语法专项十一 —---- 数词
1. 数词有基序数和序数词两类。基数词表示数量的大小，如one, two, three, four等。 序数词表示顺序的词，如first, second, third, fourth等。
数词用法相当于名词和形容词，在句中可用作主语、宾语、表语、定语、同位语等。 2. 基数词变为序数词的规则
one—first, two—second, three—third, eight—eighth, nine—ninth, five—fifth, twelve—twelfth (2)逢十的twenty, thirty?ninety，变y为ieth。如twenty—twentieth, ninety—ninetieth (3)表示第几十几或第几百几十几，只需将个位数改为序数词。 如：56—fifty-six — fifty-sixth，
635 — six hundred and thirty-five — six hundred and thirty-fifth
(4)hundred, thousand, million 等序数词形式为 hundredth, thousandth, millionth 等。 3. 基数词的读写方法
(1)三位数的读写法：个位与十位之间用连字符“-”；百位与十位之间加and；十位为零时也要加and。如： 365读作three hundred and six-five
605读作six hundred and five
(2)大于三位数的读写法：从个位起每三位打一个撇号“，”，第一个撇号读thousand，第二个撇号读million，第三个撇号读billion, 各撇号之间的数按三位及三位以下的数的读法读。如： 一万10,000 读作 ten thousand 十万100,000读作 one hundred thousand 23, 589读作twenty-three thousand five hundred and eighty-nine
6, 632, 900读作six million six hundred and thirty-two thousand nine hundred 28, 000, 000读作twenty-eight million
注意：hundred, thousand, million, billion 通常不带复数词尾-s，但若用于表示数百、数千、
两千人 two thousand people thousands of people成千上万的人 二、数词的主要用法： 1、表示日期
在2006年10月: in October 2006 读作in October, two thousand and six
在1600年5月2日: on May 2nd, 2005 读作on May the second , sixteen hundred 2、表示钟点
如：08:00 eight o’clock或eight 09:15 nine fifteen或a quarter past nine
02:30 two thirty或half past two 05:45 five forty-five或a quarter to six 14:15 fourteen fifteen = 2:15 p. m. 3、表示编号
第二No.2 第一课 Lesson One = the First Lesson 808号房间Room 808 168路公共汽车Bus No.168 南京路1490号1490 Nanjing Road
电话号码83545601 (用基数词逐个念，0念字母O)。 一辆三路公共汽车a No.3 bus 那辆三路公共汽车the No.3 bus 三、巩固练习：
( ) 1. Abraham Lincoln was _______ President of the United States. A. 16 B. the 16 C. 16th D. the 16th
( ) 2. How many students are there in your class? ________.
A. Twenty nine B. Thirty and two C. Forty-five D. fifties ( ) 3. The People's Liberation Army was founded _______.
A. on August 1, 1927 B. in 1927, 1 August C. on August 1st, 1927 D. in August 1, 1927 ( ) 4. The number 4,123 is read _______. A. four thousand one hundred and twenty-three B. four thousand and one hundred twenty-three
C. four thousand and a hundred and twenty-three
( ) 5. Three hundred thousand one hundred and seventy means ________. A. 3,170 B. 3,117 C. 300,170 D. 30,170 ( ) 6. Which of the following is wrong? ________.
A. He is a fifteen-year-old boy. B. He is at the age of 15. C. He is a boy of 15. D. He is fifteen year old.
( )7. Our school is not very big. There are only ________ students.
A. nine hundreds of B. nine hundred C. nine hundreds D. nine hundred of ( ) 8. How many new words are there in ________ lesson? There are only _________.
A. five; fifth B. fifth; five C. the fifth; the five D. the fifth; five ( 9. There was no bus in that small town. We had a ________.
A. ten miles walk B. ten-mile walk C. ten mile's walk D. tenth mile walk ( ) 1-. Which room do you live in? ________.
A. The 201 Room B. Room 201 C. Room 201st D. The 201's Room ( ) 11. It's 7:17 is read ________.
A. seven and seventeen B. seven seven C. seven one seven D. seven seventeen ( )12. Three ________ five is eight. A. plus B. minus C. times D. divided by ( ) 13. Three ______ seven is twenty-one. A. plus B. minus C. times D. divided by ( ) 14. It took me ________ to get there.
A. two hours and a half B. two hours and half
C. two hour and a half D. two hour and half ( ) 15. September is _________ month of the year.
A. the nineth B. the ninth C. nineth D. ninth ( ) 16. “What year is it?” “It's ________.”
A. nineteen hundred and ninety-seven B. nineteen and ninety-seven C. nineteen ninety and seven D. nineteen ninety-seven ( )17. “What's the date today?” “It's _________.”
A. Tuesday B. June Fourth C. June the four D. June the fourth ( ) 18. The train from Shanghai will arrive ________.
A. in quarter past six B. in a quarter past six C. at quarter past six D. at a quarter past six