一 數(shù)詞的種類 數(shù)詞分基數(shù)詞和序數(shù)詞
基數(shù)詞是表示自然數(shù)列的詞, 例如; one , two ,three ,four.....
序數(shù)詞是表示先后順序的詞, 例如: first, second , third,fourth...
二 基數(shù)詞和序數(shù)詞的表示法
1．基數(shù)詞單詞的拼寫：1~12為單詞，13~19都以后綴-teen結(jié)尾，20至90這樣的整十?dāng)?shù)都以后綴-ty結(jié)尾，其他基數(shù)詞中間加連字符號(hào)“-”再按照上述的變化進(jìn)行。
例：21→twenty-one 56-- fifty-six 85→eighty-five
三位數(shù)的構(gòu)成為：幾+百+and+末兩位（或末一位）數(shù)
例：132→one hundred and thirty-two
205→two hundred and five
千以上的數(shù)字的讀法：從后面往前，每三位數(shù)作為一個(gè)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 two
2. 序數(shù)詞=基數(shù)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ty結(jié)尾的基數(shù)詞變詞尾為tieth
例：twenty→twentieth, ninety→ninetieth
3)復(fù)合序數(shù)詞只需要將相應(yīng)基數(shù)詞中最后一位變成序數(shù)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(shù)詞序數(shù)詞的用法
1. hundred, thousand, million 與數(shù)字連用，表示一定量的具體數(shù)字，不用復(fù)數(shù)，但表示不定概念可用復(fù)數(shù)
例：three hundred people, millions of people
2. 基數(shù)詞表示時(shí)刻。
例：7點(diǎn) seven o‘clock, 7:20 seven twenty
3. 給某些事物編號(hào)
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. 有關(guān)分?jǐn)?shù)表示法。分子是基數(shù)詞，分母是序數(shù)詞。當(dāng)分子大于1時(shí)，分母就用復(fù)數(shù)。
例：I’ve read one-fifth of the books.
I‘ve finished three-fifths of the words.
5. 有關(guān)倍數(shù)表示法
兩倍用twice, 三倍以上用數(shù)詞+times, 要注意倍數(shù)在句子的位置。
例：The door is three times the size of this.
6. 十位數(shù)字（個(gè)位為零）的基數(shù)詞以復(fù)數(shù)形式出現(xiàn)時(shí)，表示年代、年齡
例：She is a good-looking woman in her forties. (forties 指40-49歲之間)
四． 數(shù)詞實(shí)練習(xí)題解析：
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
本題在于掌握千以上數(shù)字的讀法，在千、百前面有數(shù)字，不加復(fù)數(shù)；百位、十位中間加and ，每三位為一組，再加相應(yīng)的單位即可，故選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?jǐn)?shù)表達(dá)法前文闡述已經(jīng)很多，應(yīng)表示為one-third. 要區(qū)分the number of 與a number of , the number of 指“......的數(shù)量” ，謂語動(dòng)詞用單數(shù)；
a number of 意為“許多”，謂語動(dòng)詞為復(fù)數(shù)。故選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
千以上的數(shù)字，從后往前三個(gè)數(shù)為一個(gè)單位，即從85之后順次寫出三個(gè)數(shù)即可，即626，連在一起即為85626。故選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
本題考查分?jǐn)?shù)的表達(dá)法，分子用基數(shù)詞，分母用序數(shù)詞，當(dāng)分子大于1，
分母用復(fù)數(shù)，因此它的表達(dá)法為four-fifths,故選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、百萬等詞與數(shù)字連用不用復(fù)數(shù)，因此不加s。其次表示百位數(shù)時(shí)要在百位和十位之間（無十位，則在百位和個(gè)位之間）加and ，再次在個(gè)位與十位之間要有連字符“-”，故本題選A
6. January is New Year’s Day.
A. one B. two C. the first D. the second
某月的幾號(hào)要用序數(shù)詞表示，讀時(shí)序數(shù)詞前要加the 。故選C
7. Take the turning on your night.
A. nine B. ninth C. nineteen D.nineth
根據(jù)題意判斷本題考第幾個(gè)轉(zhuǎn)彎處需用序數(shù)詞，拼寫正確的只有B
五．專項(xiàng)練習(xí)
1. There are days in a week.
A. the seven B. seventh C. the seventh D. seven
2. I think that the century (世紀(jì)) 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
基數(shù)詞是表示自然數(shù)列的詞, 例如; one , two ,three ,four.....
序數(shù)詞是表示先后順序的詞, 例如: first, second , third,fourth...
二 基數(shù)詞和序數(shù)詞的表示法
1．基數(shù)詞單詞的拼寫：1~12為單詞，13~19都以后綴-teen結(jié)尾，20至90這樣的整十?dāng)?shù)都以后綴-ty結(jié)尾，其他基數(shù)詞中間加連字符號(hào)“-”再按照上述的變化進(jìn)行。
例：21→twenty-one 56-- fifty-six 85→eighty-five
三位數(shù)的構(gòu)成為：幾+百+and+末兩位（或末一位）數(shù)
例：132→one hundred and thirty-two
205→two hundred and five
千以上的數(shù)字的讀法：從后面往前，每三位數(shù)作為一個(gè)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 two
2. 序數(shù)詞=基數(shù)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ty結(jié)尾的基數(shù)詞變詞尾為tieth
例：twenty→twentieth, ninety→ninetieth
3)復(fù)合序數(shù)詞只需要將相應(yīng)基數(shù)詞中最后一位變成序數(shù)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(shù)詞序數(shù)詞的用法
1. hundred, thousand, million 與數(shù)字連用，表示一定量的具體數(shù)字，不用復(fù)數(shù)，但表示不定概念可用復(fù)數(shù)
例：three hundred people, millions of people
2. 基數(shù)詞表示時(shí)刻。
例：7點(diǎn) seven o‘clock, 7:20 seven twenty
3. 給某些事物編號(hào)
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. 有關(guān)分?jǐn)?shù)表示法。分子是基數(shù)詞，分母是序數(shù)詞。當(dāng)分子大于1時(shí)，分母就用復(fù)數(shù)。
例：I’ve read one-fifth of the books.
I‘ve finished three-fifths of the words.
5. 有關(guān)倍數(shù)表示法
兩倍用twice, 三倍以上用數(shù)詞+times, 要注意倍數(shù)在句子的位置。
例：The door is three times the size of this.
6. 十位數(shù)字（個(gè)位為零）的基數(shù)詞以復(fù)數(shù)形式出現(xiàn)時(shí)，表示年代、年齡
例：She is a good-looking woman in her forties. (forties 指40-49歲之間)
四． 數(shù)詞實(shí)練習(xí)題解析：
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
本題在于掌握千以上數(shù)字的讀法，在千、百前面有數(shù)字，不加復(fù)數(shù)；百位、十位中間加and ，每三位為一組，再加相應(yīng)的單位即可，故選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?jǐn)?shù)表達(dá)法前文闡述已經(jīng)很多，應(yīng)表示為one-third. 要區(qū)分the number of 與a number of , the number of 指“......的數(shù)量” ，謂語動(dòng)詞用單數(shù)；
a number of 意為“許多”，謂語動(dòng)詞為復(fù)數(shù)。故選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
千以上的數(shù)字，從后往前三個(gè)數(shù)為一個(gè)單位，即從85之后順次寫出三個(gè)數(shù)即可，即626，連在一起即為85626。故選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
本題考查分?jǐn)?shù)的表達(dá)法，分子用基數(shù)詞，分母用序數(shù)詞，當(dāng)分子大于1，
分母用復(fù)數(shù)，因此它的表達(dá)法為four-fifths,故選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、百萬等詞與數(shù)字連用不用復(fù)數(shù)，因此不加s。其次表示百位數(shù)時(shí)要在百位和十位之間（無十位，則在百位和個(gè)位之間）加and ，再次在個(gè)位與十位之間要有連字符“-”，故本題選A
6. January is New Year’s Day.
A. one B. two C. the first D. the second
某月的幾號(hào)要用序數(shù)詞表示，讀時(shí)序數(shù)詞前要加the 。故選C
7. Take the turning on your night.
A. nine B. ninth C. nineteen D.nineth
根據(jù)題意判斷本題考第幾個(gè)轉(zhuǎn)彎處需用序數(shù)詞，拼寫正確的只有B
五．專項(xiàng)練習(xí)
1. There are days in a week.
A. the seven B. seventh C. the seventh D. seven
2. I think that the century (世紀(jì)) 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