数词的用法

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基数词的用法
1.表时间 —1) 钟点时间
wk.baidu.com时间类型
整点
表示在几点钟用介词 at
例
1:00
表示法
基数词（+ o’clock)
读法
几点过几分 30 分钟
几点差几分 15分钟 =一刻钟 简化法
分钟 + past +小时 half + past + 小时
分钟 + to +小时
in the 1830s 在十九世纪三十年代 写作 ____________________
1.It is not rare in _____ that people in ____ fifties are going to university
c for further education.
A. 90s, the C. 90s, their A. the three grade C. Grade Three
常考习题
选择题 1. ------- When was he born? D -------- He was born _________. A. in 1988 June 6 B. on June 6,in 1988 C. in June 6 , 1988 D. on June 6 ,1988 A 2. The library in the school isn't large .There are only _____books in it. A. six thousand, five hundred and forty-one B. six thousand and five hundred and forty-one C. six thousands five hundred forty and one D. six thousand , five hundreds and forth one 3. Athough I failed four times , my father encouraged me to try a D _____time. A . two B. four C. third D. fifth
C
B . D.
Forty ,forty Fortieth, forthieth
数词的用法10 —加减乘除
1. “加”用plus：[plʌs] ，and或add表示 How much is two plus three? It is five． Two and three is equal to five． 2. “减”用 minus：['mainəs] How much is ten minus six? 3. “乘” times或者multiply['mʌltiplai] 3X4＝? How much is three four? 4. “除”用divide的过去分词形式表示 16÷4=? How much is sixteen divided by four?
基数词的用法8 — 编号
一般编码用 207房 三年级一班 第五部分 第一课 3 号汽车 第一中学 名词 + 基数词 Room 207 Class One Grade Three Part five = the fifth part Lesson one = the first lesson Bus No.3 = the No.3 bus No. 1 Middle School
2:10 3:30
4:40 5:15 6:45 7:50
one o’clock ten past two
half past three twenty to five a quarter past five a quarter to seven seven fifty
a quarter
按顺序读基数词
2) 数词表示年 月 日 英语年月日的顺序：月 日，年 a. 在 2011年5 月1号 写作 ：on May 1(st ) , 2011 读作： on the first of May, two thousand and eleven 或 on May the first, two thousand and eleven b.在1989年9月 on+日 写作 ： in September, 1989 on+月.日 on+年.月.日
基数词的用法--表示数量
1.
具体数字+
hundred thousand million billion
(表示具体数字)
2. hundreds thousands millions billions
+ of+复数名词
(表示概数)
(数以…… 计)
二 序数词的构成
1st 2nd 3rd fourth 5th sixth seventh 8th 9th first second third 4th fifth 6th 7th eighth ninth nine
A 4. The Olympics Games are held ____________. A. every four years B. every four year C. every fourth years D. every four-year
5. The yellow river is ____in China. It goes through many A cities in China. A. the second longest river B. the longest scond river C. the second longest rivers D. the longest scond rivers
数词的用法7 — 分数：
____ C of the land in that district _____ covered with trees and grass. A. Two fifth, is B. Two fifth, are
C. Two fifths, is
D. Two fifths, are
A比B（宽，大，长）倍数
1 5 2 7 1 4 3 4 1 3 3
分子 用基 分子 基数词 数词， one fifth 分母 分母 序数词 用序 分子 ﹥ 1 two sevenths 数词， 分母 + s 当分 分子 a 子超 a quarter 过“1” 分母 quarter 时， 1 a half three quarters 分母 2 用复 基数词 + and + 分数 three and one third 数。
② He came to China ____. A. at the age of 20 B. when he is 20 C. at age of 20
基数词常与名词构成的合成词在句中 作定语，中间要用连字符 “-”，这个 名词只用单数形式． a seven-day holiday
a three-year-old girl
注：通常序数词前面要加定冠词 the；但出现不 定冠词a或an时，则表示“再一”，“又一”。 Can you give me a second time．
常见钱币单位
人民币 RMB：yuan 英镑 GBP： pound(s) 美元 USD: dollar(s) 欧元EUR: euro（s）
[ˈjʊərəʊ]
二 序数词的构成
21 twenty - first 21st 22 twenty- scond 22nd 23 twenty- third 23rd 24 twenty-fourth 24th ……………………………………….
练一练
一 读出下列数字 79 103 999 1,302 6,896,203 第九 第四十 第五十二 第八十六 第三百零三 _____________ the three hundred and third
6. In our school more than _____boys ______like English. A A. two fifths ; don't B. two fives don't C. two fifths doesn't D. scond five doesn't 7. The car cost me _____dollars. A A. eight thousands B. eight thousand of C. eight thousands of D. thousand of 8. The war took place _________. C A. 1720s B. 1720's C. in the 1720s D. the 1720 9. I got a beautiful bike on ______birthday. I like it very D much. A. fifteenth B. fifteen C. my fifteen D. my fifteenth
基数词的用法5 ：计量
① The river is about ____. A. 6,000 meters long B. 6,000-meters-long C. 6,000-meter-long be + 数词 + 量词 + 形容词
基数词的用法6：倍数
一倍 三倍 once，两倍 twice， three times (三倍或以上： 基数词＋times)
This box is five times as big as that one. =This box is four times bigger than that one. ① A + be + 倍数 + as +adj.原+ as +B.
A是B的 …倍…
② A + be + 倍数 + adj.比+ than +B.
at the age of +年龄： 在几岁的时候
基数词的用法4 — 年龄
① The winner is ___. He is an ___ boy . A. eight-year-old; eight years old B. eight years old; eight-year-old C. eight-years old; eight-year-old
in+月 in+年 in+年.月 in+季节
基数词的用法 2：百分数：
80 % 基数词 + percent（%）
基数词的用法3： 小数：
3.78
three point seven eight
小数点
数词的用法4 — 年龄：
1）.表示十几岁用teens指从13岁到19岁。 在某人十几岁时： in one’s teens. 2）.表示 “几十岁”；用 in one’s + 整十数词复数的复数 in one’s thirties 表示在某人三十几岁时 （30—39岁）。 in his fifties 在他五十多岁时，写作______________ 3）18岁：eighteen years old 4）一个十八岁的男孩：an 18-year-old boy 5）
B. the 90s, / D. the 90s, their B. Grade Third
2. Jack is now in _____. C
3.---Peter ,how old is your father this year? ----_______. And we just had a party for his ______birthday last week A. Fortieth , forty C. Forty , fortieth
基数词也可以表示顺序。 the first lesson——Lesson One
数词的用法9 —世纪年代
1）. in the +数词的复数 ，意为 在· · · · · · 年代， 如:in the nineties 在九十年代 可写作：in the 90s 2）. in the+序数词+century,意为在……世纪 如：在19世纪 in the nineteenth century
基数词的读法
1、百位和十位间用 and 连接, 十位和个位间用 - 连接 321 three hundred and twenty-one
2、右往左数,三位一组,逗号隔开.依次是 thousand(千) 1，000 million (百万) 1，000,000 billion (十亿) 1,000,000,000
数词
• 数词分为基数词和序数词。
一 基数词的构成
1 one 11 eleven 2 two 12 twelve 3 three 13 thirteen 4 four 14 fourteen 5 five 15 fifteen 6 six 16 sixteen 7 seven 17 seventeen 8 eight 18 eighteen 9 nine 19 nineteen 10 ten 20 twenty 21 twenty-one 30 thirty 40 forty 50 fifty 60 sixty 70 seventy 80 eighty 90 ninety 100 one/a hundred