《数词的用法》PPT课件.ppt

数词,数词分为基数词和序数词。,一 基数词的构成 1 one 11 eleven 20 twenty 2 two 12 twelve 21 twenty-one 3 three 13 thirteen 30 thirty 4 four 14 fourteen 40 forty 5 five 15 fifteen 50 fifty 6 six 16 sixteen 60 sixty 7 seven 17 seventeen 70 seventy 8 eight 18 eighteen 80 eighty 9 nine 19 nineteen 90 ninety 10 ten 100 one/a hundred,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,three hundred and twenty-one,321,2、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) 1,000,000,000,1. hundred thousand (表示具体数字) million billion 2. hundreds thousands (表示概数) millions (数以 计) billions,基数词的用法-表示数量,具体数字+,+ of+复数名词,二 序数词的构成,1st 2nd 3rd fourth 4th 5th sixth 6th seventh 7th 8th 9th,first,second,third,fifth,eighth,ninth,nine,二 序数词的构成 21 twenty - 21st 22 twenty- 22nd 23 twenty- 23rd 24 twenty-fourth 24th .,first,scond,third,练一练 一 读出下列数字 79 103 999 1,302 6,896,203 123,234,438,209 第九 第四十 第五十二 第八十六 第三百零三 _,the three hundred and third,基数词的用法,one oclock,ten past two,half past three,twenty to five,a quarter past five,a quarter to seven,seven fifty,表示在几点钟用介词 at,1.表时间 1) 钟点时间,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 写作 ： in September, 1989,on+日 on+月.日 on+年.月.日,in+月 in+年 in+年.月 in+季节,80 %,基数词 + percent（%）,3.78,three point seven eight 小数点,基数词的用法 2：百分数：,基数词的用法3： 小数：,1）.表示十几岁用teens指从13岁到19岁。 在某人十几岁时： in ones teens. 2）.表示 “几十岁”；用 in ones + 整十数词复数的复数 in ones thirties 表示在某人三十几岁时 （3039岁）。 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）,in his fifties,数词的用法4 年龄：,at the age of +年龄： 在几岁的时候, 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 He came to China _. A. at the age of 20 B. when he is 20 C. at age of 20,基数词的用法4 年龄,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, The river is about _. A. 6,000 meters long B. 6,000-meters-long C. 6,000-meter-long,基数词的用法5 ：计量,be + 数词 + 量词 + 形容词,一倍 once，两倍 twice， 三倍 three times (三倍或以上： 基数词times),基数词的用法6：倍数,This box is five times as big as that one. =This box is four times bigger than that one., A + be + 倍数 + as +adj.原+ as +B. A是B的 倍 A + be + 倍数 + adj.比+ than +B. A比B（宽，大，长）倍数,1 5,分子 基数词 分母 序数词,one fifth,2 7,分子 1 分母 + s,two sevenths,1 4,分子 a 分母 quarter,a quarter,3 4,three quarters,1 2,a half,1 3,three and one third,3,基数词 + and + 分数,数词的用法7 分数：,分子用基数词，分母用序数词，当分子超过“1”时，分母用复数。,_ 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,C,一般编码用 名词 + 基数词 207房 三年级一班 第五部分 第一课 3 号汽车 第一中学,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,基数词的用法8 编号,基数词也可以表示顺序。 the first lessonLesson One,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 在十九世纪三十年代 写作 _,in the 1830s,数词的用法9 世纪年代,1.It is not rare in _ that people in _ fifties are going to university for further education. A. 90s, the B. the 90s, / C. 90s, their D. the 90s, their 2. Jack is now in _. the three grade B. Grade Third C. Grade Three 3.-Peter ,how old is your father this year? -_. And we just had a party for his _birthday last week Fortieth , forty B . Forty ,forty C. Forty , fortieth D . Fortieth, forthieth,c,C,C,1. “加”用plus：pls ，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：mains How much is ten minus six? 3. “乘” times或者multiplymltiplai 3X4? How much is three four? 4. “除”用divide的过去分词形式表示 164=? How much is sixteen divided by four?,数词的用法10 加减乘除,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,人民币 RMB：yuan 英镑 GBP： pound(s) 美元 USD: dollar(s) 欧元EUR: euro（s）,常见钱币单位,jr,常考习题 选择题 1. - When was he born? - He was born _. A. in 1988 June 6 B. on June 6,in 1988 C. in June 6 , 1988 D. on June 6 ,1988 2. The library in the school isnt 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 _time. A . two B. four C. third D. fifth,D,A,D,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 cities in China. A. the second longest river B. the longest scond river C. the second longest rivers D. the longest scond rivers,A,A,6. In our school more than _boys _like English. A. two fifths ; dont B. two fives dont C. two fifths doesnt D. scond five doesnt 7. The car cost me _dollars. A. eight thousands B. eight thousand of C. eight thousands of D. thousand of 8. The war took place _. A. 1720s B. 1720s C. in the 1720s D. the 1720 9. I got a beautiful bike on _birthday. I like it very much. A. fifteenth B. fifteen C. my fifteen D. my fifteenth,A,C,D,A,10 Five minus two_three. A. was B. are C. were D. is,D,102 6500 123456789 第一 第五 第二十一 1/3 2/7 9.8 2：00,作业：,5：30 5:06 7:58 70 69 在1983年 在20世纪50年代 在1998年4月1号 在9月 在10月1号,January1月 Jan. February2月 Feb. March3月 Mar. April4月 Apr. May5月 May. June6月 Jun. July7月 Jul. August8月 Aug. September -9月 Sept. O