初中英语_数词详解及专项练习[1].doc

基数词&序数词一、基数词1. 1-10 （ one, two, three, four, five, six, seven, eight, nine, ten）2. 11-19 (eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen)3. 两位数（非整数），十位数和个位数之间用连字符“-”。 （ 21 twenty-one； 76 seventy-six）4. 两位数（整数），以ty结尾； （40 forty； 90 ninety）4. 三位数，在百位数和十位数之间用and连接。 101 a hundred and one； 320 three hundred and twenty； 648 six hundred and forty-eight5. 百（hundred），千（thousand），百万（million），千万（billion）6. 表示确切的百、千、百万时，不能用其复数形式； ( 400 four hundred，hundred不加s) 表示成百、成千时，用其复数形式；( 成百 hundreds of; 成千 thousands of )7. 表示“人的不确切岁数”，用几十的复数形式； He became a professor in his thirties. （他在三十多岁成为教授。）8. 表示年代时，用几十的复数形式； It was in 1960s. （那是在20世纪60年代。）二、序数词1、英语的序数词基本变法：(1) 1-19：一般在基数词后加th 特殊情况：one-first ; two-second; three-third; eight-eighth; nine-ninth; -ve结尾的改ve为f加th；（如five-fifth； twelve-twelfth） (2)两位数（整数），改y为-ie，加th； (如twenty-twentieth； thirty-thirtieth) （3）两位数/多位数（非整数），仅个位数部分用序数词。 （如：thirty-sixth, fifty-third, one hundred and twenty-first）2.缩写形式：阿拉伯数字 + 序数词末尾两个字母 （只有1st, 2nd, 3rd为特殊形式，其他都是阿拉伯数字+ th） first -1st； second-2nd; twentieth -20th; twenty-third -23rd三、基数词/序数词用法辨别1. 基数词也可以表示顺序，要将基数词放在名词之后。 the first Lesson - Lesson One / the fifth page - Page 52. (1)序数词前面加the时,表示顺序,This is the fourth time I come here. 这是我第四次来这儿。 (2) 加a/an时表示“再一、又一”Weve tried it three times. Must we try it a fourth time? 我们已经试过三遍了，还必须再试一次（第四次）吗？四、时间的数词表示法1. 表示时刻（1）整点用“ oclock ”； （5: 00读作five oclock或five） （2）几点过几分，分钟 + past + 小时； （five past seven 七点过五分； a quarter past eight八点过一刻； half past eight八点半）（3） 几点差几分，分钟 + to + 小时； （ten to eight八点差十分； a quarter to twelve 十二点差一刻）（4） 直接法：小时 + 分钟； （6: 31读作six thirty-one； 10:26 ten twenty-six）2. 表示日期，用the 加序数词表示，或用缩写形式 12月1日: Dec.1st或the first of December；2002年11月8日: Nov. 8th, 2002.3. 表示年份，用基数词表示 2002读作twenty thousand and two； 1976读作 nineteen seventy-six4. 表示年代，用the + 年代 + s/ s 在20世纪30年代： in the 1930s 或 in the 1930s5. 表示世纪，用the + 序数词 + century，或者 the + 整百 + s/s 20世纪： the 20th century 或 the 1900s/ the 1900s 五、分数/小数/百分数表示法1、分数表示法：基数词作分子，序数词作分母； 分子是“1”时，序数词用单数；除此之外，序数词用复数 1/3：one third / a third； 1/2：a half； 1/4：one quarter ； 3/4：three fourths/ three quarters ； 1：one and a half2. “半”的表达： 一半-a half； 半小时half an hour； 1.5小时one and a half hours或one hour and a half. 3. 当分数后接名词时，如果分数值大于1，名词用复数；小于1，名词用单数。 one and a half hours一个半小时； two and three fourths meters 2.75米3） 小数：小数点左边合起来读，小数点右边的数字分开读，小数点读作point 10.25 -ten point two five / 1.03-one point o three4） 10.25 -ten point two five / 1.03-one point o three4） 百分数：用基数词+ percent表示 50%-fifty percent； 3% - three percent 数词习题精选1. Which number is wrong? _. （ ）A. Ninety B. Ninteen C. Ninth D. Nineteenth2. -How old is your daughter? （ ）-_. We had a special party for her _ birthday last week.A. Ninth; ninth B. Nine; nine C. Ninth; nine D. Nine; ninth3. There are _ students in our school. （ ）A. fourhundred and fortyfive B. four hundred and fortyfiveC. four hundreds and fortyfive D. four hundred and forty five4. The number 4,123 is read _. （ ）A. four thousand one hundred and twenty-threeB.four thousand and one hundred twenty-threeC. four thousand and a hundred and twenty-threeD. four thousands a hundred and twenty-three5How do you say 15,858 in English? （ ）A. Fifteen thousands, eight hundred and fifty-eightB. Fifteen thousand, eight hundreds and fifty eight.C. Fifteen thousand, eight hundred and fifty-eightD. Fifteen thousand and eight hundred and fifty-eight.6. Tuesday is the _ day of a week in English. （ ）A. first B. second C. third D. Fourth7. The students went out of the room_. （ ）A. one by two B. one by one C. two by another D. one by the other8. Ive been a student there for nearly two and _ half years. （ ）A.a B.an C.the D./9. - How soon will you finish your work? - In about _. （ ）A. one and a half month B. one month and a halfC. one and half a month D. a month and half10. It took me _ to find out the key to the drawer. （ ）A. one and half hours B. one and a half hoursC. one and a half hour D. one and half hour11. Do you think there is any room for us _ ? （ ）A.two B. the two C. second D. the second12. 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.13 How old is Steve? （ ）He is _ and he has an _ sister.A. 13-year-old; 10 years old B. 13 years old; 11-year-oldC. 13 years old; 10-years-old D. 13-years-old; 11-years-old14. Their house is about _ as big as ours. （ ）A. times three B. three time C. time three D. three times15 of the coats made of cotton. They feel comfortable. （ ）A.Two-thirds; is B. Two-thirds; areC. Two-third; is D. Two third; are16- Do you mind telling us something about this area? （ ）- Not at all. _ of the land in this area _ covered with trees and grass.A. Two fifth, is B. Two fifth, areC. Two fifths, is D. Two fifths, are17_ of the floor _ wet. （ ）A. Three quarter;is B. Three fourths; isC. Three fourth;are D. Three quarters;are18About _ of the workers in my company _ to work every day （ ）Atwo-nineths; drives Btwo-nineths; driveCtwo-ninths; drives Dtwo-ninths; drive19Can I help you? - Yes, Id like _for my twin daughters. （ ）A.two pair of shoes B. two pair of shoeC. two pairs of shoes D. two pairs of shoe20We dont have enough nurses to look after the patients. At least _ are needed. （ ）A. ten another nurses B. more ten nursesC. other ten nurses D. another ten nurses21. At night we can see _ stars in the sky. （ ）A. thousands and thousands of B. thousand and thousands ofC. a thousand and thousands D. thousand and thousand22 The _ World Table Tennis Championship began _ the morning of May25, 2010 _ Moscow, Russia. （ ）AFifty; in; in BFiftieth; on; in CFiftieth; in; on DFifty; on; in23. The train from Shanghai will arrive _. （ ）A. in quarter past six B. in a quarter past sixC. at quarter past six D. at a quarter past six24. “Whats the date today?” “Its _.” （ ）A. Tuesday B. June Fourth C. June the four D. June the fourth25. “What year is it?” “Its _.” （ ）A. nineteen hundred and ninety-seven B. nineteen and ninety-sevenC. nineteen ninety and seven D. nineteen ninety-seven26. The basketball team of our school ranks _ in the match. （ ）A. three B. third C. the three D. the third27. _, Coca-Cola began to enter Chinas market. （ ）A. In 1970s B. In 1970s C. In the 1970s D. In the 1970s数词专项练习题（答案）1.B2.D3.B4.A5C【解析】试题分析：在英语中，当数次表示具体数字时，用单数形式。在读超过一百的数字时，习惯读法是在百位和十位之间用介词and相连，其它数位一次读出各级数位即可，选项ABD读法有误，故选C。考点：英语中数字的读法点评：英语中数词的应用有一些不同于汉语的规则，学习中应注意总结记忆。6.C7.B8.A。two and a half years也可说成two years and a half，意思都是“两年半”。9.B10.B11.B12.D13B【解析】试题分析：“数字-名词-形容词”的结构表示的是符合形容词，一般作定语。在这种结构中应注意两点：一是用连字符，二是名词必须用单数。而“数字+名词（复数）+形容词”的结构，一般做作表语。根据本题中的两个空的位置可知，第一个是作表语，而第二个是作定语。所以本题选B。考点：本题考查固定用法点评：做本题时，比较容易选错，许多学生不知什么时候用作定语，什么时候用作表语；有时有的学生还加以混用。所以对此应该准确掌握。14.D15B【解析】分数表示法为：分子用基数词，分母用序数词，分子大于1, 分母加s，在分子与分母之间可加连字符也可不加连字符，所以2/3表示为two-thirds 或two thirds ；分数在句中作主语时谓语和它修饰或指代的名词保持一致。本题中two-thirds指代coats, 所以谓语用复数形式are。故选B。考点：分数表达及主谓一致16C【解析】试题分析：根据题干，第一个空是分数。在英语中表示分数时，分子用基数词，分母用序数词，分子超过一的，分母要加s，故用排除AB；根据本句的主语 the land可知，此处应该用is。所以本题选C。考点：本题考查分数点评：题需要熟练掌握分数的表达方法；另外，第二个空前面题干比较长，需要认真分析本句的主语是什么，这是较难的。17B【解析】试题分析：英语中一般用基数词表示分数的分子，用序数词表示分数的分母。当分子是一时，分数的分母用单数形式，在表示分数时，当分数的分子大于一时，分数的分母要用复数形式。句意：地板的四分之三都湿了。有分数修饰的名词的单复数，与被修饰的名词保持一致，floor作为地板讲时，是不可数名词。故谓语动词用单数，选B。考点：分数表达点评：英语分数的表达规则比较固定，学习中应牢记这些基本规则。需注意的是，由分数修饰的主语后面谓语动词的数，和被修饰主语的单复数保持一致。18D【解析】试题分析：句意：在我的公司每天大约有九分之二的员工开车上班。two-ninths九分之二，为固定表达，本句中主语为workers，为复数形式，谓语动词用复数形式，故选D考点：分数的表达点评：英语中分数的表达，分子用基数词，分母用序数词，当分子大于1时，分母用序数词的复