(共24张PPT)
Unit 7 What’s the highest mountain in the world
Section A (1a— 2d)优质课
一、语言能力
能学习并掌握：square, meter, deep, desert, population等词汇；
熟练大数字的听说读写。
二、学习能力
通过听说训练，学习并掌握物体长宽高及面积的表达；能通过
模仿，熟练运用形容词和副词的比较级、最高级谈论自然地理
事实。
三、思维品质
了解世界和中国地理知识，能条理清晰的分享你所知其他地理
方面的知识。
四、文化意识
通过学习世界及国家“地理之最”，培养对祖国的自豪感，对
大自然的热爱之情。
Let’s enjoy the following song.
Lead-in
Lead-in
Hello, I’m Zhang Chen,a guide.
You know Mr. Nature is the greatest artist in the world.
It creates many wonders on Earth.
Today I’m going to take you to four amazing nature around the world.
please choose the following airplane,
I will take you to travel around the world.
Qomolangma
珠穆朗玛峰
the Nile
尼罗河
the Caspian Sea
里海
the Sahara
撒哈拉沙漠
Before traveling,
Do you know how to read larger numbers
十亿
百万
千
百
点
three billion and sixty-eight million, six hundred and nine thousand, nine hundred and eighty point one five.
billion
million
thousand
hundred
point
3, 068, 609, 980. 15
billion
million
thousand
point
one five
and
Let’s learn
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。
Here are some tips for you.
Let’s learn
Read!
Who is
the best
9,752.22
5,660,000,000
8,653,325
6,000,080,000
eight million, six hundred and fifty-three thousand, three hundred and twenty-five.
five billion, six hundred and sixty million.
nine thousand, seven hundred and fifty-two point two two.
six billion and eighty thousand.
Brainstorm
Competition !
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 .
Brainstorm
Can you read these numbers
Match the facts you know.
1a
Qomolangma
the Nile
the Caspian Sea
the Sahara
about 9,600,000
square kilometers in size
1,025 meters deep
6,671 kilometers long
8,848.86 meters high
=in depth
=in length
=in height
Let’s do
长、宽、高、深、面积的表达结构：
数字 + 单位词 + 形容词(deep,long, high...)
= 数字 + 单位词+in+名词.(depth,length,
height,size...)
0
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
A：What is the highest mountain
the longest river
the biggest desert
the deepest lake
B：It’s_________.
pair work
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 do you want to know about these places
Let’s go on!
“世界之最”
Predict
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
1b
Listen !
(1)最高级结构:the+最高级+其他
Lin Tao is the tallest boy in our class.
(2)比较级表达最高级含义
“比较级+ than any other +名词+其他”比其他任何一个…都…
Lin Tao is taller than any other student in our class.
How to express superlative
Let’s think
(3)“the+序数词+最高级+名词单数”，表示“第几…最…的…
Li Ming is the second tallest boy in our class.
superlative
If you are a guide(导游)，please introduce(介绍) a famous place to the tourists(游客).
__________ is the longest river in China.
It’s longer than any other river in China.
A. The Amazon River
B. The Yellow River
C. The Nile
D. The Yangtze River
['j z ]
比较级+than any other+名词+其他,比其他任何一个…都…
=the+最高级+名词+其他
Listen and number the facts [1-4] in the order you hear them.
2a
6,300 5,000 5,464 300
____ 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
n. 亚洲
长江
much+比较级…得多
much, a lot, a little, still, less,even+形容词比较级表示程度
2b Listen again and fill in the blanks with the numbers in the box.
6,300 5,000 5,464 300
___ 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
6,300
5,464
5,000
300
Look and say
Wow, that’s amazing.
Today let’s travel to
the Great Wall.
1. How long is the Ming Great Wall
2. Is Badaling part of the Ming Great Wall
It’s about 8850 kilometers long.
2d Read the conversation and answer the questions:
Yes, it’s the most famous part.
Guide: Feel free to ask me anything on today's Great Wall tour.
Tourist 1: How long is the wall
Guide: Ah, the most popular question! If we're only talking about the parts from the Ming Dynasty, it’s about 8，850 kilometers long. This makes it the longest wall in the world.
Tourist 2: Wow, that’s amazing！ Why did the ancient emperors build the wall
Guide: The main reason was to protect their part of the country. As you can see , it’s quite tall and wide. As far as I know, there are no other man made objects as big as this.
Tourist 3: Is Badaling part of the Ming Great Wall
Guide: Yes, it's the most famous part.
随便做某事
正如你所看见的
就我所知
墙
惊奇的
古代的王帝
保护
宽的
人工制造的物体
New words
Sentences
Expressions
square meter deep desert population Asia tour tourist
wall amazing ancient protect wide man-made
feel free as far as I know 长、宽、高、深、面积的表达
amazed
①The Yangtze River is about 6,300 kilometers long.
②Qomolangma is higher than any other mountains in the world.
③ China has the biggest population in the world.
in size protect…from…
Summary
1.根据句意，从方框中选择恰当的单词填空，有的需要变换形式其中有两个余
1. Linda, the sun is shining. Please wear your sunglasses _________ your eyes.
2. We hardly see grass or water in the ________.
3. Those ________ were interested in the Summer Palace and they visited it.
Exercise
desert, protect, deep, tour, ancient, wide, wall
to protect
desert
tourists
4. This building is ____________ than that one. It has a longer history.
5. I think Green Street is the ________ of all the streets in our city. Five cars can run on it side by side.
more ancient
widest
2.根据汉语意思完成英语句子，每空一词。
1. 就我所知，Alex是班里最勤奋的学生。
_______ _______ _______ _______ _______, Alex is the most hard-working student in the class.
2. 里海比其他的咸水湖都深。
The Caspian Sea is ________ ________ ________ ________ ________ ________.
3. 在整个市里我们镇的人口最多。
Our town___ ____ ______________ ____________ in the whole city.
As far as I know
deeper than
has the biggest / largest
the other salt lakes
population
4. 我们学校操场面积约为200平方米。
Our school playground is about 200 ______ ____ ____ ________
5. 孩子们，桌子上的东西随便吃！
Children, ________ ________ to eat anything on the table.
meters in size
feel free
square
Thank you for listening
