(共19张PPT)
Unit7 What's the highest mountain in the world
SectionA(Grammar Focus-4c)
语法公开课
一、教学目标
1.1. To learn to use big numbers to describe facts
2. To learn to use comparatives and superlatives with adjectives and
adverbs
二、教学重点及难点
1.1. To learn to use big numbers to describe facts
2. To learn to use comparatives and superlatives with adjectives and
adverbs
Enjoy the following song,discuss what the name of song is.
stronger
原级：strong
最高级：
strongest
形容词、副词的原级、比较级和最高级
一、没有比较，用原级比较级主要用于两者之间作比较。
最高级主要用于三者或三者以上进行比较。
二、形容词、副词原级句式：as...as
1.肯定形式: A和B一样...
A+be 动词+as+形容词原级+as+B
A+实意动词+as+副词原级+as+B
2.否定形式: 表示:A不如B
A+be 动词+not as+形容词原级+as+B
A+be 动词+not so+形容词原级+as+B
A+don't/doesn't/didn't+实意动词+as+副词原级+as+B
A+don't/doesn't/didn't+实意动词+so+副词原级+as+B
三、形容词、副词的比较级句式
1.肯定结构：表示“前者比后者...更”
A+be动词+形容词比较级＋ than +B
A+实意动词+副词比较级＋ than +B
2.表示俩者之中较... 用the+比较级+of the two
3.表示“越来越...”
用 比较级+and +比较级； more and more+原级
4.表示“越...就越...” the+比较级，the+比较级
5.程度副词much, a lot,a little,less,far,even+比较级。
口诀：两多两少一远一甚至+比较级
6.比较级+than any other+单数名词,比其他的任何…都,表示最高级
=形容词或副词的最高级
四、形容词、副词的最高级句式
1.the + 形容词/副词最高级+in/ of/ among...在...中最...
2.the +序数词+ 形容词最高级+名词，表示 第几...
3.one of the+ 形容词最高级+名词复数，表示 最...之一
注意：最高级前有物主代词、名词所有格等修饰时，其前不加the。
五、形容词、副词比较级和最高级变化规则
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
④辅元辅，且重读双写辅音字母再加 -er或 -est
⑤部分双音节词和多音节词
比较级：more+多音节形容词副词原级
最高级：most+多音节形容词副词原级
big—_______—_______
slowly—___________—___________
beautiful—______________—______________
bigger
biggest
more slowly
most slowly
more beautiful
most beautiful
巧记：大big红red胖fat瘦thin湿wet热hot悲sad
原级 比较级 最高级
good / well better best
bad/badly 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：两多两好两坏病一少一老一远
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.
翻译：Grammar Focus
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.
世界上最高的山是什么？
珠穆朗玛峰是多高？
它比任何其他山脉高。
世界上哪个盐湖最深？
里海是世界上最深的盐湖。
是的，它比美国古老
你知道中国是世界上最古老的国家之一吗？
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.
Fill in the blanks with the correct forms of the words in the box in 4a.
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n. 大海，海洋
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。
Exercise1
Write two comparisons about two topics. Write true facts.
4b
Two rivers: _______________ and _____
____________
1. ______________________________________
________________________________________
2. ______________________________________
_____________________________________
Two cities: __________ and ___________
1. __________________________________
2. __________________________________
Two animals: __________ and ___________
1. __________________________________
2. __________________________________
the Yangtze River the
For example:
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.
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
Exercise2:砸金蛋游戏:
1
2
3
4
1.The girl becomes ＿＿_____________________.
(越来越漂亮）
2. The weather is getting _____________________.
(越来越槽糕）
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）
6.李雷比班里任何一个学生跑得都快。（比较级+ than any other）
_____________________________________.
more and more beautiful
worse and worse
The more careful
the fewer
The more
the fatter
even / still better
Li Lei runs faster than any other student.
一、单项选择
1. China has a ______ population than America.
A. more B. much more C. much large D. much larger
2. Xi’an 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.
large B. largest C. larger D. as large as
4.Staying with families and friends in our free time is one of _____things.
A. the happiest B. happier C. the happy D. happiest
D
C
B
A
Exercise2
5. Qomolangma is higher than _____ in the world.
A. the other mountain B. another mountain
C. any other mountain D. any mountains
6. —I don’t think history is more useful than physics.
—I disagree. In my opinion, history is______physics.
A. as useful as B. not so useful as
C. less useful than D. the most useful of
7. （武威中考）The number “23,456”can be read as “ ”.
A. twenty-three thousand, four hundred and fifty-six
B. twenty-three thousand and four hundred fifty-six
C. twenty-three thousand and four five six
D. twenty-three thousand, four five six
C
A
A
Exercise2
用括号中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 table tennis is as _________ as soccer. (excite)
3. Which of these books would you like ________ (much)
4. Take exercise one hour a day, and you will become ________than before. (strong)
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
Exercise2
Thank you for listening!
感谢观看
Thanks
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