2016高考专题复习-数词.ppt

1、高考英语语法复习： 数词 Yoyo,数 词,基数词,序数词,数量,顺序,表示数目和顺序的词叫数词。,1. If a = 4, b = 5, whats the answer to the question “a + 2ab + 1=?” _. A. Forty-fifth B. Forty-five C. Twenty-three D. One hundred and twenty-one,【解析】基数词表示人或事物的数量，而序数词表示人或事物的次序。,考点例析,2. There are 60 students in my class and 44 of them use weibo very

2、 often. 44? That means about _ of your classmates are weibo users, right? A. half B. one third C. two thirds D. three quarters 【解析】表达分数时，分子用基数词，分母用序数词；分子大于1时，分母要在序数词后面加-s。在表达四分之几时，要用quarter与基数词搭配来表示(如：四分之三 three quarters)。表达二分之一时通常用one half或a half表示。,3. There are over _ students in their school. A.

3、hundreds B. nine hundreds C. hundreds of D. nine hundred 【解析】当基数词与hundred, thousand, million, billion连用，表示具体的“几百、几千、几百万、几十亿”时，这些词后不加-s。如：two hundred books, three thousand trees, four million people, five billion seconds。,4. After the Asian Games, _ people came to Guangzhou for a visit during holiday

4、s. A. thousand B. thousands of C. five thousands D. thousand of 【解析】 当hundred, thousand, million, billion后面加-s并与of 连用时，意为“数以计的”，表达的是约数的概念，前面不能再加具体的数字。,基数词的构成 112,独立成词。 one two three four five six seven eight nine ten eleven twelve 13-19,由39 + teen构成。 14fourteen 16sixteen 17seventeen 19nineteen 特殊拼写:

5、 13 thirteen 15fifteen 18eighteen,2090,以-ty结尾。 20twenty 30 thirty 40forty 50fifty 60 sixty 70 seventy 80 eighty 90ninety 2199,两位数,十位与个位之间“”。 21 twentyone 55 fiftyfive 99 ninetynine, 101999，三位数，百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three 1，000以

6、上数目,从右向左每三位用“，” 分开,分别读为thousand , million, billion 。,6,500,431,7,29,billion,million,thousand,hundred,and,基数词的用法 表示具体数目,hundred, thousand, million不用复数。表示不确定数目,用复数。即hundreds of(数百), thousands of(数千), millions of(数百万)+ 名词复数, 可以用many/several修饰，但不能与具体数目连用。 Our country has a population of 1,300 million pe

7、ople. After the war, thousands of people became homeless.,“几十”的复数形式可以表示： 几十多岁 in + ones + 数词复数 年 代 in + the +数词复数 He died in his forties In the nineties, most people go to work by bike. “基数词+名词” 的合成形容词作定语, 中间有连字符“”,当中的名词用单数。 a 3 year old girl a seven-day holiday 表计量 “基数词+度量单位+形容词” The classroom is 7

8、 meters long, 6 meters wide and 3 meters high., 表示时刻 (介词用at) 1)顺读法先时后分,“几点几分” 9:30 nine thirty 6:21 six twenty-one 2)逆读法先分后时 a. 表示“几点过几分”,半小时以内, 介词用past, 分钟数+past +钟点数。 10:10 ten past ten 8:20 twenty past eight,b. 表示“几点差几分”, 半小时以上, 介词用 to, 60减原分钟+ to + (下一个)钟点数。 9:50 ten to ten 7:40 twenty to eight

9、3)15分钟：a quarter 30分钟：a half 9:15 a quarter past nine 12:30 half past twelve,序数词的构成 13, first, second, third 。 419, 相应基数词+th, 特殊拼写: fifth, eighth, ninth, twelfth。 2090, y变成ie +th,如twentieth。 2199, 只把个位的基数词变成序数词，如twenty-first。 序数词缩写数字最后两字母， 如 1st, 2nd, 3rd ,4th,序数词的用法 序数词作定语，前面要加the； The first truck

10、is carrying a food basket John lives on the fifteenth floor 有时加a/an，“再一”，“又一” 的意思。 We ll have to do it a second time Shall I ask him a third time？ They had a second child in 1988.,编号表示法 编号在前，名词在后，用序数词，前面有the 编号在后，名词在前，用基数词，注意首字母大写 房间号码和电话号码要一个一个分别读。 第一课 The First Lesson（在句子中不大写） Lesson One 第32页 the

11、thirty-second page Page 32 / Page Thirty-two 第305房间 Room 305 第12路公共汽车 Bus No.12,分数表示法 分子用基数词，分母用序数词。 分子大于1时，分母加-s。 1/4 one-fourth a (one) quarter 3/4 three-fourths three quarters 2/3 two-thirds 1/2 a (one) half 半年 half a year 半小时 half an hour 一年半 one and a half years one year and a half,年份、日期表达法 年用基

12、数词表示,两位一读,介词用in； 日用序数词表示,介词用on。 1999 nineteen ninety-nine 1949年10月1日 读作: October (the) first, nineteen forty-nine （月-日, 年） the first of October, nineteen forty-nine （日-月, 年）,写作: October 1st,1999 (日用缩写, 月-日-年) October 1, 1999 (日用数字) 1st October,1999 (日-月, 年) 表示“在世纪”, 用序数词。,在20世纪,写作：in 20th century,读作

13、：in the twentieth century,1) 用 times表示。 My room is three times as large as yours. 我的房间是你的三倍大小。 如果表示“是两倍数”,一般用 twice。 My room is twice as large as yours. 我的房间是你的两倍大小。,倍数的表达方法,倍数表达法的句型： .倍数 + as + 形容词或副词 + as,2) 用-%表示。 The collection of our school library is 200% up compared with 1998. 我们学校图书馆藏书量与1998

14、年相比增 长了一倍。,常见的含数词的短语： by ones and twos 三三两两地 second to none 不比任何人差，首屈一指的 one by one 一个一个地,数词在固定短语中的运用,1. Im at _(七上八下的）about what to do. 2. Lets divide it _（两半）. 3. _ （十有八九）the train will be late.,1. The hero of the story is an artist in his _. A. thirtieth B. thirty C. thirtys D. thirties 2. It is

15、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,I. Multiple choice.,3. _ 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 4. _ p

16、eople in the world are sending information by E-mail every day. A. Several million B. Many millions C. Several millions D. Many million,5. Americans eat _ vegetables per person today as they did in 1910. A. more than twice B. as twice as many C. twice as many as D. more than twice as many 6. He did

17、it _ it took me. A. one-third a time B. one-third time C. the one-third time D. one-third the time,7. Many students signed up for the _ race in the sports meeting to be held next week. A. 800-meter-long B. 800-meters-long C. 800 meter length D. 800 meters length 8. It is reported that the United Sta

18、tes uses _ energy as the whole of Europe. A. as twice B. twice much C. twice much as D. twice as much,9. She went to the bookstore and bought _. A. dozen books B. dozens books C. dozen of books D. dozens of books 10. It is reported that the floods have left about _ people homeless. A. two thousand B

19、. two-thousands C. two thousands D. two thousands of,II. Fill in the blanks with the suitable words.,1. Efforts to reform the system began in the early _ (twenty) century and met with some success in the decades that followed. 2. The boss said we had only three days to finish the work. Dont worry. We have already got through two _ (three) of it.,thirds,twent