Unit 7 What's the highest mountain in the world? Section A 1a-1c 课件 (共18张PPT)

(共18张PPT)
Unit 7
What’s the highest mountain
in the world
Section A (1a-1c)
Challenge yourselves.(自主复习)
一.语法梳理 形容词比较级/最高级变换规则
(1)规则变化
①一般在词尾加_______
②以字母e结尾的词加______
③以一个辅音字母结尾的重读闭音节词，先______该辅音字母，再加______.
④以“辅音字母+y”结尾的双音节词，先改_____为_____, 再加________.
⑤多音节词和部分双音节词，加________
(2)不规则变化
原级 比较级 最高级
good/well
bad/badly
many/much
little
far farther/further farthest/furthest
(3)句型
越来越暖和__________________
越来越受欢迎_______________
越来越... ____________________
和…一样_____________________
不及，不如_____________________
_____________________
er/est
r/st
双写
er/est
y
i
er/est
most
注意：比较级是两者之间比较，标志词是__________
最高级是三者及三者以上比较，最高级前要加定冠词_________

best
worst
most
least
warmer and warmer
more and more popular
the
better
worse
more
less
The+比较级， the+比较级
as 形容词/副词原级 as
not as/so …..as
less形容词/副词原级 than
than
Geographical Facts
What’s the highest mountain in the world
Which is the deepest salt lake in the world
Which is the longest river in the world
What’s the biggest desert in the world
Which is the second longest river in the world
Qomolangma about 9,600,000 square
kilometers in size(面积)
The Sahara 1,025 meters deep
The Caspian Sea 6,671 kilometers long
The Nile 8,844.86 meters high
1a Match the facts you know
A: What's the highest mountain in the world
B: ___________is __________mountain in the world.
A: How high is Qomolangma
B: It’s __________________ high.
8,848.86 meters
Qomolangma the highest
A: What's the biggest desert in the world
B: ___________is ________________ dessert in the world.
A: How big is Sahara
B: It's about_________________________ in size.
The Sahara
the biggest
9,600,000 square kilometers
A: What's the deepest salt lake in the world
B: ______________is ___________ salt lake in the world.
A: How deep is the Caspian Sea
B: It's about_____________ deep.
The Caspian Sea the deepest
1,025 meters
A: What's the longest river in the world
B: ________is ___________ river in the world.
A: How long is the Nile
B: It's about_____________ long.
The Nile the longest
6,671 kilometers
A: What's the second longest river in the world
B: _________is _______________ river in the world.
A: How long is the Amazon
B: It's about__________________ long.
The Amazon the second longest
6,400 kilometers
The Yangtze River
The Yellow River
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.
The Amazon is ______________ river in the world.
1b Listen and complete the sentences.
higher
the biggest
the deepest
the longest
the second longest
“the+序数词+最高级+单数名词” “第几……最……的……”
“比较级+ than any other +单数名词”
“比其他任何一个……都……”
意义相当于最高级
形容词最高级结构: the +最高级
A: What is the highest mountain in the world
B: It’s Qomolangma.
A: How high is it
B: It’s 8,848.86 meters high.
Use the information in 1b to make conversations.
For example:
Qomolangma is 8848.86 meters high, the highest mountain in the world. It’s 26 kilometers long.
Qomolangma
The Sahara is the biggest desert in the world.
It is located in the northern Africa.
the Sahara
The Caspian Sea is the deepest lake in the world.
It lies in the border between Asia and Europe.
The Nile is the longest river in the world.
It’s 6,671 kilometers long.
It runs through 9 countries.
Qomolangma is the highest mountain in the world.
The Sahara is the biggest desert in the world.
The Caspian Sea is the deepest of all the salt lakes.
The Nile is the longest river in the world.
The Amazon is the second longest river in the world.
Summary
Thank you!