(共37张PPT)
Unit 7 What’s the highest mountain in the world
人教新目标版 八年级下
SectionA 1a-2c 听说优质课
Learning objectives
1. 能够听懂谈论“自然地理之最”的对话内容，并掌握物体长宽高及面积的表达等。
2. 能够掌握大数字的读法，并运用大数字和比较级、最高级谈论“自然地理之最”。
3. 能够了解我国和世界的一些“自然地理之最”，并通过对比加深对祖国的了解和热爱。
Warming-up
1. What’s video about
It’s about the Changbai Mountains.
2. What is the deepest mountain lake around the world
The Tianchi Lake (in Jilin province).
Facts about Changbai Mountains Age of the Changbai Mountains: 2,770,000 years old
Altitude(海拔) of Tianchi Lake: 2,100 meters
Latest eruption(喷发): 300 years ago
Average depth of water: 204 meters
Storage capacity(蓄水量): 2,000,000,000 tons
Duration(持续时间) of winter: 9 months
Average depth of snow: 50 centimeters
Some geographical facts about Changbai Mountains
Post-lstening
Can you read the numbers about the Changbai Mountains
2,770,000
2,100
300
204
2,000,000,000
22
50
9
30
two thousand, one hundred
two million, seven hundred and seventy thousand
two billion
two hundred and four
three hundred
=2.77 million
two point seven seven million
How to read larger numbers
百
百万
千
十亿
two billion and sixty-five million, six hundred and nine thousand, nine hundred and eighty point three four.
点
billion
million
thousand
hundred
point
2, 065, 609, 980. 34
billion
million
thousand
point
three four
and
读时，将每三位数看做一个单位，自右向左依次为thousand千，million百万，billion十亿。
每个单位按百、十、个位向右读。
其中百位到十位之间要加入 and。小数点读point。
小窍门
自右向左三逗分；
一逗千(thousand)
二逗百万(million)
三逗十亿(billion)
左右三位分开读；
百位十位and连。
这种方法你喜欢？
Are you clear
Let’s have a try.
Can you read
these large
numbers
7,742.33
1,390,000,000
3,563,129
2,000,060,000
three million, five hundred and sixty-three thousand, one hundred and twenty-nine.
one billion, three hundred and ninety million.
seven thousand, seven hundred and forty-two point four three.
two billion and sixty thousand.
9,600,000
1,025
6,671
8,848.86
six thousand, six hundred and
seventy-one.
one thousand and twenty-five.
nine million, six hundred thousand.
eight thousand, eight hundred
and forty-eight point eight six .
Qomolangma
What's the name of the mountain
It has long been a dream and target of many mountain climbers.
It's between Nepal and China.
It's the highest mountain in the world.
/'ha st/
Do you know how high Qomolangma is
It's about 8844.43 meters high.
Presentation
the Sahara
/'dez t/
What's the name of the desert
It covers more than one fifth of the Earth's land.
It's on the African continent.
It's the biggest hot desert.
/'b g st/
Do you know how big the Sahara is in its size
It's about 9,600,000 square kilometers in size.
What's the name of the river
the Nile
It has two main branches （主要的支流）.
It's the longest river in the world.
All of the branches flow into the Mediterranean Sea.
/'l g st/
Do you know how long the Nile is
It's about 6,671 kilometers long.
the Caspian Sea
What's the name of the lake
It's surrounded（包围）by five countries.
It forms 40 to 44% of the total lake waters of the world.
It's the largest land-locked（内陆）body of water on the earth.
Do you know how deep the Caspian Sea is
It's about 1,025 meters deep.
/di p/
How high is Qomolangma
It's 8,844.43 meters high.
How deep is the Caspian Sea
It's 1,025 meters deep.
How long is the Nile
It's 6,671 kilometers long.
How big is the Sahara
It's about 9,600,000 square kilometers in size.
Conclusion: 询问长、宽、高、深、面积的表达方法
问句：_____ + _______________________________________+ ___+____
答句一：____ + ___ + ______ + ______ + __________________________。
How
形容词 (long / wide / high / deep / big …)
be
主语
主语
be
基数词
单位词
形容词 (long / wide / high…)
How high is Qomolangma
How deep is the Caspian Sea
How long is the Nile
How big is the Sahara
It's 8,844.43 meters in height.
It's 1,025 meters in depth.
It's 6,671 kilometers in length.
Expansion
wide的名词形式为width
It's 8,844.43 meters high.
It's 1,025 meters deep.
It's 6,671 kilometers long.
It's about 9,600,000 square kilometers in size.
Conclusion: 询问长、宽、高、深、面积的表达方法
问句：_____ + _______________________________________+ ___+____
答句二：____ + ___ + ______ + ______ + ____+_____________________。
How
形容词 (long / wide / high / deep / big …)
be
主语
主语
be
基数词
名词 (size / length / …)
单位词
in
Qomolangma about 9,600,000 square kilometers in size
The Sahara 1,025 meters deep
The Caspian Sea 6,671 kilometers long
The Nile 8,844.43 meters high
Match the facts you know.
1a
Predict and try to complete the sentences in 1b.
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.
What else will we know about these places
Let’s go on!
“世界之最”
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
比其他任何山都高=最高
=Qomolangma is the highest mountain in the world.
总结：形容词比较级+than any other+单数名词=最高级+单数名词。
Listen and complete the sentences.
1b
Teacher：Yesterday, we learned some important geographical facts. I hope you all still remember them. I’m going to test you now
by asking a few questions. First, what’s the highest mountain in the world
Boy 1：Qomolangma! It’s higher than any other mountain in the world.
Teacher：That’s right. And who can tell me what the Sahara is
Girl 1：The Sahara is the biggest desert in the world.
地理事实
Listen again and repeat.
Teacher：Very good. And which is the deepest salt lake in the world
Girl 2：The Caspian Sea is the deepest of all the salt lakes.
Teacher：You’re all so smart! Now, for the last question, which is the longest river in the world
Boy 2：I know! The Nile is the longest river in the world.
Boy 1：And the Amazon is the second longest river in the world.
Teacher：It seems that you know the answers to all my
questions. Good job!
“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”
Qomolangma is higher than any other mountain in the world.
该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。
She is thinner than any other student in her class. = She is the thinnest in her class.
other必不可少，用以将主语从比较对象中排除，避免逻辑矛盾。
比较级 + than any other + 可数名词单数
Language points
【特别提醒】如果比较对象不在同一范围内或不属于同一类别，应用“形容词/副词比较级 + than any（任何的） + 可数名词单数”。
The Pacific Ocean is larger than any lake in the world.
练一练
Hulunbuir is bigger than _____________ city in China.
Hulunbuir is bigger than _____________ city in Anhui.
any other
any
Use the information in 1b to make conversations.
1c
Qomolangma.
What is the highest mountain in the world
Before listening, pay attention to these numbers, Can you read them
300
5,000
5,464
6,300
five thousand, four hundred and sixty-four
five thousand
three hundred
six thousand and three hundred
Can you guess what are these numbers about
May be they are about the
height,length,depth and area.
___ 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, but it is the biggest country in Asia.
6,300 5,000 5,464 300
4
2
1
3
Listen and number the facts [1-4] in the order you hear them.
2a
长江
___ 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, but it is the biggest country in Asia.
6,300 5,000 5,464 300
4
2
1
3
6,300
5,464
5,000
300
a lot和much可修饰比较级。
as...as...和...一样（同级比较）
Listen again and fill in the blanks in 2a with the numbers in the box.
2b
Language points
3. China has the biggest population in the world.
① population n. 人口；人口数量。是集体名词，在句中作主语时，谓语动词用单数形式。population 之前若有分数修饰做主语时,谓语动词则可用复数形式.
中国人口有17亿多。
The population of China is over 1.7 billion.
这儿大约有五分之三的人口是农民。
About three fifths of the population here are farmers.
② 表示有多少人口时，用“have/has a population of + 数词”，或“the population of … is + 数词”。
China has a population of about 1.4 billion. = The population of China is about 1.4 billion.
③ 询问人口多少时，用“What is the population of … ”或“How large is the population of … ”。
What/How large is the population of Henan Province
④ 表示人口多少时，用 big/large 或 small 修饰，而不能用 many，much 或 few 等。
India has a large population.
类似的，表示 price（价格）高低，用 high 或 low，不能用 expensive 或 cheap；表示 temperature（温度）高低，用 high 或 low，不能用 hot 或 cold。
Listen and read.
Mike：Hi, I’m Mike. I’m from the United States.
Boy： Welcome to our class, Mike. We’re happy to meet you.
Mike：Can you tell me a bit more about China
Girl： Sure! Did you know that China is one of the oldest countries in the world It’s over 5,000 years old.
Mike：Yes, I did. It’s much older than my country—in fact, the United States is one of the youngest countries in the world. It’s not even 300 years old.
Boy： And China has the biggest population, too. It’s a lot bigger than the population of the United States.
Mike：But China is about the same size as the US, right
Girl： Yes, and it’s the biggest country in Asia. We also have some famous rivers. The Yangtze River is the longest river in Asia. It’s about 6,300 kilometers long.
Mike：Wow! I didn’t know that. I thought the Yellow River was longer.
Boy： No, the Yellow River is 5,464 kilometers long. But both rivers are very important to China.
History one of the oldest countries; over 5,000 years old one of the youngest countries; not even 300 years old
Population the biggest population in the world /
Area the biggest country in Asia as big as China
River the Yangtze River; the Yellow River /
Make conversations using the information in 2a.
2c
Practice in pairs like this:
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.
Groupwork
How much do you know about China
Facts about China Size ≈ ___________ km Mountain highest Qomolangma (8,844.43 m)
River longest
Lake biggest
Desert largest
Square biggest
City largest
…
Today we talked about the geographical facts about China.
China is … square kilometers in size. The highest mountain … is … It’s … meters high. It’s higher than any other mountain …
I love China. Thank you for your listening.
Report:
https://www.21cnjy.com/help/help_extract.php
