Unit 7 What's the highest mountain in the world? Section A 1a-1c课件(共21张PPT)2022-2023学年人教版八年级下册英语

(共21张PPT)
Unit 7
What's the highest mountain in the world
SectionA1a-1c
He is the tallest in the world.
He is taller than Yao Ming.
It is the heaviest pumpkin in the world.
There is no heavier pumpkin than it.
long longer longest
short shorter shortest
small smaller smallest
old older oldest
early earlier earliest
big bigger biggest
carefully more carefully
most carefully
good better best
many more most
He is taller than Yao Ming.
Read the sentences together
He is the tallest in the world.
He is fatter than any other person.
He is the fattest in the world.
There is no heavier pumpkin than it.
It is the heaviest pumpkin in the world.
It is the most dangerous in the world.
It is more dangerous than any other bird.
The world’s highest
mountain in the world.
Do you know how
high it is
It is 8,844.43 meters
high.
Qomolangma
The second longest river
in the world
-Do you know its
name
-It is Amazon.
-Do you know how
long it is
-It’s about 6,500
kilometers long.
Do you know Sahara is the biggest desert in the world
Yes, it is about 9,600,000 square kilometers in size.
Sahara
The world’s deepest salt lake
The Caspian Sea
Do you know that how deep the world’s deepest Salt lake
Yes, it is 1,025 meters deep.
The longest river in Asia.
The Yangtze River
Do you know that the Yangtze River is the longest river in Asia
Yes, it is 6,300 kilometers long.
Which is the highest mountain in the
world
Which is the longest river in Asia ... …
Talk about these pictures in pairs.
1a Match the facts you know.
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
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
Practice in pairs like this:
A: Which is the … in the …
B: …
Practice
…8,844 meters high. …8,844米高
… meters high (long, wide…)
……米高（长，宽……)。
英语表示“有多长（宽，高……）”时，一般将数词和数量单位放在表示长宽高的形容词前作状语。
e.g. The wall is 1.7 metres wide.
Explaination
A: How high is Qomolangma
B: It’s 8,844 meters high.
Practice
The biggest desert in the world
is about 8,000,000 square kilometers in size.
How big is the Sahara
It’s about 8,000,000 square kilometers in size.
翻译句子
1.这张桌子两米长，一米宽。
2.这座山有1500米高。
3.这栋楼120米高。
4.这本字典有五厘米厚。
5.这个湖有多深？ 1025米深。
The table is two meters long and one meter wide.
The mountain is 1,500 meters high.
The building is 120 meters tall.
The dictionary is five centimeters thick.
How deep is the lake It’s 1,025 meters deep.
The Sahara is the biggest desert in the world.
形容词最高级前通常必须用定冠词 the，副词最高级前可不用。
形容词most前面没有the，不表示最高级的含义，只表示"非常"。
It is a most important problem.
=It is a very important problem.
Grammar
世界最高
的山
最长的河
第二长河
最大的沙漠
最普遍的动物
人口最密集的地方
最古老的文明国家之一
the world’s highest mountain
the highest mountain in the world
the longest river
the second longest river
the biggest desert
the most common animals
the most populated place
one of the oldest
civilizations
Homework
A: To memorize the important phrases
and sentences.
B: To make some dialogues about "Which
is the ...in ... "