Unit 7 What's the highest mountain in the world？Section A Grammar Focus-4c 课件(共30张PPT)

(共30张PPT)
Unit 7 What’s the highest mountain
in the world (Section A Grammar Focus-4c)
人版版八年级下册
Learning objectives
Learn the words and expressions:
ocean, the Pacific Ocean.
Learn to use numbers to describe facts.
Learn to use comparatives and superlatives with
adjectives and adverbs.
Revision
Can you translate the following sentences
1. 长江大约长6,300千米。
The Yangtze River is about 6,300 kilometers long.
2. 黄河长5,464千米。
The Yellow River is 5,464 kilometers long.
3. 明长城大约有8,850千米长。
The Ming Great Wall is about 8,850 kilometers long.
Qomolangma is 8,848.86 meters high and so is very dangerous to climb.
4. 珠穆朗玛峰高8,848.86米，所以攀登起来很危险。
The Yangtze River is about 6300 kilometers long.
The Yellow River is 5464 kilometers long.
The Great Wall in Ming dynasty is about 8,850 kilometers long.
Qomolangma is 8,844.43 meters high and so is very dangerous to climb.
What can you get from the four sentences
长、宽、高、深的表达法： 基数词+单位词+形容词（long, wide, high, deep等）。当基数词大于1时，单位词用复数形式。
e.g. The basketball player is 2 meters tall.
The river is only 2 meters wide/deep.
The mountain is about 2 thousand meters high.
The river is about two kilometers long.
The is .
2
Now please change the subjects to make sentences with the number 2
Grammar Focus
What’s the highest mountain in the world Qomolangma.
How high is Qomolangma It’s 8,848.86 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
Let's study more sentences and find out the rules.
1) It’s a lot bigger than the population of the US.
2) China is over 5,000 years old. It has a much longer
history than the US.
3) Qomolangma is higher than any other mountain in the
world.
1) The Sahara is the biggest desert in the world.
2) The Nile is the longest river in the world.
3) China has the biggest population in the world.
4) China is almost as big as the US, and it is the biggest country in Asia.
5) This makes it the longest wall in the world.
6) It’s the most famous part.
7) One of the world’s most dangerous sports is mountain climbing, and
one of the most popular places for this is the Himalayas.
Let's study more sentences and find out the rules.
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，表示“较…...”或“更……一些”；
最高级（Superlative form）：三者及三者以上比较，表示“最……”形容词最高级前一般要加定冠词the，副词最高级前的the可以省略。
语法归纳
形容词和副词的比较级和最高级
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
old older/elder oldest/eldest
far farther/further farthest/furthest
1. “比较级+than any other+可数名词单数+其他”
=“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。
该结构可与最高级结构互换
e.g. The bag is cheaper than any other bag in the store.
=The bag is cheaper than the other bags in the store.
=The bag is the cheapest in the store.
二、比较级的用法
2. “比较级+and+比较级” 表示 “越来越…… ”
e.g. The weather is getting warmer and warmer.
3. “the + 3. 比较级, the + 比较级” 表示 “越……，就越……”
e.g. The more you practice, the better you’ll play pipa.
4. “the + 比较级 + of the two” 表示 “两者之中更……的那一个”
e.g. Susan is the taller of the two girls.
5. “数词 + times + 比较级 + than” 表示 “……是……的几倍 ”
e.g. The elephant weighs ten times more than the panda.
6. 比较级前可加much, a lot, a bit, a little, even, far等词修饰。如：
You must work much faster.
You look a lot happier than you did yesterday.
This book is even more useful than that one.
7. 比较级前还可加其他表示数量的词。如：
My sister is ten years younger than me.
We reached here two days earlier than the others.
三、最高级的用法
1.（the + ）最高级 + in/of 短语
该结构意为“……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.
3. “the + 序数词 + 最高级 + 单数名词 + in …”
该结构意为“......是……中的第几……”
The Yellow River is the second longest river in China.
of与in都有“在......当中”的意思。但它们有严格的区别。用of的时候,主语同of后面的词是指同一类的人或物。而用in的时候,主语同in后面的词是指不同类的人或物。
1. The Amazon River is one of the _________ rivers in the world. It’s a little ________ than the Yangtze River.
2. Qomolangma is 8,848.86 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.
Practice
Fill in the blanks with the correct forms of the words in the box.
4a
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n. 大海，海洋
21
Write two comparisons about two topics. Write true facts.
4b
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.
Two cities: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Two animals: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
策略：可以比较城市的面积、人口、历史等
策略：可以比较动物的身高(身长)、体重、奔跑速度、外貌特征以及寿命等
Monkey
Dog
A dog is bigger than a monkey.
A monkey is smaller than a dog, but it climbs a tree faster
than a dog.
Singapore
Kuala Lumpur
Kuala Lumpur is as modern as Singapore.
Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumper.
Write five questions using comparisons. Then ask your partner your questions.
4c
1._____________________________________________________
2._____________________________________________________
3._____________________________________________________
4._____________________________________________________
5._____________________________________________________
What is the highest building in our city
What is the busiest subway station in our city
What is the largest shopping mall in our city
Which is the biggest park in our city
Which is the longest road in our city
22
Language points
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。
此句意为“世界上没有和太平洋一样大的海洋”，表示“太平洋是世界上最大的海洋” ，表示最高级含义，可与表示最高级的句子进行转换。
No ocean in the world is as big as the Pacific Ocean.
(教材P52 4a)
as big as 和……一样大
17
Exercise
1. —Are you going to the airport by bus (2021 江西)
—I’d rather take a taxi. It’s _____.
A. quicker B. cheaper C. the quickest D. the cheapest
2. —The Chinese language is more and more popular.
—Exactly! It’s becoming a _____ language skill in the international
community. (2021 安徽)
A. similar B. difficult C. necessary D. traditional
一、单项选择
A
C
3. Protecting ourselves is one of ______ things we must do. (2021 重庆A卷)
A. important B. more important
C. most important D. the most important
4. Bill lives _____ to school than Peter. (2021 天津)
A. close B. closed C. closer D. the closest
D
C
5. With the help of 5G technology, the apps on the smart phone can
provide ______ functions for the users than before. (2021 四川成都)
A. many B. more C. most
B
6. It’s unbelievable that mountains can grow. According to a recent survey, Qomolangma has risen ______ than before. (2021 云南昆明)
A. low B. lower C. high D. higher
D
7. The more ______ you drive, the ______ you are. (2021 黑龙江大庆)
A. careful; safer B. carefully; safer
C. carefully; safely D. careful; safely
8. Children usually play this kind of word game ______ than grown-ups.
(2021 福建)
A. well B. better C. best
B
B
9. —I think this book is _____ than that one. (2021辽宁丹东)
—You’re right. I prefer that one.
A. more popular B. more useful
C. less interesting D. less boring
10. —Which country has a _____ population, China or Canada
— China. Canada is a lot _____ crowded than China. (2021 四川达州)
A. bigger; less B. bigger; more
C. smaller; less D. smaller; more
C
A
1. China is _______ (large) than any other country in Asia.
= China is the _______ (large) country in Asia.
2. Our city is becoming more and more _________ (beautiful).
3. The _____ (much) we do for the old people, the _______ (happy) we’ll be.
4. My brother is the ______ (tall) of the two boys in the picture.
二、用括号中所给单词的适当形式填空
5. Her bedroom is twice _________ (big) than mine.
6. Mrs. Smith looks much __________ (young) with her new hairstyle.
7. China is one of __________________(ancient) countries in the world.
8. The Yellow River is the second ________ (long) river in China.
taller
larger
largest
beautiful
more
happier
longest
bigger
younger
the most ancient
Summary
New words and expressions
Grammar
ocean
the Pacific Ocean
Homework
Which place is the best for our school trip
Our school is going on a school trip in the city. Which is the best place to go to Can you give some advice and why Work in groups of 5 and report to the class. Remember to use comparisons.
Example:
We think ______ is the best place for us to go on a school trip. Of all the places, it is the ________. And we can also ______ . So we all think it is a good idea to visit________________.
谢谢
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