初中英语数词讲解及习题.doc

数词的用法一. 基数词. 表示人或事物数量多少的词.1.基数词的读法.1)11： one two three four five six seven eight nine ten eleven twelve 2)1319词尾加-teen：thirteen fourteen fifteen sixteen seventeen eighteen nineteen 3)2090词尾加-ty :twenty thirty forty fifty sixty seventy eighty ninety 4)2199: 在十位与个位之间加连字符构成. 21 twenty-one 99-ninety-nine5)101999 :先说几百, 再加and ,再加末尾两位数或个位数. 101 one hundred and one 238 two hundred and thirty-eight 6)1000以上的数:先将数字从右往左数,每三位数用一个逗号隔开, 从右往左第一个逗号表示 “千”读thousand 第二个逗号表示 “百万”读million 第三个逗号表示 “十亿”读billion18,657,421 eighteen million, six hundred and fifty-seven thousand, four hundred and twenty-one.二. 序数词，表示人或事物的顺序的词.基数词变序数词的口诀: 基变序,有规律,词尾要加th；一二三,特殊记, (first second third )八去t ,九去e, ve要用f替； ty变作tie,再加th莫忘记；若是遇几十几,只变个位就可以。三. 数词的应用.1.表编号. 结构：名词(首字母要大写) + 基数词 = the +序数词 +名词Lesson One = the first lesson 注：有些编号，一般仅用第一种表达法。 101号房间 Room 1012.序数词前一般加定冠词the 但序数词前与不定冠词a /an 连用时,表示 “又一,再一”Youve done it three times .Why not try _fourth time ?A.a B.an C.the D./3.数词前加every ,表示每/每隔:every +基数词 +复数名词 = every + (序数词-1) +单数名词every ten days =every ninth day 每十天(每隔九天)4.基数词的复数形式表示年代和年龄1)表示年代: in the + 年份的复数 在几世纪几十年代.2)表年龄: in ones + 整十的复数 表示在某人几十岁时5.hundred / thousand /million /billion的用法 1).若hundred / thousand /million /billion 前有基数词时,其后不加s,也不加of . 若没有时, 既加s 也要带of .Every year _ visitors come to China .There are two _ students in our school .A. thousand B. thousands C. thousands of D. thousand of 2).若其前有a few 、many、several 修饰时，通常用复数，后接of.3).若名词前有the修饰时，用单数，后接of Two _the students in our school are from the countryside .A. hundred B. hundred of C. hundreds of D. hundreds 6.几个半的表达法:基数词 + and + a half +名词复数 = 基数词 +名词(单数/复数) +and +a half two and a half hours = two hours and a half 7.时刻表达法:1)整点: 基数词 + oclock 2)几点几分:A)顺读法: 先读小时 ,后读分钟 3:25 - three twenty-five B).逆读法:a)30分钟. 分钟+ past + 小时 3：25 -twenty-five past three b)30分钟. ( 60-分钟 )+ to + (小时数+1)3:55 - five to four c) 30 分钟 = half 15分钟=a quarter 45分钟= three quarters 3:30 -half past three 3:15-a quarter past three 3:45 -a quarter to four 8.日期的表达:结构: 1).月 日,年 (日用序数词,年用基数词)注:年份的读法: 先读前两位数,再读后两位数. 读日时要加the.1900-nineteen hundred 1807-eighteen and seven (eighteen o seven)2008-two thousand eight 2007年3月21日.- March the twenty-first, two thousand and seven. 2).日 月 年 (the +序数词+of +月, 年)2007年3月21日-the twenty-first of March ,two thousand and seven.9.分数的表达:1).结构: a).分子用基数词,分母用序数词. b).当分子大于1时,分母加复数. 3/4- three fourths (three-fourths)2).分数词的几种特殊形式. 1/4one fourth = a quarter 1/2one second = a half b).分数词作主语时, 谓语动词根据分数词后面的名词来确定.巩固练习：一. 把下列短语译成英语：1. 第12课 _ 2. 304号房间 _3. 半小时 _ 4. 每日三次 _5. 第25页 _ 6. 20世纪90年代 _7. 4路公共汽车 _ 8. 第15中学 _9. 21世纪 _ 10. 两吨半 _11. 差一刻三点 _ 12. 第二册 _13. 在他五十几岁时 _ 14. 二年级八班 _15. 10:45 _ 16. 第十五单元 _17. 第三册第十三课 _ 18. 三分之一 _19. 三百英镑 _ 20. 1994年3月22日 _二. 完成下列句子。1) Tom left home _ (20年前 ). 2) Youve been watching TV for _ (半小时). 3) We went to the Palace Museum by _ (52路公共汽车).4) Peter was born in Paris on _ (1975 年3 月4 日). 5) To tell you the truth, weve been there _ (仅仅一次). 6) It took _ (两万多) workers _ (14年) to finish the building. 7) He bought _.（6片面包、一盘鱼、一杯牛奶和两杯茶). 8) That box is about _ (3米长、2米宽). 9) There is a big stone _(前方大约40米处). 10) Its _(9点1刻 ). 1l) He studies at _(第35中学 ). 12) _ (三分之一的医生) in this hospital are old doctors. 13) It took us_(3刻钟) to get there. 14) _ (第100位) student is the tallest. 15) Now lets turn to _ (43页 ).三、单项选择 ( ) 1. Lincoln was born on _. A. February 12, 1809 B. 1809, February 12 C. 1809, 12 February 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 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 wrong? _. 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 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 as B. as three times big 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. 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.( ) 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 words 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. ten-mile walk C. ten miles walk D. tenth mile walk( ) 19. Today is the first day and _. A. Tuesday is fourth B. Thursday is the fourth C. second is Tuesday D. a second is Thursday( ) 20. Which room do you live in? _. A. The 201 Room B. Room 201 C. Room 201st D. The 201s Room( ) 21. How many magazines do you have? I have _. A. two B. both C. twice D. the second( ) 22. Three hundred thousand, one hundred and seventy means _. A. 3,170 B. 3,117 C. 300,170 D. 30,170( ) 23. On May _, _ people traveled round the country. A. the first, millions B. the first, millions of C. first, the millionth D. first, millions( ) 24. _ of them are dining at school. A. Twelve B. Twelfth C. The twelve D. the 12th( ) 25. Its 7:17 is read _.A. seven and seventeen B. seven seven C. seven one seven D. seven seventeen( ) 26. Four _ two is two. A. plus B. minus C. times D. divided by( ) 27. Three _ five is eight. A. plus B. minus C. times D. divided by( ) 28. Three _ seven is twenty-one. A. plus B. minus C. times D. divided by( ) 29. Forty-two _ seven is six. A. plus B. minus C. times D. divided by( ) 30. There are _ days in a year. A. three hundred sixty and five B. three hundred and sixty-five C. three hundreds and sixty-five D. three hundred sixty-five( ) 31. There are _ students in that school. A. two thousand eight-six B. two thousand eighty-six C. two thousand and eighty-six D. two thousands and eighty-six( ) 32. It took me _ to get there. A. two hours and a half B. two hours and half C. two hour and a halfD. two hour and half( ) 33. September is _ month of the year. A. the ninethB. the ninthC. nineth D. ninth( ) 34. Please pass me _ book on the left. A. third B. three C. the third D. the three( ) 35. _ is a very tall boy. A. The twelve B. The twelveth C. The twelfeth D. The twelfth( ) 36. We have known each other for _. A. a year and half B. a year with half C. a year and a half D. a year with a half( ) 37. “What year is it?” “Its _.” A. nineteen hundred and ninety-seven B. nineteen and ninety-seven C. nineteen ninety and seven D. nineteen ninety-seven( ) 38. “Whats the date today?” “Its _.” A. Tuesday B. June Fourth C. June the four D. June the fourth( ) 39. 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( ) 40. My friend was born on _. A. three of July, 1979 B. the third of July,1979 C. 1979, July the third D. 1979, the third of July( ) 41. _ is less than _. A. One-third; two-thirds B. One-third; two-third C. First-three; first-threes D. One-third; one-three( ) 42. Which lesson did you learn yesterday? _. A. Lesson Seven B. Lesson seventh C. The 7 Lesson D. 7 Lesson( ) 43. “Whats the date today?” “Its _.” A. the fourth of may B. the fourth May C. May four D. May the fourth( ) 44. 334 is read _. A. three hundreds and thirty four B. three hundreds thirty four C. three hundred and thirty fourth D. three hundred and thirty-four( ) 45. In F