(共27张PPT)
Unit7 What's the highest mountain in the world
SectionA(Grammar Focus-4c)
语法公开课
一、语言能力
词汇: ocean, the Pacific Ocean
二、学习能力
复习并掌握形容词和副词三个等级原级；比较级和最高级的用法。
三、思维品质
鼓励学生仔细观察并善于发现总结规律
四、文化意识
通过本节课学习,提高同学们对于保护濒危野生动物的意识。
Enjoy the following song,discuss what the name of song is.
stronger
原级：strong
最高级：
strongest
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.
Grammar Focus：翻译
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？
语法探究1：如何询问和表达物体的长度、宽度、高度、深度等呢？
观察并总结:
回答：It's 8,844.43 meters high.
______+______+___________(long, high, wide, deep…)构成
基数词
度量词
长\高\宽\深
主+be+
1．—What’s the _______ of the building —It’s 236 metres ________.
A.high; high B.height; height C.high; height D.height; high
2．这张桌子有5米长。
The desk is .
3．这块岩石长5米，宽2米。
The rock is five meters long and__________________.
five meters long
2 meters wide
句型:How+long (wide, high, deep, big, heavy…)+谓语+主语+其他？
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.
此句型用比较级表达最高级含义
Grammar Focus：找出比较级和最高级
形容词和副词的原级,比较级,最高级
原级
Positive form
比较级Comparative form
最高级Superlative form
没有比较含义,“……”
两者间比较,“更……”
三者及三者以上比较,“最……”
注意：某些形容词和副词只用原级，如：perfect，excellent，dead等。
一、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
Lucy doesn't study___ ____ ___Lily.露西不如莉莉学习努力。
Eric is ___ ___ ____ Jerry.埃里克和杰里一样高。
as
hard
as
as
tall
as
二、形容词和副词的原级的用法
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
1．This room is as ________ as that one.
A．bigger B．longer C．clearly D．clean
2．Daniel is _____ his brother. They are both 1.76 meters tall.
A．taller than B．as tall as C．so tall as
3．—This film is ____ that one. —I agree, so I like both of them.
A．as interesting as B．not as interesting as
C．more interesting than D．less interesting than
4．—Our classroom is ______ clean ______ yesterday.
—Sorry, I’ll clean it right away.
A．as; as B．so; as C．not so; as
巩固练习
√
√
√
√
三、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。
Our hometown is becoming ______ and ______ _________.
我们的家乡变得越来越美了。
higher
than
colder
colder
more
more
beautiful
四、形容词和副词的比较级的用法
（1）“A+谓语动词+比较级+than+B”表示“A比B更……”。
The Himalayas are _______ ______ the Alps.
（2）“比较级+and+比较级”表示“越来越……”；多音节词和部分双音节词用“more and more+原级”。
It's getting _______ and _______.
天气变得越来越冷了。
（3）“one of the+形容词最高级+复数可数名词”意为“最……的……之一”。
One of ____ ______ __________ languages is English.
最重要的语言之一是英语。
the most important
（4）“the+序数词+形容词最高级+单数可数名词”意为“第几最……”。
The Yellow River is ____ ________ ________ river in China.
黄河是中国的第二长河。
the second longest
巩固练习
1．Qomolangma is the _________ mountain in the world.A．high B．higher C．more higher D．highest2．London is one of the ________ famous ________ in the world.A．/; city B．most; cities C．more; cities D．most; city
√
√
（2）“比较级+than any other+名词单数形式”或“比较级+than the other+可数名词复数形式”可与“（the+）最高级+of/among/in...转换”。
The movie is the most interesting of all.
这部电影是所有电影中最有趣的。
=The movie is more interesting than _____ ______ movie.
=The movie is more interesting than ____ ______ movies.
any other
the other
五、原级、比较级与最高级之间的转换
（1）as...as结构和最高级的转换
No ocean in the world is as big as the Pacific Ocean. 太平洋是世界上最大的海洋。
=The Pacific Ocean is ____ ________ ocean in the world.
the biggest
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
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.
1.Lucy is____________________(fat) of the three girls.
2.Tom jumped_____________(high)than any other boy in his class.
3.The ________ (much) we do for the old people, the __________ (happy)
we’ll be.
4.Tony didn't run as__________(fast) as Carter.
5.Spring is_____________(good) season of a year.
6.It is one of________________(heavy) bags in my room. .
the fattest
more happier
fast
higher
二、用所给单词的正确形式填空。
Exercises
best
the heaviest
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
一、单项选择
1.Protecting ourselves is one of _______ things we must do.
A. important B. more important
C. most important D. the most important
2.—What’s the second ________ river in China
—The Yellow River.
A．longer B．the longer C．longest D．the longest
3.High-speed trains are much _______ than traditional ones.
A. fast B. faster C. slow D. slower
D
C
B
Exercises
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
4b
Write two comparisons about two topics. Write true facts.
e.g.Two rivers: ________________ and _________________
_____________________________________________________________________________________________________________________________________________
the Yangtze River
the Amazon River
The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.
The Yangtze River is almost as long as the Amazon River.
Two cities: and
Ji Nan
Bei Jing
population of Ji Nan Population of Bei Jing
8,700,000 21,540,000
The population of Jinan is not___ _____ _____ that of Beijing.
The population of Beijing is ______ ______than that of Jinan,
as large as
much large
Two cities: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Shanghai Sydney
Shanghai is not as big as Sydney.
Sydney is much bigger than Shanghai.
Sydney is almost 2 times as big as Shanghai.
Area:12368 sq km
Area:6340 sq km
4c
Write five questions about Chengdu using comparisons. Then discuss your questions in groups.
1. _________________________________
2. _________________________________
3. _________________________________
4. _________________________________
5. _________________________________
What is the highest building in Chengdu
What is the largest single buiding in Chengdu
Which is the busiest road in Chengdu
What is the most popular street in Chengdu
What is the most delicious food in Chengdu
Thank you for listening
