(共25张PPT)
Unit 7
What’s the highest mountain in the world
Section A 1a-2c
Can you read these large numbers
hundred
百
thousand
千
million
百万
billion
十亿
trillion
万亿/兆
9,600,000
1,025
6,671
8,844.43
nine million six hundred thousand
one thousand and twenty-five
six thousand six hundred and seventy-one
eight thousand eight hundred and forty-four point four three
[ b lj n]
[ m lj n]
[ tr lj n]
[ θa znd]
[ h ndr d]
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
Do you know these famous places in the world
Qomolangma
the Nile
the Caspian Sea
the Sahara
['t m lɑ: m ]
[s 'hɑ:r ]
['k spi n]
[na l]
珠穆朗玛峰是世界海拔最高的山峰，高度为8844.43米。
Qomolangma
Name
Qomolangma
Height
8,844.43 meters high
Where
In China
the Nile
尼罗河长6671千米，是世界上最长的河流。
Who
The River Nile
What
6,671 kilometers long
Where
In Africa
the Caspian Sea
里海虽称海，但却是一个巨大的内陆咸水湖，是世界上最大的湖泊。
Name
Caspian Sea
Depth
1,025 meters deep
Where
Between Asia and Europe
the Sahara
撒哈拉沙漠形成于约250万年前，是世界上最大的沙质荒漠。
Name
The Sahara Desert
Size
9,600,000 square kilometers
Where
In North Africa
Qomolangma
about 9,000,000 square kilometers in size
The Sahara
1,025 meters deep
The Caspian Sea
6,671 kilometers long
The Nile
8,848.86 meters high
1a
Match the facts you know.
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
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
比较级+than any other+可数名词单数
“……比其他任何一个……都……”，指
同一范围内的比较，表达最高级的意义。
比较级+ than any +可数名词单数
“……比任何一个……都……”，指不
在同一范围内进行比较。
Use the information in 1b to make conversations.
A: What is the highest mountain
in the world
B: Qomolangma.
1c
1c
A: What is the biggest desert in the world
B: Sahara.
A: What is the deepest salt lake in the
world
B: Caspian sea.
A: What is the longest river in the world
B: Nile.
Do you know any geographical facts about China
Yangtze River
Yellow River
How long are the two famous rivers
What's the population of China
人口数量
How long is the Great Wall
Great Wall
Pre-listening
6300
5000
5465
300
Read the numbers.
six thousand and three hundred
five thousand
five thousand, four hundred and sixty-five
three hundred
2a
Listen and number the facts [1- 4] in the order you hear them.
6,300 5,000 5,464 300
___ The Yangtze River is about ______ kilometers long and the Yellow River is ______ kilometers long.
4
___ 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.
1
3
6,300 5,000 5,464 300
2
2b
Listen again and fill in the blanks in 2a with the numbers in the box.
___ 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.
6,300 5,000 5,464 300
6,300
5,464
1. 集体名词，作主语时，谓语动词用第三人称单数形式。
2. 表示人口“多”或“少”时，常用large，big或small。
3. 分数或百分数修饰population作主语时，谓语动词用单
复数均可。
4. 询问人口数量时，用“What’s the population of … ”
或“How large is the population of … ”。
___ 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.
6,300 5,000 5,464 300
5,000
300
much在此作副词，“非常；很”，表示程度，修饰比较级。可用于修饰比较级的词还有a lot, a little, a bit, even, far等。
2c
Make conversations using the information
in 2a.
A: Did you know that China is one of
the oldest countries in the world
B: Yes, I did. It’s much older than
my country.
谈论物体的
宽度
深度
高度
长度
tall/high
deep
long
wide
—It's + 数量+high/tall/long/wide/deep.
1. —How high/tall/long/wide/deep...+ is + 主语
2. 数词+ square kilometer(s)
数词+ square meter(s)
in size
Summary
英语表示“有多长（宽，高……）”时，一般将_____和__________ 放在表示长宽高的形容词___。
数词
数量单位
前
