2022年初中英语_数词详解及专项练习2.pdf
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1、学习资料收集于网络,仅供参考学习资料基数词 & 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)
2、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-eight 5. 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
3、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 twe
4、nty-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 - Le
5、sson One / the fifth page - Page 5 2. (1)序数词前面加 the 时,表示顺序 , 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 1 页,共 7 页 - - - - - - - - - - 学习资料收集于网络,仅供参考学习资料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 ”We ve tried it three times. Must we try it a fourth
6、 time? 我们已经试过三遍了,还必须再试一次(第四次)四、时间的数词表示法1. 表示时刻(1)整点用“o clock ” ; (5: 00 读作 five o clock 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
7、 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-six 4. 表示年代,用 the + 年代 + s/ s 在 20 世纪 30 年代: in the 1930 s 或 in the 1930s 5. 表示世纪,用 the + 序数词 + century ,或者 the + 整百
8、 + s/s 20世纪:the 20th century 或 the 1900 s/ 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 ;121:one and a half 2. “ 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 h
9、our 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米精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 2 页,共 7 页 - - - - - - - - - - 学习资料收集于网络,仅供参考学习资料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.
10、03-one point o three 4)10.25 -ten point two five / 1.03-one point o three 4)百分数:用基数词 + percent 表示50%-fifty percent ;3% - three percent 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 3 页,共 7 页 - - - - - - - - - - 学习资料收集于网络,仅供参考学习资料数词习题精选1. Which number is wrong? _. ()A. Ninety B
11、. Ninteen C. Ninth D. Nineteenth 2. -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; ninth 3. There are _ students in our school. ()A. four hundred and forty five B. four hundred and forty five C. four hundred
12、s and forty five D. four hundred and forty five 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 D. four thousands a hundred and twenty-three 5How do you say 15,858 in English?
13、()A. Fifteen thousands, eight hundred and fifty-eight B. Fifteen thousand, eight hundreds and fifty eight. C. Fifteen thousand, eight hundred and fifty-eight D. 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. Fourth 7
14、. The students went out of the room_. ()A. one by two B. one by one C. two by another D. one by the other 8. 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 half C. one
15、and half a month D. a month and half 10. It took me _ to find out the key to the drawer. ()A. one and half hours B. one and a half hours C. one and a half hour D. one and half hour 11. Do you think there is any room for us _ ? ()A.two B. the two C. second D. the second 12. Which of the following is
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