Unit1 Grammar公开课

twenty-one ____________ first ____________ twenty-two second ____________ third twenty-three ____________ one hundred th ____________ one thousand th
口诀： 若是碰到几十几(twenty-one )，只变个位就可以。(twentyfirst)
Christmas is on
the twenty-fifth
of December.
知识探究2 序数词的用法 1)表示顺序。序数词表示顺序时，其前要加定冠词 the，其后接单数名词。 例：The second picture is very beautiful. 第二幅图很美。 2)表示日期、楼层、位置等。 例： 7月6日表示 July 6th
Unit1 Dream homes
Grammar
Cardinal numbers 基数词 Cardinal numbers 基数词 numbers
Ordinal number 序数词
What number is it like? It looks like a “zero”.
Let’s count from 0 to .......
基数词的构成
1)1到12, 独立成词。 2)13到19,Baidu Nhomakorabea由3至9 + teen构成。 3)20到90, 以ty结尾。
4)21到99， 两位数，十位与个位之间有 “－”。
5)101到999，三位数，百位与十位/个位之间加and。 6)1, 000以上数目,从右向左每三位用“，”分开，分别读 为thousand , million, billion。
3.I am one hundred and two Today is the one hundred and second Today is my one hundred and second
years old . birthday for me birthday.
Summary
1. Words and phrases hundred, million, thousand, billion, foot, area, on the group floor…
thousands, millions, billions+of ”结构。 Thousands of visitors come to Hangzhou in June every (
year. )1. Our school is not very big. There are only ____students. A. nine hundreds of B. nine hundred C. nine hundreds D. nine hundred of
Read the numbers in the sentences.
1. People from about 180 countries and areas live in New York. one hundred and eighty
2. The CN Tower is 1,815 feet tall. one thousand eight hundred and fifteen
100
20到90, 18 以ty结尾。 19
eighteen
22
one hundred
nineteen
23
13到19, 由3至9 + teen构成。 twenty-three twenty-one twenty-two 两位数，十位与个位之间有 连线“－” twenty thirty forty fifty sixty seventy eighty ninety
10, 000, 000, 000
billion
(十亿)
million
Can you say the following numbers?
4,056 four thousand and fifty-six 23,813 twenty-three thousand eight hundred and thirteen 567,110 five hundred and sixty-seven thousand one hundred and ten 6,425,200 six million four hundred and twenty-five thousand two hundred
口诀： 整十y变ie, 然后再加th
30 __________ thirty ieth 50 __________ fifty ieth 70 __________ seventy ieth 90 __________ ninety ieth
Odinal numbers(序数词)
21 22 23 100 1,000
1, 000
one thousand one million
1, 000，000
1, 000，000，000 one billion十亿
1, 000以上数目,从右向左每三位用“，” 分开，分别读为thousand , million, billion。
thousand
hundred
Can you find the rules?
1 __________ one first three third 3 __________ 5 __________ five fifth 7 __________ seven th 9 __________ nine th
口诀： 一 、二、三特殊记，词尾字母t, d, d, （first, second, third ） 八去t , 九去e , ( eight, ninth)
Learn to say these numbers
132 (one hundred and thirty-two) 102 (one hundred and two)
读三位以上的数词时，要在十位前加“and” 如果十位为0则在个位前加“and”
Can you read these large numbers ?
6. Tokyo, the capital of Japan, has over 13,000,000 people.
thirteen million
where do we use cardinal numbers ?
知识探究1 基数词的用法
1)表示名词量的多少； 例：twenty-five desks 2)表示年龄、价格、时间、年代、顺序等； 例： She is fifteen years old. at five/ in the 1960s
3)表示各种车牌、门牌和电话号码等；
例：Room 5 4)表示各种数量或数的加、减。
Ordinal numbers 序数词
Odinal numbers(序数词)
zero 0 ____________ 2 ____________ two second 4 ____________ four th 6 ____________ sixth 8 ____________ eight h
注意
① 当hundred ,thousand ,million, billion前面有具体数词 时，用单数； There are two hundred students in Grade 7。 There are about seven million people in Yancheng.
②当表示“上百、上千、上万”，要用“hundreds,
Odinal numbers(序数词)
10 ____________ tenth 12 ____________ twelve fth 14 ____________ fourteenth 16 ____________ sixteenth 18 ____________ eighteenth
口诀： f 来把ve 替( fifth, twelfth)
3. Red Square in Moscow is about 91,000 square metres in size.
ninety-one thousand
4. France has an area of over 260,000 square miles. two hundred and sixty thousand 5. There are about 8,000,000 people living in London. eight million
基数词变序数词的规律
基变序，有规律，结尾字母th。
一二三，特殊记，结尾字母t, d, d th从四起，
八去t，九去e, f来把ve替
整十y变ie，然后再加th；
如果遇到几十几，只变个位就可以。
Complete the sentences with the correct floor numbers.
There are seven days in a week. Wednesday is the fourth day.
There are twelve months in a year. August is the eighth month.
当序数词前有人称代词时，省略the
one hundred and two I am years old . Today is the one hundred and second birthday for me Today is my one hundred and second birthday.
20 30 40 50 60 70 80 90
one“hundred” yuan
two“hundred” yuan
three“hundred” yuan
91 (ninety-one) 33 (thirty-three) 45 (forty-five)
82 (eighty-two)
个位和十位之间要加连字符“－”
11 __________ eleven th thirteenth 13 __________ 15 __________ fifteen th 17 __________ seventeenth 19 __________ nineteen th
Odinal numbers(序数词)
twenty ieth 20 ____________ 40 ____________ forty ieth 60 ____________ sixty ieth 80 ____________ eighty ieth
0
1 one 6 six 11 eleven
2 two 7 seven 12 twelve
3 three 8 eight
4 four 9 nine
zero
5 five 10 ten
Let’s count from 0 to .......
13 17 seventeen
21
14
15
16
thirteen fourteen fifteen sixteen
基数词与序数词区别
1.There are seven days in a week. Wednesday is the fourth day. 2.There are twelve months in a year. 讨论：基数词表数量 August is the eighth month.
序数词表顺序
5. Ricky lives on the ________ ninth floor.
6. Wilson lives on the _________floor. twelfth
Our classroom is on the first
floor.
The second star is Lu Han.
1. Elsa lives on the _________ seventh floor. 2. Ivan lives on the __________ fifteenth floor. 3. Mary lives on the ________ fourth floor. second floor. 4. Peter lives on the ________