数词的用法与练习(共4页).doc

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1、精选优质文档-倾情为你奉上数词（Numerals）数词 分为基数词和序数词两种一、 基数词1）基数词的构成及读法 1-12的构成为独立单词 13-19的构成都以后缀-teen结尾，但thirteen，fifteen，eighteen为不规则变化 20-90的构成都以后缀-ty结尾，但twenty，thirty，forty，eighty为不规则变化 21-99的构成是在十位数和个位数之间加连字符- e.g. 25 twenty-five 三位数101-999的构成要注意百位数和十位数（个位数）之间用and连接。 e.g.901 nine hundred and one 英语中没有“万”这个单位，

2、1000以上而不到100万的数词都用thousand表示 百万 1，000，000 ： one(a) million 千万 10，000，000 ： ten million 亿 100，000，000 ： one(a) hundred million 十亿 1,000,000,000 ： one(a) thousand million（等于美国英语a billion）注：英语数字中，只有hundred后才加and2）基数词的复数形式 Hundred，thousand，million和billion在表示具体数目时，不用复数形式，但在一些习惯表达中，相当于普通名词，可有复数形式 e.g. tho

3、usands of years ago数词复数形式还可以表示不十分精确的年龄、年代和其他表达方式 e.g. He died in his fifties.3.基数词的作用作主语 e.g. Two of the girls are from California.姑娘中有两个来自加州。作表语 e.g. He is a little over five.他才五岁多一点。作宾语 e.g. Give me two.给我两个。作定语 e.g. The river is about eighty miles long.这条河大约八十英尺长。作同位语 e.g. You two take these seat

4、s.你们两个坐这里。二、 序数词1）序数词的构成序数词多数由“基数词-th”构成，序数词前一般加定冠词the少数序数词构成属特殊情况 e.g. One-first two-second three-third five-fifth eight-eighth nine-ninth twelve-twelfth以y结尾的十位整数，先将y改为i，再加-eth e.g. thirty-thirtieth21以上的多位数，要将末位数改为序数词，前面其他位数仍用基数词 e.g. eighty-threeeighty-third nine hundred and sixty-twonine hundred

5、and sixty-second序数词的缩写形式由阿拉伯数字加序数词的后两个字母构成 e.g. first1st second2nd2）序数词的用法作主语 e.g. The third of the month was a holiday.作表语 e.g. Who was the third?作定语 e.g. We live on the fifth floor.作宾语 e.g. I was among the first to learn of this.作同位语 e.g. Who is that man, the first in the front row?作状语 e.g. When d

6、id you first meet him?注：有时序数词并不指顺序，而是表示“再一，又一”的意思。此时序数词前要加不定冠词 e.g. I want to make a second try.三、 数词的用法1) 编号事物的表示编号的事物常用“名词+基数词”表示，也可用“序数词+名词”表示；如果数字较大，需用“名词+基数词”表示住址、牌号及其他顺序号码 the ninth unitUnit 9 Bus No.103the No.103 bus World Warthe second world war Room 305 76 Changan Street汽车牌照号码、电话号码、货币数目 961

7、78 nine six one seven eight Tel: Telephone number: eight seven four two five eight nine $5.46 five dollars forty-six cents2) 时刻的表示法 表示时刻用基数词表示整点可加oclock，口语中常省略 e.g. Excuse me. Whats the time? Its five (oclock).表示“几点几分”有两种形式A. 倒读法 30分以内用“分钟数+past+钟点数”，表示几点过几分。超过30分钟用“分钟数+to+下一个钟点数”，表示到几点差几分。15分钟用a qu

8、arter，30分钟用half，不用fifteen或thirty，不可在后面加oclock。 e.g. 7:10 ten past seven 6:50 ten to seven 3:15 a quarter past three 5:30 half past fiveB. 顺读法 第一个基数词表示钟点，第二个基数词表示分钟，“分钟”可用fifteen，thirtye.g. 1:15 one fifteen 10:30 ten thirty3) 年、月、日、时的写法和读法 表示日期用序数词，前面加定冠词 e.g. 3月8日 March the eighth 年份一般分为两部分读，先读前两位数，

9、再读后两位数 e.g. 1949 nineteen forty-nine 以上时间合在一起的写法 e.g. 1955年10月1日上午10点 10:00 a.m. October 1st, 19554) 分数的表示法分数由基数词和序数词构成，基数词代表分子，序数词代表分母，除了分子为1的情况，序数词都要用复数形式。带分数中的整数用基数词表示，并用and和分数隔开。e.g. 14 one-fourths 3-25 three and two-fifths5) 小数、百分数的表示小数的表示 e.g. 6.4 six point four 12.409 twelve point four oh nin

10、e 表示百分数用“基数词+percent(per cent)”形式 e.g. 50% fifty per cent数词练习题一、将下列数字与词语写成英语： （1）6 _（2）89_ （3）107_（4.）2405_（5） 7,000,000_（6）5/6 _（7）65_ （8）1.25 _(9)第五_(10)第三十一_ (11)9：00_ (12)10:15_(13)1:58_ (14)12:30_二、选择填空。 ( )1March is _month of a year A a three B the third C a third ( )2We will have a meeting at

11、 8:05_ Afive to eight Beight five Ceight to five ( )3Eight plus eight is_. Asixteen Bsixty-four Cone( ) 4He is an _boy Aeight years Beight-year-old Ceight-years-old ( )5I was born _, 1982. A. on June 2rd B. in June 2nd C. on June two D. on June 2( ) 6The wall is_. Afour meters long Bfour meter long

12、Cfour-meter long ( )7Whats the date today? Its_ AMarch the eight BMarch eighth Ceight，March ( )8Its _ from our home to the zoo.A. two and a half hours walk B. a half and two hours walkC. two hours and a half hours walk D. two and a half hours walk( )9About_ of the earths surface is covered with wate

13、r. A. three-fours B. three-fourth C. three-fourths ( )10. He went down to the village which was_miles away from the city. A. three hundreds B. three hundred C. three hundreds of ( ) 11.If you go out at night, youll be able to see _ starts. A. thousands of B. thousand of C. nine thousands of D. thous

14、ands( ) 2.Monday is _ day of the week. A. first B. the first C. the second D. second( ) 3.Youve done it twice. Why not try _ time? A. third B. the third C. a third D. once( )14.Which is the_ month? Its September. A. nine B. nineth C. ninth D. ninety( )15.There are _ floors in the building and he liv

15、es on the _ floor. A. eighteen, fifteen B. eighteenth, fifteenth C. eighteen, fiveteen D. eighteen, fifteenth( )16.Will you be back in _ ? A. one or two minutes B. one minute or two C. two minutes or one D. two or one minute( )17.Marys uncle went to France _. A. in his thirties B. on his thirties C.

16、 at his thirties D. about his thirties( )18.The headmaster wrote a _ report. A. two thousand words B.two-thousand-words C. two-thousand words D. two-thousand-word( )19.A UN report says that the word population will pass six billion by the end of _ century. A. twentieth B. twenty C. the twentieth D. the twentyth专心-专注-专业