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(共34张PPT)
Unit 7 What’s the highest mountain in the world
人教新目标版 八年级下
2d&Grammar focus-4c优质课
Learning objectives
1.能正确运用形容词副词的比较级和最高级进行事物间的比较；
2.能用大数字描述和谈论自然地理概述。
3.熟练运用所学的词汇及形容词和副词的比较级、最高级的不同表达句式；
4. 了解我国的悠久历史、灿烂文化和大好河山。
How much do you know about China
size
about 9,600,000 square kilometers
one of the
largest ...
history
over 5,000 years
one of the oldest ...
population
1.4 billion
has the largest
population
famous rivers
the Yellow River
the Yangtze River
Revision
Today, I am going to follow the guide(导游） to the Great Wall, and learn something about it.
In China, the Great Wall is the most famous place.
Background
It is a man-made object.
(人造的)
He who has never been to the Great Wall is not a true man.
(不到长城非好汉)
中国的长城共有近一万公里，东起河北秦皇岛的山海关，西到嘉峪关，这是明代修筑长城的两个最大关口，北京境内的长城有600余公里，比较著名的有八达岭长城、金山岭长城、司马台长城、慕田峪长城、居庸关长城和箭扣长城等。
Read 2d and answer the following questions.
1. How long is the Ming Great Wall
2.Which is the most famous part of the Ming Great Wall
3. Why did the ancient emperors build the wall
4. What does the guide say about the wall
If we’re only talking about the parts from the Ming Dynasty,
it’s about 8,850 kilometers long.
Badaling part of the wall.
The main reason was to protect their part of the country.
the guide
It's quite tall and wide.
It's the longest wall in the world.
The ancient emperors built it to protect their parts of the country.
There are no man-made objects as big as this.
Badaling is the most famous part of the Ming Great Wall.
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.
可以随便做某事
朝代
正如
adj. 令人惊奇的
adj. 人造的
curious
proud
surprised
5.What’s the
feeling of the
guide and tourists
Guide: Feel free to ....
Tourist 1: How long ...
Guide: Ah, the ...! If ....
This ...
Tourist 2: Wow,...! Why ...
Guide:The main reason was ... As .... As far ....
Tourist 3: Is ...
Guide : Yes, ...
Role-play the conversation.
Role play
The parts from the Ming Dynasty is about 8, 850 kilometers long
It's the longest wall in the world.
there are no other man- made objects as big as this.
Pay attention to the colorful words.
How long is the wall
形容词副词比较级和最高级
大数的读法
What’s the highest mountain in the world Qomolangma.
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 out the comparatives and superlatives.
Grammar Focus
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……”。
一、形容词、副词的比较级和最高级
Tips：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。
①直接加 -er 或 -est
tall—_____—______ long—______—______
②以不发音的字母e结尾的单词直接加 -r 或 -st
③以“辅音字母+y” 结尾，把y变为i，再加 -er 或- est
nice—______—______
heavy—________—________
taller
tallest
longer
longest
nicer
nicest
heavier
heaviest
规则变化
规则变化
④重读闭音节（末尾只有一个辅音字母）
双写辅音字母再加 -er或 -est
⑤部分双音节词和多音节词
分别在原级前加more构成比较级和most构成最高级
big—_______—_______
slowly—___________—___________
beautiful—______________—______________
bigger
biggest
more slowly
most slowly
more beautiful
most beautiful
原级 比较级 最高级
good / well better best
bad worse worst
many/much more most
little less least
old older/elder oldest / eldest
far farther (更远)/ further (进一步的) farthest /
furthest
不规则变化
1.“比较级+than any other+可数名词单数”=“比较级+than the other+可数名词复数”表示“比其他任何……都……”, 表示最高级含义， 可与表示最高级的句子进行转换。
My father is the tallest one in my family.
=My father is taller than any other member in my family.
=My father is taller than the other members in my family.
可用于修饰形容词和副词比较级程度的副词（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。）
二、比较级的用法
2. the +比较级，the + 比较级，“越… 就越…”
越努力越幸运。
The harder you work, the luckier you will be.
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 interesting as that one .
形容词和副词的比较级
构成
规则变化
不规则变化
加后缀 -er
前面加 more
比较级表示最高级
比较级+than any other+可数名词单数
比较级+than the other+可数名词复数
可用于修饰形容词和副词比较级程度的副词有： much, a lot, a little, a bit, even, far等。
形容词和副词的原级
as+形容词/副词原级+as 表示双方在程度、性质、特征等方面一样。
Summary
1.（the + ）最高级 + in/of 短语， 意为“……中最……的”
I think spring is the best time of a year.
Tom works (the) hardest in Class 3.
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”。
Hangzhou is one of the most beautiful cities in the world.
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）。
China is the third largest country in the world.
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 biggest, Beijing, Shanghai or Guangzhou
【注意】
(1)最高级前有物主代词、名词所有格等修饰时，其前不加the。
The Yangtze River is China’s longest river.
(2)当most表示“非常”时，其前不加the。
It is a most useful book.
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
Fill in the blanks with the correct forms of the words in the box.
4a
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.
Write two comparisons about two topics. Write true facts.
4b
Two cities: _________ and ___________
1. ___________________________________________.
2. ___________________________________________
____________________________________ .
Shanghai Sydney
Shanghai is as modern as Sydney
Shanghai is much smaller than Sydney. Sydney is
almost 2 times as big as Shanghai
Two animals: ___________ and ____________
1. _______________________________.
2. _______________________________________.
An elephant is taller than a panda
an elephant
a panda
An elephant is much heavier than a panda
1. ________________________________________________________
2. ________________________________________________________
3. ________________________________________________________
4. ________________________________________________________
5. ________________________________________________________
What is the highest building in our city
What is the busiest road in our city
What is the largest shopping mall in our city
Which is the biggest park in our city
Which is the most expensive clothes store in our city
Write five questions using comparisons. Then ask your partner your questions.
4c
中考真题
The teacher is glad to see that Tony is _______ than before. (北京市)
A. careful B. more careful
C. most careful D. the most careful
— What is the world’s ________ mountain
— Mount Qomolangma. (河北省)
A. lower B. lowest
C. higher D. highest
中考真题
Now people can send messages with their voices. It is ________ than using a keyboard. (辽宁-大连)
A. fast B. faster
C. fastest D. the fastest
Mike lives ________ from school of all the students, so he always takes a bus to school.(辽宁-阜新)
A. far B. farther
C. further D. the farthest
中考真题
— Is Larry as ________ as Oliver
— No, he isn’t. Larry is shorter.(辽宁-吉林)
A. taller B. tall C. the tallest
The more ________ you drive, the ________ you are.(黑龙江-大庆)
A. careful; safer B. carefully; safer
C. carefully; safely D. careful; safely
Running is one of ________ sports in China.(湖南-湘潭)
A. popular B. more popular C. the most popular
中考真题
Which colour do you like _____, purple, orange or pink (江苏-徐州)
A. well B. good C. better D. best
Dr. Yuan Longping had a dream that he could develop rice as ________ as peanuts. (湖北-黄石)
A. large B. largest C. larger D. the largest
Huawei Mate 40 is ________ of the three mobile phones. (湖南-岳阳)
A. expensive B. more expensive C. the most expensive
中考真题
— What’s ________ mountain in the world
— Qomolangma. It is 8848.86 meters high according to the latest report.(四川-遂宁)
A. higher B. highest C. the highest D. high
— Which country has a ________ population, China or Canada
— China. Canada is a lot ________ crowded than China.(四川-达州)
A. bigger; less B. bigger; more
C. smaller; less D. smaller; more
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Homework
1. Recite Grammar Focus.
2. Finish the exercises.
3. Preview 3a.
4. Make sentences by using comparatives and superlatives.
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