中考英语专题复习专题(_数词)(1)

1、中考英语专题复习专题(_数词)(1)专题 数词表示数目或顺序的词是。数词有两种：基数词和序数词。词表示数目，如：one, two, three;词表示数目的顺序如：first, second third等且序数词常与定冠词the 连用。一、基数词1.基数词的基本构成(1)从 1- 12 是独立的数词：one, two, three, four, five, six, seven, eight, nine, te n, eleven, twelve。(2)从 13 - 19：在个位数后-teen，并有两个重音。thirteen, fifteen,eighteen, nineteen(3)从20-

2、90的各整十位数都以-ty结尾。twenty, thirty,fifty, eighty, ninety(4)20到100之间的其余的两位数，要在十位和个位之间加连字符号“” 。twenty-five, thirty-two, ninety-eight(5)百位以上的数词，要在百位和十位(没有十位则和个位)之间加and。101：one hundred one258：two hundred fifty-eight(6)英语中的数词每3位数一个单位hundred，thousand 千，million百万 ,billon十亿从个位向前，每三位加一个“，”；第一个“，”号前是thousand(千) ，

3、第二个“，”前是million(百万)。95，680：ninety five thousand, six hundred and eighty(7) hundred, thousand, million的用法hundred, thousand, million在任何具体数字之前，都要用单数形式。但如果其后有of，则要用复数形式(其前面不能再加具体数目)。例如：two million 200万 millions of 数百万thousands of visitors have come to Beijing in the last two months.在过去的两个月里有成千上万的来访者到过北京

4、。二。.基数词的用法(1）基数词在句子中可以作主语、宾语、定语、表语和同位语。Two of them are workers from China. 他们之中有两名是来自中国的劳工。(作主语)-How many pieces of paper do you want?-I want two. -你要几张纸?我要两张。(作宾语)-Three times five is fifteen. 3乘5等于15。(作表语)His daughter is only five. 他的女儿只有5岁。(作表语)There are twenty two boy students in our class. 我们班有

5、22个男生。(作定语)They two will go to attend the meeting with you.他们俩个人将与你一起去参加那个会议。(作同位语)(2)基数词与名词连用表示编号。Lesson Eight 第八课Class One, Grade Three 三年级一班Room 102 102号房间No.4 Middle School 四中38 Changan Street 长安街38号Bus No.10 10路公共汽车P.O.Box 325 325号信箱Tel. No. 6850,3258 电话号码：6850，3258(3） 数词复数表示年龄和年代、月份和日期。表求确切年龄S

6、he is ten years old. 她十岁了。表示年代或人的不确切岁数，用几十的复数形式in the forties 在40年代The old man is now in his eighties. 这位老人现在已经80多岁了。表示年、月、日in 1992 在1992年in June, 1966. 在1966年6月on July 28, 1978. 在1978年7月28号(4)基数词用于表示时间。表示时间有两种方法：表示“几点过几分”，30分钟之内用介词。例如：八点十分(810) ten past eight十二点半(1230) half past twelve表示“几点差几分”，30分

7、钟之内(不包括30分整)，用介词。例如：差十分八点(750) ten to eight差一刻九点(845) a quarter to nine也可以按照时刻表直接读数字。例如：二点四十(2：40) two forty五点半(5：30)： (5)基数词可以表示算式。8+4=12 Eight plus(and) four is twelve.15-9=6 Fifteen minus nine is (leaves) six.79=63 Seven times nine is sixty three.306=5 Thirty divided by six is five.二、序数词表示数目的顺序或事

8、物的位置的词，叫作序数词。1.序数词的形式从第一到第三为独立的特殊形式first, second, third.从第4到第19以基数词加“th”构成：fourth, fifth, sixth, seventh, eighth, ninth tenth, eleventh, twelfth, thirteenth, fourteenth fifteenth, sixteenth, seventeenth, eighteenth, nineteenth第20以上的的序数词从20到90等以ty 结尾的十位整数，把 y 改成i再加 “eth”构成序数词twentieth, thirtieth, for

9、tieth, fiftieth, sixt ieth, seventieth, eightieth, ninetieth100的序数词为：hundredth。其余的两位或多位数，只将个位改成序数词 ，其余仍用基数词表示：twenty-first, thirty-second, forty-third注意：fifth, ninth, twelfth与原基数词拼写不同。序数词的缩写形式为阿拉伯数字加序数词最后两个字母组成。122nd(第122)，38th(第38)，281st(第281)2.序数词的用法(1)序数词可以作主语、宾语、表语、状语和定语The second is better than

10、 the first.第二个比第一个好。(作主语)He has built five bridges since 1950, now he is starting on the sixth .自1950年以来，他已建造过五座桥了，现在他正开始建第六座桥。(作宾语)Mary is the first to complete the test paper in her class. (作表语)玛丽是她们班上第一个完成试卷的人。She always comes first.她总是第一个到。(作状语)This was the first time he came to China.这是他第一次来中国。

11、(作定语)序数词在使用时，通常前面要加定冠词，当序数词前有物主代词是the省略 ；但是如果序数词前出现不定冠词a 或an时,则表示“再, “又。You can do it a second time.你可以做第二次。(作定语)(2)序数词可以表示日期。It happened on September 18th, 1931.这发生在1931年9月18日。(3)序数词可以表示编号。the twelfth lesson (=Lesson12) 第十二课the second paragaph (=Paragraph Two) 第二段the fourth Middle School (=No.4 Mid

12、dle School) 第四中学the thirty eighth room(=Room 38) 第38号房间the tenth page (Page 10)第10页三、数词的特定表示法和读法分数、小数和百分数的表示方法(1) 分数表示法分数的构成分数的构成为分子用，分母用，分子如果大于1，则分母序数词一般都用数形式。1/2：a (one) half, 1/3：a (one) third, 1/4：a quarter2/5：two fifths, 3/4：three quarters注意：表示“某一整体的几分之几”，使用：分数+of+the+名词。She spent one third of

13、her salaries yesterday.她昨天花去了薪水的三分之一。One half of the students are foreigners.一半的学生是外国人。(2)小数表示法小数只能用基数词表示。其中小数点读作point，零读作zero(或0)；小数点之后按数字依次读出；整数部分为零时，可以省略不读。0.9：zero point nine 或 point nine3.58：three point five eight(3)百分数表示法%读作per cent 18%：eighteen per cent1. About _ (four fifths; four fifth) of

14、the books in our school library _ (is; are) written in Chinese. 2. The boy always stays there for _ (one and a half hour; one and a half hours).3. At the age of _ (thirty; thirtieth), he had his own lab. 4. _ (Two sons their; Their two sons) are in the army.5. _ (Two-fifth; Two-fifths) of the land i

15、n that district _ (is; are) covered with trees and grass.6. Now let me have _ (the third try; a third try). 7. February 28 should be read as _ (February of the 28th ; the 28th of February). 8. Im _ (the taller; taller) of the two boys. 9. Lucy lives on the _(nineth; ninth) floor. She lives _ (two; s

16、econd )floors above me.10. Do you think there is any room for us _( two; the two )?11. The accident happened on _ (nine days of March; the ninth of March ).易混淆点讲解1. 两组与数词有关的介词短语：(1) in +定冠词the +数词的复数形式，表示年代。20 世纪七十年代 ：(2) in +物主代词+数词的数形式，表示某人的年龄。in ones thirties 在某人三十多岁的时候有时在物主代词后面可加上形容词early 或late

17、使其含义更确切一些。The young man is in his early thirties.2. 数词前加every，表达“每一段时间或每隔一段”Every 基数词名词复数 表示：每.Every 序数词名词单数 表示：每隔. every ten days 每10天/每隔9天 every ninth day3.数词(many,some several)+hundred / thousand / million / billion+名词复数hundred / thousands / millions / billions +of+名词复数 (thousand）of visitors have

18、 come to Beijing in the last two months.There are two (thousand） students in our class.4. 数词和冠词的关系a. 序数词前要加定冠词the,当序数词前有指示代词，物主代词或every时the省略, 当序数词为表达名次的名词时，不和定冠词连用；但基数词前不加冠词。Sunday is the first day of a week.Lily came second in the race.This is my third time to come here*b. a / an+序数词，表示“又一、再一”。He

19、failed twice, but he tried it a third time.c. of the +数词，表示“范围”。She is the most beautiful girl of the three.Jim is the taller of the two.5.与another和more 连用时，表示在已有的基础上再加一定数量；其结构为：another+基数词基数词+moreI need another ten daysI need days6.基数词单数名词用构成的复合形容词，作定语。用于表时间和距离等如; a onehundred meter race;注：基数词单数名词可

20、以转换成名词所有格a onehundred meter race=one hundred metersrace7.几个半的表示基数词and a half+名词复数=基数词+名词（复数）and a halfTwo and a half hours1. Peter, how old is your father this year? _. And we just had a party for his _ birthday last weekend.A. Fortieth; forty B. Forty; forty C. Forty; fortieth D. Fortieth; fortieth

21、2. Shanghai has opened its _ TV channel (频道) that sends programs in foreign languages. Great! I can improve my English over it.A. first B. a first C. the first3. Whats the matter, Kangkang? Oh, I feel sorry to hear more than _ people lost their lives in the earthquake (地震) in Sichuan.A. sixty thousa

22、nds of B. sixty thousandC. sixty thousand of D. thousand of4. The important sports festival, the Olympic Games, _ held every _ years.A. is; five B. are; there C. is; four D. are; two 5. Excuse me, how many students are there in your art club? There are _.A. twelve B. twelfth C. the twelfth6. Tim has

23、 tried twice, and his father asks him to have _ third try. A. the B. a C. another D. /7. If a=3, b=4, whats the answer to the question a+2ab+1=? _. A. Twenty-eighth B. Twenty-eight C. Thirteen D. Eighteen8. What class are you in? Im in _. A. Grade 9 B. Class 9 C. Group 9 D. No. 99. Come and see me i

24、n _. With pleasure. Thats what Im expecting. A. two or three days B. two or three days timeC. two or three days time D. two or three days10. Dick, it is the _ time in _ days that youve made the same mistake. A. two; three B. second; three C. two; third D. second; third11. Do you know when Christmas

25、Day is? Its on _. A. December 24th B. January 1st C. December 25th D. October 1st12. I went to college in _ and began to work in _. A. the 1980s; twenty B. the 1980s; my twentiesC. 1980; my twenty D. 1980s; my twentieth13. I was born _. A. in Oct. 8, 1969 B. in 1969, Oct. 8 C. on Oct. 8, 1969 D. on

26、1969, Oct. 814. _ tigers in that forest are in danger. Now only _ the tigers are protected. A. Hundreds of; three-fourths of B. Hundreds; three-fourths C. Hundreds of; three-fourths D. Hundred of; three-fourths of15. Everyone knows that Hainan Island is the _ largest island in China. A. first B. sec

27、ond C. third D. fourth16. Whats one sixth and a half? Its _. A. one twelfth B. four sixth C. two thirds D. one third17. The Olympic Games are held _. A. every four years B. every four year C. every fourth years D. every four-years18. He is _ in our class. A. the fourth tallest B. fourth tallest C. f

28、our tallest D. the four tallest19. The river is more than _. A. twenty metre wide B. twenty metres wide C. twenty metre of wide D. wide of twenty metre20. The low temperature will be minus 5. The underlined part means _. A. 5 B. -5 C. 0.5 D. 521. Where is the head teacher? Maybe he is in _.A. Two Ro

29、om B. the Two Room C. Rooms two D. Room Two22. About _ of the workers in the factory were born in the _.A. two-thirds; 1970B. two-thirds; 1970sC. two-third; 1970 D. two-third; 1970s23. So far, doctors have saved _ peoples lives in the quake-hit area. A. thousands of B. thousand C. thousand of24. The work is too difficult for Mr Zhu to finish in