Unit 7 What is the highest mountain in the world Section A (GF-4c)课件

(共27张PPT)
Section A (Grammar Focus-4c)
学练优八年级英语下（RJ）
教学课件
Unit 7 What's the highest mountian in the world
Learning goals
By the end of the class,students will be able to use the comparatives and superlatives to make comparisons.
Facts of Qomolangma.
1.——How _____ is Qomolangma
——It is 8848.86 meters _______.
3.Qomolangma is _______ _______ mountain in the world.
2.Qomolangma is _______ than any
other mountain in the world.
high
higher
high
highest
the
Grammar Focus
Read and translate
What’s the highest mountain in the world Qormolangma.
How high is Qomolangma It’s 8,844.43 meters high. It’s higher than any other mountain.
Which is the deepest salt lake in the world The Caspian Sea is the deepest of all the salt lakes.
Did you know that China is one of the oldest countries in the world Yes, I did. It’s much older than the US.
Find the comparatives and superlatives.
此句型用比较级表达最高级含义
Grammar
Revision
形容词和副词通常有三种级别：
原级（Positive form）：没有比较含义，“……”；
比较级（Comparative form）：两者间比较，“更……”；
最高级（Superlative form）：三者及三者以上比较，“最……”。
注意：形容词最高级前面的the一般不省略，而副词最高级前的the可以省略。
一、比较级和最高级的构成
1. 规则变化
单音节和部分双音节词 多音节词和部分双音节词
一般在词尾直接加 -er或-est 以e结尾的，加-r或 -st 以“辅音字母+y”结尾的，改y为i加-er或-est 重读闭音节以一个辅音字母结尾的，双写这个辅音字母后加 -er或-est 在单词前加 more构成比较级，加most构成最高级
long→longer→longest nice→nicer→nicest heavy→heavier→heaviest big→bigger→biggest beautiful→more beautiful→most beautiful
2. 不规则变化
原级 比较级 最高级
good/well better best
many/much more most
bad/badly worse worst
little less least
far farther/further farthest/furthest
基本结构有两个1：A+be+形容词比较级+than +B
China is older than the US.
2: A+ 实义动词+副词比较级+than +B
He runs faster than me.
比较级常见句式还有：
1.比较级+than any other +比较对象（单数）比其他任何一个都要--，表示最高级的意义，可与最高级句型转换。
Qomolangma is higher than any other mountain in the world.
=Qomolangma is the highest mountain in the world.
2.the +比较级，the + 比较级，越--- 就越---
The harder you work,the luckier you will be.
二、比较级的用法
3.比较级+and+比较级 越来越----
Our country will be stronger and stronger.
Our city is becoming more and more beautiful.
补充：
as +原级+as 与---一样，not so/as---as---不及
This story is not as/so interestiong as that one .
可用于修饰形容词和副词比较级的词（短语）有：
much, a lot ,a little, a bit,even, far等。(两多两少一甚至，还有一个远去了。）
1.主语+be/实义动词+（the + ）最高级 + in/of 短语
该结构意为“……中最……的”。
Jay is the most popular in China.
Su runs (the) fastest in China.
2. one of the + 最高级 + 可数名词复数 + in/of 短语
该结构意为“……中最……的……之一”，该结构做主语时，谓语动词用单数。
Shanghai is one of the biggest cities in the world.
of与in都有“在......当中”的意思。主语同of后面的词是指同一类的人或物。而in的后面是范围。
三、最高级的用法
3. the + 序数词 + 最高级 + 可数名词单数 + in/of 短语
该结构意为“……在……中是第几……的……”（从第二开始）。
The Yellow River is the second longest river in China.
4. Which/Who … + 最高级, A, B or C
该结构意为“A，B，C中，哪个/谁最……？”。
Which is the longest river, the Nile,the Amazon or the Yangtze
4a
Fill in the blanks with the correct forms of the words in the box.
1. The Amazon River is one of the _________ rivers in the world. It’s a little ________ than the Yangtze River.
2. Qomolangma is 8,844.43 meters _______. It’s one of the most __________ places for serious mountain climbers.
3. No ocean in the world is as ________ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is ________ smaller.
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n. 大海，海洋
4b
Write two comparisons about two topics. Write true facts.
e.g. Two rivers: the Yangtze River and the Amazon River
The Yangtze River is almost as long as the Amazon River.
The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.
comparison Fuyang Hefei
population 8,170,000 9,460,000
size 9,775 square kilometers 11,445 square kilometers
Fuyang
Hefei
The population of Fuyang is smaller than that of Hefei
Hefei is bigger than Fuyang in size.
the elephant
the lion
height: about 4 meters
speed:40 km/h
height:about 1.5 meters
speed: 60 km/h
The elephant is taller than the lion.
The lion runs faster than the elephant .
In Fuyang Wild Animal Zoo ,you can see these wild animals.It is a woderful place to visit.
How much do you know about our hometown —Fuyang？
Huarun Towers——the highest buildingin Fuyang
Fuyang Science and Technology Museun——one of the most interesting places to visit
How much do you know about our hometown —Fuyang？
Xinhua Bookstore——the largest bookstore in Fuyang
Ying River ——the longest river in Fuyang
How much do you know about our hometown —Fuyang？
Yingzhou West Lake ——
one of the most beautiful places
Fuyang Ecological Park——
one of the most beautiful places to visit
4c
Write five questions using comparisons. Then ask your partner your questions.
1. _____________________________________________________
2. _____________________________________________________
3. ____________________________________________________
4. ___________________________________________________
5. ____________________________________________________
What is the highest building in our city
What is the the biggest bookstore in our city
Which is the longest river in our city
---
---
What is the highest building in our city
It’s Huarun Towers. It is 240 meters high.
----
----.
Exercises
一、单项选择。
1.China has a ______ population than America.
A. more B. much more C. much large D. much larger
2.Beijing is one of _____ in China.
A. more famous city B. most famous cities
C. the most famous cities D. much more famous city
3.China is the third _____ country in the world.
A. large B. largest C. larger D. as large as
D
C
B
4.Staying with families and friends in our free time is one of _____ things.
A. the happiest B. happier C. the happy D. happiest
5.Qomolangma is higher than _____ in the world.
A. the other mountain B. another mountain
C. any other mountain D. any mountains
6.—I think history is more useful than physics.
—In my opinion, history is______ physics. They are both important.
A. as useful as B. not so useful as
C. less useful than D. the most useful of
A
C
A
二、用括号内所给单词的适当形式填空。
1.This question is quite __________. That one is ____________ than this one. (difficult)
2.I think basketball is as _______ (excite) as soccer.
3.Which of these books would you like _____(much)
4.Take exercise one hour a day, and you will become ________ (strong) than before.
5.Uncle Wang doesn’t drive as _________ as Uncle Liu. I think Uncle Liu drives _____________. (carefully)
difficult
more difficult
exciting
most
stronger
carefully
more carefully
Homework
Preview the new words and phrases in Section B(1a-1d).
Do the exercises in students’ book.
Thank you!