(共21张PPT)
Unit 7 What’s the highest mountain
in the world
Section A (1a-1c)
人教版八年级下册
Learning objectives
Key words & phrases:
square, square kilometer, meter, deep, desert, any other, geographical
Key sentences:
1. It's higher than any other mountain in the world.
2. Which is the deepest salt lake in the world
3. It seems that you know the answers to all my questions.
To talk about geography and nature.
Do you like travelling
When we are travelling , we should also learn something important.
Lead in
Qomolangma
the Nile
the Caspian Sea
the Sahara
['t m lɑ: m ]
[s 'hɑ:r ]
['k spi n]
[na l]
Lead in
Do you know these famous places in the world
Free Talk
Can you say anything else about these famous places
Qomolangma is the highest mountain in the world.
It’s 8844.43 meters high.
the Sahara
The Sahara is the biggest desert in the world.
It’s about 9,600,000 square kilometers in size.
the Nile
The Nile is the longest river in the world.
It’s more than 6,671 kilometers long.
the Caspian Sea
The Caspian Sea is the biggest salt lake in the world.
It’s 1025 meters deep.
Can you read these large numbers
hundred
百
thousand
千
million
百万
billion
十亿
trillion
万亿
9,600,000
1,025
6,671
8,848.86
nine million six hundred thousand
one thousand and twenty-five
six thousand six hundred and seventy-one
eight thousand eight hundred and forty-eight point eight six
把长数字分为3个数字一组，用逗号隔开，从右到左，
把第一个逗号看作thousand，第二个逗号看作million,第三个逗号是billion, “and”只有十位数和百位数之间出现,小数点后面的数字按单个读
百位数没有数字时，thousand 和 十位数之间，and不省略
84 . 14 小数点后面读one four不整读
Pre-listening
Match the facts you know.
1a
Qomolangma About 9,600,000 square kilometers in size
The Sahara 1,025 meters deep
The Caspian Sea 6,671 kilometers long
The Nile 8,848.86 meters high
物体长度（long），高度(tall/high)，深度(deep)，宽度(wide)的表达方法：
—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
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
While-listening
Listen and complete the sentences.
1b
Qomolangma is _____________ than any other mountain in the world.
The Sahara is _____________ desert in the world.
The Caspian Sea is _______________ of all the salt lakes.
The Nile is _________________ river in the world.
higher
the biggest
the deepest
the longest
n. 沙漠
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
Tapescripts
地理事实
Boy 1:
“比较级+ than any other +名词+其他”
表示“比其他任何一个……都……”
Teacher: That’s right. And who can tell me what the Sahara is
Girl 1:
The Sahara is the biggest desert in the world.
Qomolangma! It’s higher than any other mountain in the world.
Teacher: Very good. And which is the deepest salt lake in the world
Girl 2:
Teacher:
The Caspian Sea is the deepest of all the salt lakes.
You’re all so smart! Now, for the last question,which is the longest river in the world
Boy 2:
“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”
Boy 1:
Teacher:
I know! The Nile is the longest river in the world.
And the Amazon is the second longest river in the world.
It seems that you know the answers to all my
questions. Good job!
Teacher:
It seems that you know the answers to all my questions. Good job!
Practice
Post-listening
Use the information in 1b to make conversations.
1c
Qomolangma.
What is the highest mountain in the world
The Sahara, 9600000, big/in size
The Caspian Sea, 1025, deep
The Nile, 6671, long
How high is it
It’s 8848.86meters high.
What is the biggest desert in the world
The Sahara.
How big is it
It’s about 9,600,000 kilometers in size.
Summary
01
02
03
表示长、宽、高时常用句型：
基数词 + 单位词（meter, kilo等）+ 形容词（ long, deep, high, tall）
数字的表达：
把长数字分为3个数字一组，用逗号隔开，从左到右，把第一个逗号看作thousand，第二个逗号看作million，第三个逗号看做billion.
形容词和副词的最高级句型：
the+ 形容词/副词最高级 ...+in/of
= 比较级+ than any other + 单数n.
（这里是用比较级表示最高级的用法。)
Summary
Homework
1.Practice with your classmates to speak and write large numbers.
2.Remember the words and phrases of this class.
谢谢
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