Unit 1 Dream Homes Grammar课件（21张PPT)

《初中英语》（译林版）七年级下册

Unit 1 Dream homes
Grammar

Cardinal numbers
Ordinal numbers

We use cardinal numbers almost every day. We use them to talk about the numbers of people or things.
表示班级、年级、学校人数等。
表示城市和国家的人口数量等。
表示电话号码、车牌号、门牌号、价格、年份等。
hundred, thousand, million的特别用法：
前面有数词，则不用其复数，如two hundred, five thousand等。表示上百、上千、上百万时，用hundreds of, thousands of , millions of 来表示。
基数词的用法：
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
102 (one hundred and two)
139 (one hundred and thirty-nine)
45 (forty-five)
33 (thirty-three)
82 (eighty-two)
91 (ninety-one)
Can you read the numbers？
100
1,000
10,000
200,000
1,000,000
10,000,000
200,000,000
1,000,000,000
one hundred
one thousand
ten thousand
two hundred thousand
one million
ten million
two hundred million
one billion
/?h?ndr?d/
/?θa?znd/
/?m?lj?n/
9 3 0 5 0 0 4 6 0 7
,
,
,
nine billion three hundred and five million four hundred thousand six hundred and seven
Find out the rule！
4,056= _____ thousand and _______
23,813= _____________ thousand,
___________________________
567,110= ______________________
thousand,____________________

four fifty-six
twenty-three
eight hundred and thirteen
five hundred and sixty-seven
one hundred and ten
The CN Tower is over 1,500 feet tall.
over /'??v?/ prep. 超过
foot 足；英尺（pl. feet)
1 foot = 0.3048 metre
metre (=meter) 米，
/'mi:t?/公尺
Red Square in Moscow
is about 91,000.
square metres in size.
正方形;广场;平方;方格
square /skwe?/

France has an area of over 260,000 square miles. area n.面积
1. People from about 180 countries and areas live in New York.
2. The CN Tower is 1,815 feet tall.

3. Red Square in Moscow is about 91,000 square metres in size.

4. France has an area of over 260,000 square miles.

5. There are about 8,000,000 people living in London.

6. Tokyo, the capital of Japan, has over 13,000,000 people.
one hundred and eighty
one thousand eight hundred and fifteen
ninety-one thousand
two hundred and sixty thousand
eight million
thirteen million
We can use ordinal numbers to order things and events. We use them to talk about dates, floors, positions, etc.
1st = 2nd =

3rd = 4th =

6th = 8th =

7th= 10th=

first
second
third
fourth
sixth
eighth
Rules: 1) 序数词除first, second 和third 外,其他大部分都是由相应的基数次加-th构成的.

twenty---
thirty---
forty---
fifty---
sixty---

twentieth
thirtieth
fortieth
fiftieth
sixtieth
Rules: 2) 以y结尾的整数,把y变成ie,再加th.
3) five,eight,nine,twelve的特殊变化
nine---
eight---
five---

ninth
eighth
fifth


twenty---first
twenty---second
thirsty---ninth
seventy---fifth
Rules: 两位数或两未以上的数,只要把个位数变成序数词.
21

22

39

75
1. Elsa lives on the _________ floor.
2. Ivan lives on the __________ floor.
3. Mary lives on the ________ floor.
4. Peter lives on the ________ floor.
5. Ricky lives on the ________ floor.
6. Wilson lives on the _________floor.
seventh
fifteenth
fourth
second
ninth
twelfth
Wilson
Ivan
Mary
Peter
Ricky
Elsa
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
G
Look, this is Vicky.
She lives in Room 301, Building 30.
You can call her on 13914026782 or
e-mail her at 174541143@qq.com.
She is our first English teacher here.
Birthplace：Shanghai
Birthday: September 9th，1991
Phone number: 1330,2578,888
Salary（年薪）: ￥50,650,000
His dream home: 5 floors, 25 rooms,
a swimming pool, 60metres long,
a garden, hundreds of flowers.
Yang Yang’s profile
Remember the cardinal and ordinal numbers we learned in this lesson.
2. Introduce Yang Yang or your best friend , using as many numbers as you can.
Homework