Module 2 Unit 3 We are going to have an English test 基数词如何变成序数词课件(共18张PPT)

(共18张PPT)
基数词如何变序数词
Module 2 Unit 3
We are going to have an English test
We use numbers almost every day.
No.11 Bus
No.28 Shangwuneihuan Road
No.21 player
Page 28
10 yuan
Let’s read from 0 to 9.
0 1 2 3 4 5
zero one two three four five
6 7 8 9
six seven eight nine
Can you read the phone numbers
Millie 5553 2901 _________________________
Amy 5558 6390 _________________________
Daniel 5554 3986 _________________________
Sandy 5552 0928 _________________________
Kitty 5556 7395 _________________________
me 5557 2118 _________________________
five,five,five,eight;six,three,nine,o
five,five,five,four;three,nine,eight,six
five,five,five,two;o,nine,two,eight
five,five,five,six;seven,three,nine,five
five,five,five,seven;two,one,one,eight
five,five,five,three;two,nine,o,one
Let’s read from 10 to 100.
10 11 12
ten eleven twelve
13 14 15 16 17 18 19
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
20 30 40 50 60 70 80 90
twenty thirty forty fifty sixty seventy eighty ninety
100
one hundred
21 22 23
twenty-one twenty-two twenty-three
Can you read the numbers
102 (one hundred and two)
139 (one hundred and thirty-nine)
13 (thirteen)
45 (forty-five)
33 (thirty-three)
82 (eighty-two)
91 (ninety-one)
14 (fourteen)
Can you read the numbers
911
715
422
554
218
nine hundred and eleven
seven hundred and fifteen
four hundred and twenty-two
five hundred and fifty-four
two hundred and eighteen
基数词
one
two
three
first
second
third
序数词
基数词
one
two
three
four
five
six
seven
eight
nine
ten
twelve
twenty
twenty-one
twenty-two
序数词
first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
twelfth
twentieth
twenty-first
twenty-second
八去t九去e，字母f代ve
若是碰到几十几，只变个位就可以
整十变化要牢记，ty变成tie
一二三要全变，其余th加后面
first
second
third
eighth
ninth
fifth
twelfth
twentieth
fortieth
twenty-first
twenty-second
基数词变序数词
基数词变序数词规律
一二三要全变，其余th加后面;
八去t九去e，字母 f 代 ve；
整十变化要牢记，ty变成tie；
若是碰到几十几，只变个位就可以。
基数词变序数词
表示顺序的数词叫序数词。 基数词变序数词
的规则是：
（1） 大部分数词在词尾加th ：
如: fourth（第四） thirteenth（第十三）
hundredth（第一百）
（2） 表示整十的基数词， 变 y为ie， 再加 eth;
如：twentieth 第二十 eightieth第八十
（3） 特殊的序数词有: 第一 first, 第二 second， 第三 third， 第五 fifth, 第八 eighth, 第九 ninth ，第十二 twelfth
(4) 要把一个“ 几十几” ， “ 几百几” 的基 数词变成序数词，只需把个位数变成序数词。
如: 32---thirty-second
256--- two hundred and fifty-sixth
(5) 在表示编号的东西时，可以用基数词表示， 也可用序数词表示
如: the first lesson = Lesson One
the sixth grade = Grade Six
The first month of the year is
second
third
fourth
fifth
sixth
eleventh
seventh
eighth
ninth
tenth
twelfth
February
March
April
May
June
July
August
September
October
November
December
January.
写出下列日期的英文表达法
1. 3 月12日 2. 8月8 日
3. 1月5日 4. 7月20 日
5. 12月1日 6. 9月9日
7. 4月3日 8. 11月2日
9. 2月14日 10. 5月30 日
11. 6月23日 12. 10月21日
March 12th
August 8th
January 5th
July 20th
December 1st
September 9th
April 3th
November 2nd
February 14th
May 30th
June 23rd
October 21st
Read the dates:
Writing(写法） Reading （读法）
January 1st
March 8th
August 2nd
September 10th
July 3rd
February 12th
October 20th
December 25th
January (the) first
March (the) eighth
August (the) second
September (the) tenth
July (the) third
February (the) twelfth
October (the) twentieth
December (the) twenty-fifth
4. 序数词常用作名词的定语，但当名词前面已有物主代词等限定词时，则不能再用the。
如：The second boy likes playing baseball.
序数词的用法：
1. 序数词前一般要加定冠词the。
如：The first boy is my brother.
2. 表示编号时，常把基数词放在名词后面来表示 顺序，相当于“the + 序数词 + 名词”。
如： lesson five = the fifth lesson
3. 表示分数时，基数词作分子，序数词作分母， 当分子大于1时，分母要用复数。
如：1/4 one fourth; 2/5 two fifths