初中英语数词专项练习(共6页).doc
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1、精选优质文档-倾情为你奉上数 词数词分为基数词和序数词两种。表示数目或数量多少的词叫基数词;表示数目顺序的词叫序数词。 一.基数词 1.基数词就注意以下几点: (1)几十几的基数词的十位数与个位数之间要用连字符“-”连接。如: eighty-five85 twenty-six26 (2)三位数的基数词须在百位和十位(若无十位则和个位)之间用and连接。如: threehundredandsixty-five365 twohundredandsix206 (3)基数词的复数形式。当基数词hundred,thousand,million,billion等词前有具体数词或several修饰时,必须用
2、单数。如: severalhundredyearsago几百年前 twothousandstudents两千个学生 2.基数词的特殊用法: (1)表示“几十年代”或“几十岁”时,用逢十的基数词的复数形式。如: inthe1990s20世纪90年代 inonestwenties在某人20多岁时 (2)用在习语中。如: intwosandthrees三三两两地 二.序数词 序数词应注意的几点事项: 1.多位数的基数词变成序数词时,只需将末位基数词变成序数词,前边的基数词不变。如: forty-two42forty-second第42 nine-hundred900nine-hundredth第90
3、0 2.当序数词用阿拉伯数字表示时,必须在数字后加上序数词的最后两个字母。如: 21st第21 32nd第32 3.序数词前一般要用定冠词the,如果序数词前用a或an时,则表示“又一;再一”(没有具体范围的限制)。如: Thoughhehadfailedtwice,hewantedtotryathirdtime. 尽管他已失败了两次,他还想再试一次。 Thelittlemonkeyhadhadthreeapples,andhewantedtoeatafourthone. 那只小猴子已经吃了3个苹果,他还想再吃一个。 三.分数和百分数 1.分数 (1)分数的分子用基数词,分母用序数词。如: o
4、nefifth五分之一 onetenth十分之一 (2)当分子大于1时,分母用序数词的复数。如: twothirds三分之二 fiveeighths八分之五 (3)当分子是1时,可以用one也可以用a。如: asecond=onesecond athird=onethird (4)当分母是2和4时,分别可以用half和quarter代替。如: ahalf二分之一 threequarters四分之三 2.百分数 百分数用percent表示。如: fortypercent百分之四十 threepercent百分之三 3.分数、百分数与主谓一致 分数、百分数的考查往往和主谓一致相联系。当分数、百分数
5、修饰可数名词的复数时,谓语动词用复数形式;当分数、百分数修饰不可数名词时,谓语动词用单数形式。如: EightypercentofthestudentsinourschoolcomefromHenan. 我们学校百分之八十的学生来自河南。 ThreefourthsofthestudentsinmyclassareinterestedinEnglish. 我们班四分之三的学生对英语感兴趣。 Twothirdsofthewaterontheearthisseawater. 地球上三分之二的水是海水。 四.倍数的表示法 1.表示“几倍大小(长短;数量)”,由“倍数+thesize(length,am
6、ount.)”结构组成。如: Theearthisforth-ninetimesthesizeofthemoon. 2.表示“比大几倍”,由“倍数+形容词(副词)比较级+than+被比较部分”结构组成。如: Thisboxisthreetimesbiggerthanthatone. 3.表示“是倍”,由“倍数+as+形容词+as+被比较部分”结构组成。如: Ourfactoryistwiceasbigastheirs.数 词( ) 1. Lincoln was born on _. A. February 12, 1809 B. 1809, February 12 C. 1809, 12 Fe
7、bruary D. February 1809,12( ) 2. A _ boy can sing the English song very well. A. ten-year-old B. ten years old C. ten-year-old D. fifth years old( ) 3. An hour later, _ minister was sent to see the “magic cloth” woven by those two men. A. two B. the second C. the two D. second( ) 4. Abraham Lincoln
8、was _ President of the United States. A. 16 B. the 16 C. 16th D. the 16th( ) 5. Do you think there is any room for us _ ? A. two B. the two C. second D. the second( ) 6. -How many students are there in your class? -_. A. Twenty nine B. Thirty and two C. Forty-five D. fifties( ) 7. Which number is wr
9、ong? _. A. Ninety B. Ninteen C. Ninth D. Nineteenth( ) 8. The Peoples Liberation Army was founded _. A. on August 1, 1927 B. in 1927, 1 August C. on August 1st, 1927 D. in August 1, 1927( ) 9. The number 4,123 is read _. A. four thousand one hundred and twenty-three B. four thousand and one hundred
10、twenty-three C. four thousand and a hundred and twenty-three D. four thousands a hundred and twenty-three( ) 10. The old professor still works hard though he is _. A. in his sixty B. in his sixties C. in sixties D. in the sixty( ) 11. This classroom is _ ours.A. three times big asB. as three times b
11、ig as C. three times as big as D. as big three times as( ) 12. The basketball team of our school ranks _ in the match. A. three B. third C. the three D. the third( ) 13. Which is the car that he drives? Its _. A. fifty two B. the fifty-two cars C. the car fifty four D. the fifty-fourth car( ) 14. Wh
12、ich 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.( ) 15. Our school is not very big. There are only _ students. A. nine hundreds of B. nine hundred C. nine hundreds D. nine hundred of( ) 16. -How many new wo
13、rds are there in _ lesson?- There are only _. A. five; fifth B. fifth; five C. the fifth; the five D. the fifth; five( ) 17. _, Coca-Cola began to enter Chinas market. A. In 1970s B. In 1970s C. In the 1970s D. In the 1970s( ) 18. There was no bus in that small town. We had a _. A. ten miles walk B.
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