1、牛津小學五年級英語上學期英語語法(六)數詞一 數詞的種類 數詞分基數詞和序數詞 基數詞是表示自然數列的詞, 例如; one , two ,three ,four.序數詞是表示先后順序的詞, 例如: first, second , third,fourth二 基數詞和序數詞的表示法1基數詞單詞的拼寫：112為單詞，1319都以后綴-teen結尾，20至90這樣的整十數都以后綴-ty結尾，其他基數詞中間加連字符號“-”再按照上述的變化進行。例：21twenty-one 56- fifty-six 85eighty-five三位數的構成為：幾+百+and+末兩位（或末一位）數例：132one hun

2、dred and thirty-two205two hundred and five千以上的數字的讀法：從后面往前，每三位數作為一個單位，分別為thousand, million.32, 548, 652, 讀作：thirty two million, five hundred and forty eight thousand, six hundred and fifty two2. 序數詞=基數詞+th (1、2、3為 first, second, third)。但以下幾種情況要注意：1) fifth (第五)，eighth (第八)，ninth (第九)，twelfth （第十二）2) 以

3、ty結尾的基數詞變詞尾為tieth例：twentytwentieth, ninetyninetieth3)復合序數詞只需要將相應基數詞中最后一位變成序數詞，其余不變。例：第二十一twenty-first第二百四十五two hundred and forty-fifth三 基數詞序數詞的用法1. hundred, thousand, million 與數字連用，表示一定量的具體數字，不用復數，但表示不定概念可用復數例：three hundred people, millions of people2. 基數詞表示時刻。例：7點 seven oclock, 7:20 seven twenty3.

4、給某些事物編號例：Lesson One=the first lessonBus No. 2 7月1日=July I (July Ist)1996年6月3日=June 3, 1996=June the third, nineteen ninety-six4. 有關分數表示法。分子是基數詞，分母是序數詞。當分子大于1時，分母就用復數。例：Ive read one-fifth of the books.Ive finished three-fifths of the words. 5. 有關倍數表示法兩倍用twice, 三倍以上用數詞+times, 要注意倍數在句子的位置。例：The door is

5、 three times the size of this.6. 十位數字（個位為零）的基數詞以復數形式出現時，表示年代、年齡例：She is a good-looking woman in her forties. (forties 指4049歲之間)四 數詞實練習題解析：1. The English for 10,440 is .A. ten thousand , four hundreds and forty B. ten thousand, four hundred and fortyC. ten thousands, four hundred and fortyD. ten thou

6、sand and four hundred, forty 本題在于掌握千以上數字的讀法，在千、百前面有數字，不加復數；百位、十位中間加and ，每三位為一組，再加相應的單位即可，故選B2. of the workers in the factory is about two hundred, of them are women workers.A. The number, first-third B. The number, one-thirdC. A number, half D. A number, three quarters 分數表達法前文闡述已經很多，應表示為one-third. 要

7、區分the number of 與a number of , the number of 指“的數量” ，謂語動詞用單數；a number of 意為“許多”，謂語動詞為復數。故選B3. - Can you write the number eighty-five thousand , six hundred and twenty-six?- Yes, it is .A. 85662 B. 85626 C. 85006 D. 85000千以上的數字，從后往前三個數為一個單位，即從85之后順次寫出三個數即可，即626，連在一起即為85626。故選B. 4. About of the books

8、in our school library are written in Chinese.A. fouth-fifths B. four fifth C. four fifths D.fourths-fifth 本題考查分數的表達法，分子用基數詞，分母用序數詞，當分子大于1，分母用復數，因此它的表達法為four-fifths,故選C。5. The road is over meters long.A. six hundred and fifty-twoB. six hundreds and fifty twoC. six hundred, fifty twoD. six hundred, fi

9、fty and two百、千、百萬等詞與數字連用不用復數，因此不加s。其次表示百位數時要在百位和十位之間（無十位，則在百位和個位之間）加and ，再次在個位與十位之間要有連字符“-”，故本題選A6. January is New Years Day.A. one B. two C. the firstD. the second某月的幾號要用序數詞表示，讀時序數詞前要加the 。故選C7. Take the turning on your night.A. nine B. ninth C. nineteen D.nineth根據題意判斷本題考第幾個轉彎處需用序數詞，拼寫正確的只有B五專項練習 1

10、. There are days in a week.A. the seven B. seventh C. the seventh D. seven 2. I think that the century (世紀) 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

11、 number of ; is B. The number of ; areC. 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 Im not sure.A. Hundreds B. Hundred C. Hundreds of D. One hundred 6. of the teachers in our s

12、chool 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 Zhiyis transfer to Dundee Football Club at the end of last year aroused (激起) Chinese peoples interest.A. thousand of B. thousand C. thousands of D. thousands 9. This story happened on .A. 1989, Oct 21st