人教新目标八年级下册英语Unit 7 What’s the highest mountain in the world？Section A 1a-2c 课件（共有PPT28张，含语音）

(共28张PPT)
Unit 7 What’s the highest mountain in the world
Objectives
At the end of the lesson, students will be able to
1.Pornounce and use correctly the new words such as square, meter, deep, desert, population, Asia.
2. Master the use of large numbers. E.g.
The Yangtze River is about 6,300 kilometers long and the Yellow River is 5,464 kilometers long.
3.Descrble objects by using the forms of comparatives and superlatives.
New words
square n. 平方
meter n. 米
[skwe ]
[ mi:t (r)]
deep adj. 深的
desert n. 沙漠
[di:p]
['dez t]
Asia n. 亚洲
population n. 人口
[p pj 'le ( )n]
['e ]
Quick eyes
Let's enjoy the journey around the world！
Warming-up
Ningxia
Qomolangma --the highest mountain
珠穆朗玛峰--世界上最高的山峰
Caspian Sea--the deepest lake
里海--世界最深的湖
the Nile--the longest river
尼罗河--世界最长河流
the Sahara--the biggest desert
撒哈拉沙漠--世界最大沙漠
highest
longest
biggest
deepest
mountain 山
river 河
desert 沙漠
lake 淡水湖
Where did we go just now
We went to
the
in the world.
What is the highest mountain
the longest river
the biggest desert
the deepest lake
Talk about these pictures in pairs.
in the world
It’s_________.
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
35 23
1,025
30,000
6, 671
8,844.43
9,600,000
How do you read these numbers
thirty-five
twenty-three
thirty thousand
one thousand and twenty-five
six thousand six hundred and seventy-one
eight thousand eight hundred and forty-four
point four three
nine million six hundred thousand
=nine point six million
is the largest number.
is the smallest number.
6,300
5,000
5,464
300
总结：
　
xxxxx , 000 , 000 , 000
thousand
million
billion
7928500
434600
987654321
How do you read these numbers
㎡
4m
square meters in size
=
16
16
[skwe ]
[ mi:t (r)]
4m
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.
It’s about 6300 meters long.
A. The Amazon River
B. The Yellow River
C. The Nile
D. The Yangtze River
['j z ]
China
the US
Do you know anything about the two countries
________has the biggest population in the world.
________is the biggest country in Asia.
________has a much longer history.
China
2a 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
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
What is the…est___
in the world/China…
A: What is the highest/longest/deepest/ biggest...in the world
B: ...
____. It's higher/longer/
… than any other ___in the world.
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.




population n. 人口；人口数量
问人口数量的句型：What’s the population of...
eg：What’s the population of the world now
population和people的区别:前者通常用what来提问，后者用how many 来提问
形容人口多少用big，large或small。
eg：The city has a big/large/small population.
population作主语，表达一个整体概念时，谓语动词用单数，
当其前有分数或百分数修饰时，谓语动词可用单数或复数。
eg：The population of Nigeria is more than 100 million.(强调整体性) Three quarters of the population in the city is/are from other parts of the country.
*feel free to...表示很随意地去做某事。feel free 是英语口语中一个常用表达。
eg：Please feel free to ask questions.
*protect...from/against...保护……免受/遭……
eg：People build houses to protect themselves against bad weather.
*as far as就……；尽……
eg：As far as I can see, you have done nothing wrong.
*as far as还可表示“像……那样远；远到……”，后跟名词或从句，强调至某一指明地点的距离。在否定句中，也可用so far as。
eg：We went as far as Lion Rock Tunnel.