人教版八年级下册Unit 7 What’s the highest mountain in the world? SectionA grammar focus -4c(共35张PPT)

(共35张PPT)
Unit 7
What’s the highest mountain
in the world?
Section A
Grammar Focus -4c
To learn to use comparatives and superlatives with adjectives and adverbs

To learn new words: the Pacific Ocean…
Teaching goals






Can you introduce Qomolangma —the Most Dangerous Mountain in the world?
Qomolangma
Facts
Achievements
Spirits
Description:
1)danger:
___________________
2)popularity:
___________________
Location:
____________________
Height:______________
Weather:
____________________
____________________

1953:
_________________
1960:
_________________
1975:
_________________


the world’s most dangerous
the most popular place for…
southwestern part of China
8844.43 meters
thick clouds、snow hard、freezing weather…
the first people to reach
the first Chinese team….
the first woman to …
chanllenge themselves
never give up
be stronger than nature
Reason:
_____________
Spirit:
__________________________
Review
Can you translate the following sentences?
长江大约长6,300千米。
The Yangtze River is about 6,300 kilometers long.
Review
Can you translate the following sentences?
黄河长5,464千米。
The Yellow River is 5,464 kilometers long.
Review
Can you translate the following sentences?
明朝的长城大约有8,850千
米长。
The Great Wall in Ming dynasty is about 8,850 kilometers long.
Review
Can you translate the following sentences?
珠穆朗玛峰高8,844.43米，
所以攀登起来很危险。
Qomolangma is 8,844.43 meters high and so is very dangerous to climb.
Grammar Focus
朗读“语法聚焦”中的问句和答语，
读一读含“数字”的短语。
2.观察并总结：
8,844.43 meters high，1,025 meters deep，
6,671 kilometers long，这些都是用：
+ + (long, high, wide, deep…)构成的
3.练一练：
（1）2500米深 ，
（2）35千米宽 .
基数词
量词
长/高/宽/深
2500 meters deep
35 kilometers wide
Grammar Focus
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.

Discussing：
1. 比较级 最高级的构成.
2. 比较级的用法及注意事项。
3. 最高级的用法。

Discussing：
大多数形容词和副词有三个等级：
原级、比较级、最高级。
形容词和副词比较级 最高级的构成
1.构成的规则变化:
(1)词前
(2)词尾
2.构成的不规则变化:

1. 形容词、副词比较级和最高规则变化和不规则变化。
规则变化
1) 一般情况下，单音节或双音节的形容词
（或副词）比较级＋er ， 最高级＋est
如：
clever－cleverer－cleverest
few－fewer－fewest
small－smaller－smallest等。
2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如：
nice－nicer－nicest cute－cuter－cutest large－larger－largest
3) 以辅音字母＋y结尾的变y为i＋er或est
如: easy－easier－easiest
happy－happier－happiest
再如：early , busy , heavy , dirty , lazy也如此。
4) 元音+辅音（重读）双写＋er 或 est
fat－fatter－fattest
2. thin－thinner－thinnest
3. hot－hotter－hottest
4. red－redder－reddest
5. wet－wetter－wettest
6. big－bigger－biggest
5) 多音节和部分双音节的词＋more构成比较级，＋the most构成最高级。如：
beautiful － more beautiful － the most beautiful
又如: delicious, popular, important, interesting, expensive, creative
双音节的词如:
careful － more careful － the most careful
useful － more useful － the most useful
b) 不规则变化：
good —better — best well —better — best
bad－worse － worst
many, much — more — most
far — farther —farthest (距离远)
far — further — furthest (程度深)
c)“one of + the + 形容词的最高级 + 复数名词”，意为“最……之一”。如：
Miss Wang is one of the most popular
teachers in our school.
王老师是我们学校最受欢迎的老师之一。
1. good
2. comfortable
3. big
4. happy
5. cheap
6. many
7. difficult
8. little
better best
more comfortable most comfortable
bigger biggest
happier happiest
cheaper cheapest
more most
more difficult most difficult
less least
Practice
1. 同级比较
① as + adj./adv. + as
e.g. She is as thin as Lily.
He writes as carefully as Linda.
② not + as/so + adj./adv. + as
e.g. Tony didn’t run so fast as Carter.
形容词和副词比较等级的用法
2.形容词和副词比较级的用法
1.Who runs faster, he or she?
2.He runs faster than she.
3.He runs much faster than she.
4.He becomes healthier and healthier.
5.The more you exercise, the healthier you will be.
6.She is less healthy than he.
1.表示两者之间的选择,
可用“Which/Who … + 比较，…or…?”.
2.表示两者之间的比较，通常用连词 than 引导，
表示“更······一些”．
3.much/far/a lot, even ,still ,a little/a bit …
修饰比较级,表示程度.
Who runs faster, he or she?
He runs faster than she.
He runs much faster than she.
4. “比较级+and+比较级”表示“越来越……”
5. “the+比较级 , the + 比较级”表示“ 越…, 越 …”
6. 表示不及另一方时，用“less+原级+than…”
　 (双音节和多音节词)
He becomes healthier and healthier.
The more you exercise, the healthier
you will be.
She is less healthy than he.

He is healthier than she.

Shanghai is becoming more and more modern.
1.比较级 + and +比较级 越来越…
2.the+比较级 , the + 比较级　 越…, 越 …
3._______________you are, _________mistakes you
will make. (你越仔细，做错的题目就越少）
4. __________you eat, _________you’ll be.
(你吃得越多,就越胖)
5. Alice writes well. Mary writes _________________
than she. (甚至更好）

The more careful
the fewer
The more
the fatter
1.The girl becomes ______________________.
(越来越漂亮）
more and more beautiful
2. The weather is getting _________________.
(越来越槽糕）
worse and worse
even / still better
1.表示三者或三者以上比较,可用”Which/Who …
+最高级,…,…or …?”表示.
2. 最高级+of/among (同类比较) in… (范围比较)

4.one of +
形容词最高级
+名词复数表示“最… 之一”
3. 序数词修饰最高级
3. 形容词和副词的最高级的用法
Who is the tallest, Tom , Mike , or Jack?
Tom is the tallest of the three.
Mike is the second tallest student in our class.
Jack is one of the tallest students in our class.
Tom runs (the) fastest in our class.

1.Hainan is a very large Island .It is the
second _________ island in china. (large)
2.Our teacher is as ______ as before. (busy).
3.He is ______________ among us. (careful)
4.Li Lei jumped far ______ than Jim. (far)
5.The busier he is, the ________ he feels. (happy)
6.I think Yao Ming is one of ____________
basketball players in NBA. (hot)

busy
the most careful
farther
happier
largest
the hottest
完成句子
Fill in the blanks with the correct forms of the
words in the box.
big much popular long old high
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.
longest
longer
high
popular
4a
3. No ocean in the world is as _____ as the Pacific Ocean.


4. Although Japan is _______ than Canada, it is _______ smaller.
big
older
much
太平洋
n. 大海；海洋
e.g. Two rivers：_________________ and
_________________
____________________________________________________
___________________________________________________________________________
4b. Write two comparisons about two topics. Write true facts.
the Yangtze River
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 animals: ___________ and _________
1. ___________________________________
2. ___________________________________
_____________________________________
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.
Two cities: __________and _______________
1. ___________________________________
2. _____________________________________
_______________________________________
Singapore Kuala Lumpur(吉隆坡）
Kuala Lumpur is as modern as Singapore.
Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur.
4c. Write five questions using comparisons. Then ask your partner your questions.
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
What is the highest building in our city?
Who is the oldest people in our city?
What is the most popular street in our city?
What is the most delicious food in our city?
Where is the busiest road in our city?
1. Failure is the mother of ______.
A .success B .succeed C .successful
2. Of all the students, Angie is the __________but studies __________than others.
A .shorter, best B .shortest, better
C .shortest, best
3. As students, we must work hard to make our country _______.
A .rich and stronger B .richer and strong
C .richer and stronger


4. John often talks _____ but does _____, so all of us think he is a good boy.
A .few, fast B .less, more C. more, less
5. The boy didn’t run ____ to catch the bus.
A .fast enough B .enough fast
C .quick enough
6. About one third of the population of the country _____ farmers.
A .is B .are C .were
The population of China ____ _____ than that of Canada.
______ is the population of my hometown?
7. I don’t think this question is ____than that one .It is ____of these questions.
A. easier, more difficult
B .easier, the most difficult
C. easiest, more difficult
8. Mr. Zhang is one of ____in our school
A .the more popular teachers
B .most popular teachers
C .the most popular teachers
9. He is always the first student ______ (come) and the last ______ (leave) in my class.
10. Tom succeeded in _____ (reach) the top of the mountain.
Fill in the blanks with the correct forms of the
words in the box.
big much popular long old high
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.
longest
longer
high
popular
4a
3. No ocean in the world is as _____ as the Pacific Ocean.


4. Although Japan is _______ than Canada, it is _______ smaller.
big
older
much
太平洋
n. 大海；海洋
Homework
Try to write as many sentences as you can using comparisons. (10 sentences at least)