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牛津英语5A英语语法(六)数词牛津英语

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牛津英语5A英语语法()

一 数词的种类 数词分基数词和序数词

  基数词是表示自然数列的词, 例如; one , two ,three ,four…..

  序数词是表示先后顺序的词, 例如: first, second , third,fourth…

二 基数词和序数词的表示法

1.基数词单词的拼写:1~12为单词,13~19都以后缀-teen结尾,20至90这样的整十数都以后缀-ty结尾,其他基数词中间加连字符号“-”再按照上述的变化进行。

例:21→twenty-one 56-- fifty-six 85→eighty-five

  三位数的构成为:几+百+and+末两位(或末一位)数

例:132→one hundred and thirty-two

  205→two hundred and five

  千以上的数字的读法:从后面往前,每三位数作为一个单位,分别为thousand, million.

  32, 548, 652, 读作:thirty two million, five hundred and forty eight thousand, six hundred and fifty two

2. 序数词=基数词+th (1、2、3为 first, second, third)。但以下几种情况要注意:

 1) fifth (第五),eighth (第八),ninth (第九),twelfth (第十二)

 2) 以ty结尾的基数词变词尾为tieth

例:twenty→twentieth, ninety→ninetieth

 3)复合序数词只需要将相应基数词中最后一位变成序数词,其余不变。

例:第二十一→twenty-first

 第二百四十五→two hundred and forty-fifth

三 基数词序数词的用法

1. hundred, thousand, million 与数字连用,表示一定量的具体数字,不用复数,但表示不定概念可用复数

例:three hundred people, millions of people

2. 基数词表示时刻。

例:7点 seven o’clock, 7:20 seven twenty

3. 给某些事物编号

例:Lesson One=the first lesson

  Bus No. 2  7月1日=July I (July Ist)

  1996年6月3日=June 3, 1996=June the third, nineteen ninety-six

4. 有关分数表示法。分子是基数词,分母是序数词。当分子大于1时,分母就用复数。

例:I’ve read one-fifth of the books.

  I’ve finished three-fifths of the words.

5. 有关倍数表示法

  两倍用twice, 三倍以上用数词+times, 要注意倍数在句子的位置。

例:The door is three times the size of this.

6. 十位数字(个位为零)的基数词以复数形式出现时,表示年代、年龄

例:She is a good-looking woman in her forties. (forties 指40—49岁之间)

四. 数词实练习题解析:

1. The English for 10,440 is     .

 A. ten thousand , four hundreds and forty

 B. ten thousand, four hundred and forty

 C. ten thousands, four hundred and forty

 D. ten thousand and four hundred, forty

本题在于掌握千以上数字的读法,在千、百前面有数字,不加复数;百位、十位中间加and ,每三位为一组,再加相应的单位即可,故选B

2. of the workers in the factory is about two hundred,     of them are women workers.

 A. The number, first-third  B. The number, one-third C. A number, half  D. A number, three quarters

分数表达法前文阐述已经很多,应表示为one-third. 要区分the number of 与a number of , the number of 指“……的数量” ,谓语动词用单数;

 a number of 意为“许多”,谓语动词为复数。故选B

3. --- Can you write the number eighty-five thousand , six hundred and twenty-six?

 --- Yes, it is     .

 A. 85662  B. 85626  C. 85006  D. 85000

千以上的数字,从后往前三个数为一个单位,即从85之后顺次写出三个数即可,即626,连在一起即为85626。故选B.

4. About     of the books in our school library are written in Chinese.

 A. fouth-fifths  B. four – fifth  C. four –fifths  D.fourths-fifth

本题考查分数的表达法,分子用基数词,分母用序数词,当分子大于1,

分母用复数,因此它的表达法为four-fifths,故选C。

5. 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

百、千、百万等词与数字连用不用复数,因此不加s。其次表示百位数时要在百位和十位之间(无十位,则在百位和个位之间)加and ,再次在个位与十位之间要有连字符“-”,故本题选A

6. January     is New Year’s Day.

 A. one  B. two  C. the first D. the second

某月的几号要用序数词表示,读时序数词前要加the 。故选C

7. Take the     turning on your night.

 A. nine  B. ninth  C. nineteen  D.nineth

根据题意判断本题考第几个转弯处需用序数词,拼写正确的只有B

五.专项练习

1. There are    days in a week.

 A. the seven  B. seventh  C. the seventh  D. seven

2. I think that the    century (世纪) will bring us more hopes.

 A. twenty-one  B. twentieth-first  C. twenty-first  D. twentieth-one

3. -- How many students are there in your school?

 --    the students in our school    over two thousand.

 A. The number of ; is  B. The number of ; are C. A number of ; is  D. A number of ; are

4. The new student is in    .

 A. Class 2  B. Class Second  C. 2 Class  D. class 2

5. --How many teachers are there in your school?

 --    ,but I’m not sure.

  A. Hundreds  B. Hundred  C. Hundreds of  D. One hundred

6.    of the teachers in our school is about one hundred, and of them are women teachers.

  A. The number, two-thirds  B. The number, two-thid

  C. A number, half  D. A number, three-quarters

7. --- Dad , when will you be free? You agreed to go to the seaside with me four days ago.

 --- I am sorry, Jean. But I think I will have a    holiday soon.

  A. four-days  B. four-day  C. four days  D. four day

8. Fan Zhiyi’s transfer to Dundee Football Club at the end of last year aroused (激起)    Chinese people’s interest.

  A. thousand of  B. thousand  C. thousands of  D. thousands

9. This story happened on    .

  A. 1989, Oct 21st  B. Oct. 21st ,1989 C. 21 Oct, ber , 1989  D. 21st of Octber, 1989

10. "Seven five" can be written    .

  A. five sevens  B. five to seven C. seven fives  D. five past seven

答案: 1-5 D C A A D   6-10 A B C B D