Unit 7 What’s the highest mountain in the world? Revision A 1a-2c课件（35张ppt）

(共35张PPT)
初中英语八年级
Unit 7 What’s the highest mountain in the world?
Section A 1a-2c
Unit 7
What’s the highest mountain in the world?
Section A 1a-2c
Learning aims:
1.Talk about geography and nature.
2.Learn the rules of the superlatives with adjectives and adverbs.
3.Love our nature.
World Record—DO YOU KNOW?
What’s the highest mountain in the world?

World Record
Highest mountain
Name
Qomolangma
Height
8,844.43 meters high
Where
In China
World Record—DO YOU KNOW?
What’s the deepest salt lake in the world?

World Record
Deepest salt lake
Name
Caspian Sea
Depth
1,025 meters deep
Where
Between Asia and Europe
World Record—DO YOU KNOW?
What’s the longest river in the world?

World Record
Longest river
Who
The River Nile
What
6,671 kilometers long
Where
In Africa
World Record—DO YOU KNOW?
What’s the largest hot desert in the world?

World Record
Largest hot desert
Name
The Sahara Desert
Size
9,600,000 square kilometers
Where
In North Africa
844

eight hundred and forty-four
Read large numbers
one thousand
one thousand and twenty-five
six hundred thousand



one million




1,000

1,025
600,000


1,000,000

169,800,450

million thousand
one hundred and sixty-nine million

Read large numbers
eight hundred thousand
four hundred and fifty
The Sahara 9,600,000 square kilometers in size
The Caspian 1,025 meters deep

The Nile 6,671 kilometers long
(Nine million six hundred thousand)
(one thousand and twenty-five)
(six thousand six hundred and seventy-one)
Read large numbers
0 . 1
3 . 14
4 . 43


zero point one
three point one four
four point four three
Qomolangma 8,844.43 meters high



point
(eight thousand eight hundred and forty-four point four three)
Read small numbers
Try to answer questions
表示长、宽、高时常用句型：基数词 + 单位词（meter, foot, inch, kilo等）+ 形容词（ long, wide, high, tall）
形容词的最高级及比较级表达最高级含义
最高级：the+ 形容词/副词+ est ...+in/of
Qomolangma is the highest mountain /higher than any other mountain in the world.
The Nile is the longest river /higher than any other river in the world.
The Sahara is the biggest desert / in the world.
The Caspian Sea is /deeper than any other salt lake in the world.
bigger than any other desert
the deepest salt lake
1b Listen and complete the sentences.
1. Qomolangma is ______ than any other mountain in the world.
2. The Sahara is ____________ desert in the world.
3. The Caspian Sea is ____________ of all the salt lakes.
4. The Nile is _________ river in the world.
higher
the biggest
the deepest
the longest
the highest mountain
bigger than any other desert
Practice in pairs like this:
A: What is the highest mountain in the world?
B: Qomolangma.
A: How high is it?
B: It is 8,844.43 meters high.


1c Use the information in 1a &1b to make conversations.
Practice in pairs:
A: What is the ... in the world?
B: ...
A: How ... is it?
B: It is ...high/deep/in size...
1c Use the information in 1a &1b to make conversations.
1,025 meters deep
9,600,000 km? in size
8,844.43 meters high
6,671 kilometers long
How much do you know about China?
China has the biggest population in the world.
It’s a lot bigger than the population of the United States.
Population (as of Saturday, April 4, 2020)
China 1,410,408,308
The United States 330,536,464
Canada 37,662,126
China is one of the oldest countries in the world.
It’s much older than the United States.
History
China Over 5,000 years old
The United States Not even 300 years old
one of+形容词最高级+名词复数
表示...之一
How much do you know about China?
Listen and number the facts[1-4]in the order you hear them.
__The Yangtze River is about _____ kilometers long and the Yellow River is ______ kilometers long.
__China has the biggest population in the world. It’s a lot bigger than the population of the US.
__China is over _____ years old. It has a much longer history than the US. The US is not even ___ years old.
__China is almost as big as the US, and it is the biggest country in Asia.
4
2
1
3
2a
Listen again and fill in the blanks in 2a with the numbers
in the box.
4 The Yangtze River is about _______ kilometers long and the Yellow River is ______ kilometers long.
2 China has the biggest population in the world. It’s a lot bigger than the population of the US.
1 China is over ______ years old. It has a much longer history than the US. The US is not even _____ years old.
3 China is almost as big as the US, and it is the biggest country in Asia.
6,300
5,464
5,000
300
6,300 5,000 5,464 300
2b
Is China one of the oldest countries in the world?
Yes, it is. It's much older than the US.
How old is it?
It’s over 5,000 years old.
Make conversations using the information in 2a.
2c
Practice in pairs.
2c
6,300 km
5,000 years
5,464 km
Can you introduce China now?

China is a great country.
For population, it has... in the world. It is a lot/ much ...than...
It is ... in size. It is ...than....
As for history, it is one of .... It is much older than...
I love my country.
1.形容词的最高级及比较级表达最高级含义：
the+ 形容词/副词最高级 ...+in/of = 比较级+ than any other + 单数n.
Qomolangma is higher than any other mountain in the world.=Qomolangma is the highest mountain in the world.
The Sahara is bigger than any other desert in the world. =The Sahara is the biggest desert in the world.
Summary
4. 表示长、宽、高时常用句型：
基数词 + 单位词（meter, foot, inch, kilo等）+ 形容词（ long, wide, high, tall）
5. Read numbers.
2. one of+形容词最高级+名词复数 : 表示...之一
China is one of the oldest countries in the world.
3. much/ a lot +形容词比较级+ than...
China is much/ a lot older than the United States.
Homework
Find more world records with numbers on the Internet and try to read it in English.