;(4)三位数数词三位数数词:基数词基数词+hundred thousand million表示表示具体具体数字数字表示具体、准确的数目时表示具体、准确的数目时, hundred, thousand, million等词等词后不能加后不能加-s,如如: five hundred, six thousand, seven million 等。等。hundredst

4、housandsmillions+of表示表示概数概数当当hundred, thousand等数词与等数词与of 连用连用, 表示不具体、不准确的数目表示不具体、不准确的数目时时, 词尾须加词尾须加-s。如。如: thousands of students, millions of trees.a few后常接后常接 hundred;many后常接后常接hundreds of;several后常接后常接hundred或或hundreds of。a few hundred men几百人几百人 many hundreds of men几百人几百人 1. If a = 3, b=4, whats t

5、he answer to the problem, a+2ab+1=? The answer is _. A. twenty eight B. twenty-eighth C. twenty-eight2. In our school several _ students are able to search the Internet. A. hundred of B. hundreds of C. hundredsCB3. Many _ sheep were killed in the accident. A. thousands of B. thousand C. thousands4.

6、There are over nine _ workers in the factory, but _ of young people hope to work in it. A. hundred; hundreds B. hundreds; hundreds C. hundreds; hundredAA序数词序数词1 = one 1st = first 2 = two 2nd = second 3 = three 3rd = third 4 = four 4th = fourth 5 = five 5th = fifth 6 = six 6th = sixth 7 = seven 7th =

7、 seventh 8 = eight 8th = eighth 9 = nine 9th = ninth 10 = ten 10th = tenth11 = eleven 11th = eleventh 12 = twelve 12th = twelfth 13 = thirteen 13th = thirteenth 14 = fourteen 14th =fourteenth 15 = fifteen 15th = fifteenth 16 = sixteen 16th =sixteenth 17 = seventeen 17th = seventeenth 18 = eighteen 1

8、8th =eighteenth 19 = nineteen 19th =nineteenth 20 = twenty 20th = twentieth 21 = twenty-one 21st = twenty-first 22 = twenty-two 22nd = twenty-second序数词序数词(1).序数词除了序数词除了first (第一第一)、second (第二第二)、third (第三第三) 特殊外特殊外,其余的其余的都是在基数词上加词尾都是在基数词上加词尾-th构成。构成。 注注意意fifth, eighth, ninth, twelfth这几这几个词。个词。基数词基数词

9、 onetwothree序数词序数词 firstsecond third基数词基数词 fiveeightninetwelve序数词序数词 fiftheighthninthtwelfth(2)从第二十至第九十以从第二十至第九十以-ty 结尾结尾的表示的表示“几十几十”的基数词的基数词( (十位整十位整数的序数词数的序数词) ) ,先变先变y为为ie,再加再加“-th”构成。构成。twentytwentieth; thirtythirtiethforty fifty sixty seventy eighty ninety (3)表示表示“第几十几第几十几”时，十位数时，十位数的的“几十几十”仍用基

10、数词，只把处仍用基数词，只把处位部分变成序数词。位部分变成序数词。thirty-onethirty-first 第第31forty-twoforty-second; fifty-sixth; seventy-third; ninety-ninth(5)序数词的缩写形式序数词的缩写形式有时有时, 序数词可以用缩写形式来表示序数词可以用缩写形式来表示。序序数词的缩写形式数词的缩写形式, 由由阿拉伯数字加序数词阿拉伯数字加序数词的最后两个字母的最后两个字母构成构成。主要缩写形式有。主要缩写形式有。first1st; second2nd; third3rd; fourth4th; sixth6th;

11、twentieth20th; twenty-third23rd其中其中1st, 2nd, 3rd为特殊形式为特殊形式, 其它的都其它的都是阿拉伯数字后加上是阿拉伯数字后加上th。注注: 序数词前通常要加定冠词序数词前通常要加定冠词 the。如果名词前。如果名词前有代词（有代词（my/her/this/that）则不加）则不加the.Well go over it a second time.Weve tried it three times. Must we try it a fourth time?The Second World War broke out in 1939.注注: 序数词前

12、出现不定冠词序数词前出现不定冠词a或或an时时,则表示则表示“再再”, “又又”。(=another)Two days isnt enough for me to finish the work. I need _ day. (2008宁波市鄞宁波市鄞yin州州)A. a third B. the third C. the other D. otherAIn order to make it clear, I must go up to _ second floor and ask him _ second time. (2005呼和浩特市呼和浩特市)A. the; a B. the; the

13、C. a; the D. a; aA分数的表示法分数的表示法:分子用基数词分子用基数词,分母用序数词。分分母用序数词。分子大于子大于1时时,分母用复数分母用复数(+s)。基数词基数词序数词序数词数词的表示法数词的表示法 分数分数15分子分子 基数词基数词分母分母 序数词序数词one fifth27分子分子 1分母分母 + stwo sevenths14分子分子 a分母分母 quartera fourth / one fourth / a quarter / one quarter34three fourthsthree quarters12a second / a halfAbout _ of

14、 the workers in the factory were born in the _. (2008无锡市无锡市;2009兰州市兰州市)A. two-thirds; 1970 B. two-thirds; 1970sC. two-third; 1970 D. two-third; 1970sB二、时刻表示法二、时刻表示法时刻通常用基数词来读时刻通常用基数词来读顺序法顺序法:先说时钟数先说时钟数, 后说分钟数。后说分钟数。 8:45(=eight forty-five)10:05(=ten five)6:30= six thirty10:25 = ten twenty-five14:05

15、= fourteen o five16:15 = sixteen fifteen18:30 = eighteen thirty23:55 = twenty-three fifty-five注意注意: :表示表示“整点整点”时时, ,在基数词在基数词后加后加oclock: 9 oclock几点过几分几点过几分:分钟数分钟数30分钟时分钟时,用用“分钟数分钟数+past+时钟数时钟数”；6:05five past six 8:15a quarter past eight 9:25twenty-five past nine 7:30half past seven 反序法反序法: 先说分钟数先说分钟数

16、, 后说时钟数。后说时钟数。6:20 / 7:25 / 10:15 / 9:10 几点差几分几点差几分:分钟数分钟数30 时时,用用“到下一个时钟所到下一个时钟所差的分钟数差的分钟数+to+下一个时钟数下一个时钟数”。 7:35twenty-five to eight 11:40twenty to twelve 8:50ten to nine 6:55 9:43 4:51 Its already 7:40 now. When will the film start?_. We still have five minutes. A. A quarter to seven B. Seven pas

17、t forty-five C. A quarter to eightC三、三、年代年代用用 “the+基数词表示的世纪基数词表示的世纪+十位整数的复数形式表示的年代十位整数的复数形式表示的年代”构成。构成。在二十世纪三十年代在二十世纪三十年代in the 1930s (in the nineteen thirties)在十九世纪六十年代在十九世纪六十年代in the 1860s (in the eighteen sixties) C. the twenty-first, the twentieth 2. The city changed a lot _. A. in 1980s B. in t

18、he 1980s C. in the 1980B“in ones + 整十位基数词的复数整十位基数词的复数”是一种习是一种习惯表达法惯表达法, 用以表示约略年龄用以表示约略年龄, 意为意为“在某人在某人几十几岁的时候几十几岁的时候”。使用该结构时。使用该结构时, 必须注必须注意数词用复数形式意数词用复数形式, 其前是形容词性物其前是形容词性物主代词主代词, 最前面是介词最前面是介词in。in ones forties在某人四十多岁时在某人四十多岁时My mother is in her fifties.When Mr Liu was _, he became a famous professo

19、r.A. on his forties B. in the fortiesC. in the forty D. in his fortiesMy father began to learn Russian when he was over fifty. My father began to learn Russian _ _ _. in his fiftiesD一个半小时一个半小时 two and a half hours= two hours and a half one and a half hours= an hour and a half数词的表示法数词的表示法“半半”的表示法的表示法

20、两个半小时两个半小时一年半一年半两年半两年半 two and a half years= two years and a half one and a half years= a year and a half1. The boy always stays there for _. A. one and half hour B. one and a half hour C. one and a half hours2. The old man drank _ beer.A. two bottles and a half B. two and a half bottleC. two bottle

21、 and a halfCA数词的表示法数词的表示法 “一两个一两个”的表示法的表示法“a / an + 单名单名 + or two” 或或 “one or two + 复名复名”。Dont worry. Youll be all right in a day or two.I can only stay here for one or two days. I can finish the work in a week or two.“一两个一两个”习惯上用习惯上用注意注意: a / an和和one不可调换。不可调换。三、年月表示法三、年月表示法the seventeenth century 十

22、七世纪十七世纪the 1600s 十七世纪十七世纪the twentieth century二十世纪二十世纪the 1900s 二十世纪二十世纪the 1950s 二十世纪五十年代二十世纪五十年代1. 世纪世纪可以用可以用 “the+序数词序数词+ century”表示表示,也可以用也可以用 “the+百位进数加百位进数加s”表表示示 1. There will be more chances in _ century than in _ century. A. twenty-one, twenty B. twenty-first, twentieth C. the twenty-first,

23、 the twentiethC 3. He graduated in _ of _ century. A. the sixtieth; twenty B. sixty; the twentieth C. the sixties; the twentiethin the sixties在六十年代在六十年代in his sixties在他六十几岁的时候在他六十几岁的时候C“in ones + 整十位基数词的复数形整十位基数词的复数形式式”, 表示表示“在某人几十几岁的时在某人几十几岁的时候候”。4. He got the prize _. A. in his fifties B. in fifti

24、es C. in his fiftyAA. 年份用基数词表示年份用基数词表示, 一般写为阿拉伯数字。一般写为阿拉伯数字。 是是四位数字时四位数字时, 各分成二位来读。各分成二位来读。1949 读作读作: nineteen forty-nine1800 eighteen hundred253two hundred and fifty-three1902 nineteen hundred and two或或 nineteen o two数词的表示法数词的表示法 年份年份日期日期: : the加序数词表示加序数词表示National Day is on October 1(st). (读作读作 Oc

25、tober the first)National Day is on the 1st of October 月日月日,年年数词的表示法数词的表示法 年月日年月日on October the first, two thousand and eight日日the + 序数词序数词月月(首字母大写首字母大写)月日与年之间月日与年之间用逗号分开用逗号分开年年（两位两位读）（两位两位读）写作写作on August 9(th)写作写作in May, 2010有日用有日用 on; 无日用无日用in在在2008年年10月月1日日写作写作on October 1(st), 2008 月日月日 在在8月月9日日

26、月年月年 在在2010年年5月月在具体的某一天的早晨、上午、下午、晚上、在具体的某一天的早晨、上午、下午、晚上、夜里用介词夜里用介词on。morning, afternoon, evening等词前用介词等词前用介词in: in the morning / afternoon / evening。但是但是, 当这些词前或后有定语时当这些词前或后有定语时, in应改为应改为on。He was born on the night of December 25th, 1992.He suddenly came back on a rainy night. 1. The accident happen

27、ed on _. A. April 5, 2001 B. 2001, April 5 C. April 2001, 52. I was born _. A. in March 8, 1993 B. on July 9, 1994 C. on May, 1995AB80 %百分数百分数(%)基数词基数词+percenteighty percenthalf / (百百)分数分数 + of + 可数名词复数可数名词复数 谓语动词用复数谓语动词用复数half / (百百)分数分数 + of + 不可数名词不可数名词谓语动词用单数谓语动词用单数Three fourths of the apples _

28、bad.Three fourths of water_ bad.areis3.78读作读作three point seven eight小数小数小数点前按整数方式读小数点前按整数方式读,小数小数点后一位一位地读。点后一位一位地读。12. 6789读作读作twelve point six seven eight nine数词的表示法数词的表示法 倍数的表达法倍数的表达法一倍一倍once, 两倍两倍twice, 三倍三倍three times (三倍或以上用基数词三倍或以上用基数词times)This box is five times as big as that one.=This box i

29、s four times bigger than that one.Asia is four times as large as Europe.亚洲是欧洲的四倍大。亚洲是欧洲的四倍大。(比欧洲大三倍。比欧洲大三倍。) A + be + 倍数倍数 + as +原级原级(big, long, wide,) + as +B. A是是B的的 倍倍。表示倍数的句型表示倍数的句型 A + be + 倍数倍数 + 比较级比较级(bigger, higher, longer, wider, )+ than +B. A比比B 大大(长长) 倍。倍。This room is twice bigger than t

30、hat one.这个房间比那个这个房间比那个(房间房间)大两倍。大两倍。This dictionary is four times thicker than that book.这本词典比那本书厚四倍。这本词典比那本书厚四倍。表示倍数的句型表示倍数的句型Tom is a 10-year-old boy. “基数词基数词-名词名词(-形容词形容词)”结构结构:这个结构只能放到名词前作定语这个结构只能放到名词前作定语; 中间的名词只能用单数。中间的名词只能用单数。Tom is 10 years old.注意注意: 在在be动词后动词后用作表语时用作表语时, ,不能不能用连词符用连词符, ,名词有复

31、数。名词有复数。1. a 6-month-old baby 一个一个6个月大的婴儿个月大的婴儿2. a 100-year-old tree一棵一棵100年的老树年的老树3. a 6,300-kilometer-long river 一条一条6,300千米长的河千米长的河4. a 20-meter-deep lake 一个二十米深的湖泊一个二十米深的湖泊5. _ 18-meter-wide road 一条一条18米宽的公路米宽的公路6. _ 1-hour-long walk 一段要步行一个小时的路程一段要步行一个小时的路程7. _ 800-word composition 一篇一篇800字的作文

32、字的作文 anaanOur school is only _ walk from here. (2002南京市南京市)A. five-minute B. five minutes C. five minutes D. five minutesEvery morning Mr Smith takes a _ to his office. (2001甘肃甘肃)A. 20 minutes walk B. 20 minutes walkC. 20-minutes walk D. 20-minute walk D比较比较It is ten minutes walk.与与It is a ten-minut

33、e walk.DIt is _ walk from here to my school.A. two-hours B. two hour C. two-hour D. a two-hourHe had a _ visit to Canada last month. (2002深圳深圳)A. ten days B. ten-dayC. ten-days D. ten dayBD特特殊殊结结构构 another+数词数词+复数名词复数名词(=数词数词+more+复数名词复数名词)another或或more与数词结合与数词结合,意为意为“另另, 还还”, 表示在原有数量的基础上又多出的数量。表示在原

34、有数量的基础上又多出的数量。(表表示数量附加的用法示数量附加的用法)(注意词序变化即注意词序变化即another和和more与数与数字搭配的位置字搭配的位置: another放在数字前放在数字前, more放在数字后。放在数字后。)eg. We need another three students (=three more students) to help us.Ill stay here for another three days (=three more days).我在这儿还要呆三天。我在这儿还要呆三天。Just a moment, please. Ill finish it in

35、 _ five minutes. (1998呼市呼市)A. another B. other C. more D. less-Have you finished your report yet?-No. Ill finish it in _ ten minutes. (2002呼市呼市)A. another B. other C. more D. less If you want to change for a double room, youll have to pay ten _ dollars. A. other B. more C. another D. each (01呼市呼市)AA

36、B运算表达法运算表达法：2 + 3 = 5 Two and / plus three is five. 8 3 = 5 Eight minus three is five. 33 = 9 Three times three is nine. 82 = 4 Eight divided by two is four. 问句：问句：2 + 3 =? How much is two and / plus three?基数词也可以表示顺序：基数词也可以表示顺序：Room 207 Class One, Grade ThreeLesson One = the first lesson Page 5 = th

37、e fifth pageBus No. 3 = the No. 3 busNo. 1 Middle School207房间房间 三年级一班三年级一班第一课第一课第五页第五页3 路汽车路汽车第一中学第一中学名词名词+ +基数词基数词数词的表示法数词的表示法 编号编号= =the+ +序数词序数词+ +名词名词. The Smiths have moved to No. 5 Building, and are now living in _.A. 208th Room B. Room 208 C. Room No. 208 D. the 208 Room房间号码的表示法为：房间号码的表示法为：Room+基数词。基数词。B. Now, everyone, please turn to Page _ and look at the _ picture. (2012兰州市兰州市)A. Twelve; fifth B. Twelfth; fifthC. Twelve; five D. Twelfth; five AMr Zhang stays at _ on _ floor at Changqing Hotel.A. Room 203; second B. 203 Room; the secondC. Room 203; the second D. the Room 203; twoC