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1 分数表示法
分数是由基数词和序数词一起表示的。基数词做分子，序数词做分母；当分子大于1时，序数词用复数形式。
three fourths或three quarters
one third或a third
one quarter或a quarter
a half
seven and two thirds
注意： 当分数后面接名词时，如果分数表示的值大于1，名词用复数形式；如果小于1，名词用单数形式。
hours
一个半小时
meter
五分之四米
2 倍数表示法
once一倍/一次
twice两倍/两次
three times三倍/三次
forty times四十倍/四十次
注意： 两倍/两次以上用“基数词+times”表示。
3 百分数表示法
百分数用“基数词+percent”表示。
4 年份表示法
在英语中，年份一般用阿拉伯数字写出，其读写方法有以下几种：
（1）四位数的年份，一般 前两个数 为一个单位， 后两个数 为一个单位，依次按 基数词 读出。
1763年读作：seventeen sixty-three
1818年读作： eighteen eighteen
（2）千年的读法
2000年读作：two thousand
2015年读作：two thousand and fifteen或twenty fifteen
（3）三位数的年份，可以按 基数词 读出，或者 第一个数字 为一个单位， 后两个数字 为一个单位，按基数词读出。
385年读作：three hundred and eighty-five或three eighty-five
（4）两位数或一位数的年份，直接按 基数词 读出。
59 B.C.读作：fifty-nine B.C. （B.C.表示“公元前”）
5 日期 （ 用序数词表示 ）
July 3rd 读作：July the third
November 25th 读作： November the twenty-fifth
December 1st 读作：December the first
注意： “世纪”也用序数词表示。例如：the 20th century 20世纪
6 年代，岁数
=in the 1870s 在19世纪70年代
=in one's seventies 在某人70多岁时
=Jenny was born in the 1990 s .
珍妮出生在20世纪90年代。
=Jenny is in her twenties .
珍妮现在二十几岁。
7 时刻
时刻有两种读法：
一是（顺读）直接读数字，先读钟点数，后读分钟数；
二是（逆读）用介词 past 表示“ 几点过几分 （不超过半小时）”，或用介词 to 表示“ 差几分几点 （超过半小时，还差多少分钟到下一个钟点）”，这时先读分钟数，后读钟点数。
（1）顺读：钟点数+分钟数
2∶00 two o'clock
2∶10 two ten
3∶15 three fifteen
7∶45 seven forty-five
（2）逆读：分钟数+past+钟点数
分钟数≤30
2∶10 ten past two
3∶15 fifteen past three=a quarter past three
4∶20 twenty past four
5∶30 thirty past five=half past five
分钟数＞30 （用公式：“60-分钟”+to+“小时+1”）
6∶40 twenty to seven
7∶45 a quarter to eight/fifteen to eight
8∶50 ten to nine
9∶56 four to ten
注意： 表示“半小时”常用half；表示“一刻钟”常用quarter.
3∶30 读作：half past three或three thirty
6∶45 读作：a quarter to seven或six forty-five
8 编号
用数词表示编号时， 基数词 应放在首字母大写的 名词之后 ，且不需要任何冠词； 序数词 应放在 名词之前 ，且前面要 加定冠词the 。
名词+基数词=the+序数词+名词
Lesson One=the first lesson 第一课
Room 9=the ninth room 九号房间
注意： 房间号码和电话号码一个一个数字读。
Room 203: room two zero three
754 662: seven five four six six two
9 常用数词短语
one by one 逐个地，依次地
two by two 两个两个地
by the dozen 以打计
by the hundred 以百计
in tens 十个十个地
1 基数词记忆规律
基数词不难记，找清规律很容易，十二以内词各异；
十三到十九，后加-teen，莫忘记。
二十三十至九十，整十之后有-ty；
要说“几十几”，中间“-”号别丢弃；
hundred是“一百”，请你记住莫大意。
2 基数词变序数词规律
一二三特殊记，1st，2nd，3rd（first， second， third）；
八去t，九去e，ve要用f替；
遇到y变成ie，最后要加th；
若是碰到几十几，前用基来后用序。
3 分数的表示方法
分子基数词，分母序数词；
分子大于1，分母加s；
分母若为2和4，half和quarter可代替。
数词-小结
新东方名师语音讲解
1. Which of the following is the least?
A. 0.105
B. 0.501
C. 0.015
D. 0.15
2. Please turn to Page_______and take a look at the picture on it.
A. the eightieth
B. eightieth
C. eighties
D. Eighty
3. July 1st of this year is the_______birthday of the CPC （中国共产党）。
A. ninety-five
B. ninetieth-fifth
C. ninetieth-five
D. ninety-fifth
4. He climbed so fast that he reached_______floor in two minutes.
A. nine
B. the nine
C. the ninth
D. ninth
5. Meimei is going to be an older sister. Her parents are planning to have their_______child.
A. one
B. two
C. first
D. second
6. On her_______birthday，she got an iPad as a gift from her father.
A. twelve
B. twelfth
C. the twelve
D. the twelfth
7. — Welcome to Los Angeles. Have you ever been here?
— Sure. I visited this city three years ago so this is my_______time here.
A. first
B. second
C. third
D. fourth
8. — Mum， the beautiful card I made last night is just for your_______birthday.
— Oh， thank you， my dear!
A. forty
B. fourteen
C. fortieth
D. fourth
9. — How many friends will come to your_______birthday party？
— About_______。
A. twelve; twelfth
B. twelveth; twelve
C. twelfth; twelve
10. Li Ming will be_______。 His parents are going to have a party for his_______birthday.
A. sixteen; sixteenth
B. sixteenth; sixteenth
C. sixteen; sixteen
D. sixteenth; sixteen
11. — Hi， Andy! There are_______floors in this building. Which floor do you live on?
— I live on the_______floor.
A. thirty; twenty-second
B. thirty; twenty-two
C. thirtieth; twenty-two
12. The environment here becomes better and better._______birds are coming back.
A. Thousands of
B. Thousand of
C. Thousands
D. Thousand
13. There are_______students in our school.
A. hundreds
B. hundreds of
C. hundred of
14. — Where were you born， Michael?
— I was born in a small village with only three_______people.
A. hundred
B. hundreds
C. hundreds of
15. There are_______tourists visiting the island on May Day every year.
A. two thousand
B. two thousands
C. thousands of
D. thousand of
16. More than two_______trees are planted in our neighborhood every year.
A. hundred
B. hundreds
C. hundreds of
D. hundred of
17. — The 15th Chinese Bridge-Chinese Proficiency Competition will be held this year!
— That's great!_______foreign college students are interested in Chinese learning.
A. Hundred of
B. Thousands
C. Hundred
D. Thousands of
18. — What do you think of the environment here?
— Wonderful!_______of the land_______covered with trees and grass.
A. Two fifths; is
B. Two fifth; is
C. Two fifths; are
D. Two fifth; are
19._______of the students in Class 6 have lunch at school.
A. Two fifth
B. One thirds
C. Three fifth
D. Three quarters
20 . — A recent survey shows that 35 out of 45 students in my class will save their phones first in a fire.
— About_______of the students made such a choice？Life is far more important，isn't it?
A. half
B. one third
C. two thirds
D. three quarters
21. The workers will complete the new bridge in_______。
A. two and a half months
B. two months and half
C. two and a half month
22. It's reported that over eight_______people lost their lives in the earthquake in Nepal this year.
A. thousand
B. thousands
C. thousand of
D. thousands of
23. During May Day holiday， we stayed in a mountain village with_______trees around.
A. thousand of
B. thousand
C. thousands
D. thousands of
24. Two_______students_______to the opening ceremony last Friday.
A. hundreds; were invited
B. hundred; were invited
C. hundreds of; invited
D. hundred of; invited
25. Last year， three hundred English teachers took part in the_______English Training.
A. two-month
B. two-months
C. two months
D. two month
26. It's reported that nearly_______foreign kids joined a British boarding school last year， and one third of them came from China.
A. nine thousand
B. nine thousands
C. nine thousand of
D. nine thousands of
27. The_______biggest earthquake in Nepal （尼泊尔）has killed more than 8， 000people.
A. two
B. second
C. twice
28._______of the land in that district is covered with trees and grass.
A. Fifth two
B. Two fifth
C. Fifth second
D. Two fifths
29._______of the girls will join the summer camp to visit England.
A. Three fives
B. Third fifths
C. Three fifths
30. A_______woman was saved from the ship on June 2nd，2015.
A. 65 year old
B. 65-year-olds
C. 65-year-old
D.65-years-old
1-5 CDDCD
6-10 BBCCA
11-15 AABAC
16-20 ADADD
21-25 AADBA
26-30 ABDCC