1、数 词,学习目标一 基数词和序数词的构成。 二 基数词的用法。 三 序数词的用法。,数词概述,1.表示数目多少或顺序先后的词叫数词。数词分为基数词和序数词。2.基数词表示数目或数量多少。序数词表示顺序和等级。,一 基数词和序数词的构成,1.one 2.two 3.three 4.four 5.five 6.six 7.seven 8.eight 9.nine 10.ten,11.eleven 12.twelve 13.thirteen 14.fourteen 15.fifteen 16.sixteen 17.seventeen 18.eighteen 19.nineteen 20.twenty
2、,10.ten 20.twenty 30.thirty 40.forty 50.fifty 60.sixty 70.seventy 80.eighty 90.ninety,first second third fourth fifth sixth seventh eighth ninth tenth,eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth,一二三，特殊记 f 要把 ve 替 八减 t ,九去 e 结尾 th 不忘记 若想变为几十几
3、， 只变个位就可以。,基数词变为序数词：,二 基 数 词 考 点,1.有s没数字，有数字没s: hundred,thousand, million,billion 2.in his forties. In ones+年龄复数in the 1930s. In the +年代复数 3.时间的表示 (1) 2：25 two twenty-five (2) 8: 20 twenty past eight6: 50 ten to seven (3) a quarter=15 minutes a half =30 minutes 8:30 half past eight 8:15 a quarter pa
4、st eight 7:45 a quarter to eight,4.数的读写(1) 数的读法1,987,654,321 one billion, nine hundred and eighty-seven million, six hundred and fifty-four thousand, six hundred and twenty-one1234 1001 1100 1034(2) 数的写法 三位一逗,三 序 数 词 考 点,1.年份、日期的表示日期用序数，年份用基数1949.10.1 October 1st , 1949年份的读法 ：两位一组 1999 1900 1909 200
5、8 2.分数的表示：（1）分子基，分母序；分子大于1,分母加s 2/5(2) a quarter=1/4 three quarters=3/4 a half = 3. 编号的表示Lesson One =the first lesson Class Three= the third Class结构: 名词+基数词 或 the+序数词+名词4.序数词缩写 取后两位,基础练习1. 读出下列数字 79 999 103 1,302 1,987,654,321 第九 第四十 第五十二2. 写出下列数字.(1)two thousand six hundred and fifty-nine _(2)eight
6、een million two hundred and thirty thousand and sixty- eight _,2659,18,230,068,3.数词表示编号 Lesson One =the first lesson 结构:名词+基数词 或 the+序数词+名词 如：Page5= Room 21 4. 表示年龄 a.表示十几岁用teens指从13岁到19岁。在某人十几岁时： in ones teens. b.表示 “几十岁”；用 in ones + 数词复数in ones thirties 表示在某人三十几岁时 ，指从30岁到39岁。 在他五十多岁时写作c.18岁：eighte
7、en years oldd.一个十八岁的男孩：an 18-year-old boy=a boy of 18,in his fifties,the fifth page,the twenty-first room,1.It is not rare in _ that people in _ fifties are going to university for further education. A.19 90s, the B. the 1990s, / C. 1990s, their D. the 90s, their 2. Jack is now in _. the three grade
8、 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,D,C,C,综合演练,3. _ of the land in that district _ covered with trees and grass. A. Two fifth, is
9、 B. Two fifth, are C. Two fifths, is D. Two fifths, are4. Five minus two_three. A. was B. are C. were D. Is,C,分数和百分数作主语时，关键是看其后的名词来决定其谓语动词的数。该题中的是不可数名词，所以动词需用单数。,D,中考演练 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. Athoug
10、h I failed four times , my father encouraged me to try a_time.A . two B. four C. third D. fifth3. The Olympics Games are held _. A. every four years B. every four year C. every fourth years D. every four-year,D,A,D,4. The yellow river is _in China. It goes through many cities in China.A. the second
11、longest river B. the longest scond river C. the scond longest rivers D. the longest scond rivers 5. In our school more than _boys _like English. A. two fifths ; dont B. two fives dont C. two fifths doesnt D. scond five doesnt 6. The war took place _. A. 1720s B. 1720s C. in the 1720s D. the 1720 7. I got a beatutiful bike on _birthday. I like it very much. A. fifteenth B. fifteen C. my fifteen D. my fifteenth,A,C,D,A,Thank you,
