Unit 7 What's the highest mountain in the world? Section A (Grammar Focus~4c) 课件（26张PPT） 2023-2024学

(共26张PPT)
Unit 7
What’s the highest mountain in the world
Section A (Grammar Focus~4c)
新课导入
What’s the highest mountain in the world
Qomolangma is covered with snow all the year round.
It’s 8844.43 high, and the highest mountain in the world.
Which is the deepest salt lake in the world
The Caspian Sea is the deepest of all the salt lakes.
2
1
能记住并会运用下列单词及短语:ocean,
the Pacific Ocean
能记住形容词比较级和最高级的构成,会运用比较级和最高级的几个句型
预习检测
1. China is larger than _______ in Africa.
A.any other country　　 B.other countries
C.the other country D.any country
2. —What a nice watch it is!
—Yes. It's _______ one of all.
A.expensive B.more expensive
C.the most expensive D.much more expensive
3. Shanghai is one of _______ in the world.
A.bigger city B.the biggest city
C.the biggest cities D.bigger cities
A
C
C
4. Alan is as _______ as Lucy in their class.
A.tall B.taller
C.tallest D.the taller
5. — Which is ____, the sun, the moon or the earth
— The moon is.
small B.smaller
C.smallest D.the smallest
D
A
知识梳理
New words
e.g. Ocean levels are rising.
海平面正在上升。
1.ocean n. 大海；海洋
2.the Pacific Ocean n. 太平洋
e.g. The river flows into the Pacific ocean.
这条河流入太平洋。
重点探究
形容词、副词的比较级和最高级
阅读Grammar Focus中的句子，找出每个句子中的形容词或副词比较级和最高级。
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.
形容词和副词的比较级和最高级
1.大多数形容词和副词都有三个级。
1) 原级: 常用结构 as ... as... 像..….一样
e.g. Zhang Hong is as tall as Tom. 张红和汤姆一样高。
2) 比较级 (用于两者之间的比较)
常用结构：形容词比较级＋than ...
e.g. He is taller than me. 他比我高。
3) 最高级(用于三者或三者以上的比较)，
常用结构: the + 形容词的最高级＋of / in ...
e.g. He is the tallest of the three. 他是这三个人中最高的。
形容词和副词的比较级和最高级
规则 原级 比较级 最高级
（1）一般单音节词在词尾加-er和-est long fast longer faster longest
fastest
（2）以“e”结尾的单音节词在词尾加-r和-st nice late nicer later nicest
latest
规则 原级 比较级 最高级
（3）重读闭音节，词尾只有一个辅音字母，须双写最后一个辅音字母，再加-er或-est big hot sad glad bigger hotter sadder gladder biggest
hottest
saddest
gladdest
（4）辅音字母+y结尾，变y为i，再加-er和-est heavy angry funny heavier angrier funnier heaviest
angriest
funniest
不规则变化
原级 比较级 最高级
good/well好的 better更好的 best最好的
bad差的，ill坏的 worse更差的；更坏的 worst最差的；
最坏的
many/much多的 more更多的 most最多的
little少的 less更少的 least最少的
原级 比较级 最高级
old年老的；古老的 older较老的；较旧的 oldest最旧的；最年长的
elder年长的 eldest最年长的
far远的 farther（指距离）更远的 farthest最远的
further（指距离和抽象概念）较深远的 furthest（指距离和抽象概念）最深远的
比较级用法
用法 例句
(1)双方比较，表示一方超过另一方时，用“比较级+than”结构 China is larger than Italy.
中国比意大利大。
(2)用于“less+原级+than”（注意此结构不用于单音节词） The book is less interesting than that one.
这本书不如那本书有趣。
(3)倍数+比较级+than The box is three times bigger than that one. 这个箱子是那个的三倍大。
比较级用法 例句
(4)“比较级+and+比较级”表示“越来越……” Our country is becoming stronger and stronger.
我们的国家正变得越来越强大。
(5)“the+比较级……，the+比较级……”表示“越……，就越……” The more, the better.
多多益善。
(6)the+比较级+of the two+名词复数 The taller of the two boys is my brother. 两个男孩中，较高的那一个是我的哥哥。
最高级用法 例句
(1)the+形容词最高级+名词+表示范围的短语或从句 Spring is the best season of the year.
春天是一年中最好的季节。
(2)“one of the+最高级+复数名词”表示“最……之一” Kobe is one of the best basketball players in NBA.
科比是NBA最好的篮球运动员之一。
形容词和副词比较级的其他用法
形容词和副词比较级的修饰语
1. 比较级前可加much, a lot, a bit, a little, any, no, some, even, still等词修饰。
e.g. You must work much faster.
You look a lot happier than you did yesterday.
2. 形容词最高级可被second, third等序数词修饰。
e.g. The building is the second tallest in this city.
3.用于“as...as...”结构中，否定形式为not as/ so...as...
e.g. The picture is not so good as that one.
4.表示“A是B的......倍”时，用A+谓语动词+倍数+as+原级+as+B.
e.g. Our school is twice as large as theirs.
5. 修饰形容词原级的词：very, too, so ,enough, quite等。
e.g. The girl is so beautiful.
4a. Fill in the blanks with the correct forms of the words in the box.
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
much
longest
longer
high
popular
big
older
4b. Write two comparisons about two topics. Write true facts.
Two rivers: _________________ and _________________
__________________________________________________________________________________________________________________________________________________
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 River is the longest river in China.
Two cities: _________________ and _________________
1.________________________________________________________________________2.________________________________________________________________________
Singapore
Shanghai
Shanghai is as modern as Singapore.
Shanghai is bigger than Singapore and has a larger population than Singapore.
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.
4c. Write five questions using comparisons.
Then ask your partner your questions.
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
What is the biggest park in our city
What is the longest road in our city
活动小结
当堂检测见DCF课件
通过以上活动，我们知道了比较级用于1.___________之间做比较，最高级用于2.________________做比较。规则形容词和副词的比较级是在词尾加3._______，最高级是在词尾加4.________，一般情况下，最高级前需加5.________。
两者
三者或三者以上
er
est
the
一、用所给词的适当形式填空。
当堂检测
1.Which mountain rises _________ (high), Mount Tai, Mount Huang or Mount Tianzi
2.I think mountain climbing is ______________ (dangerous) than running.
3.Our country is becoming ______ and _______________ (beautiful).
4.Lin Tao is one of ____________(lazy) students in the class because he never gets to school on time.
5.This road is almost as _____ (long) as that one.
highest
more dangerous
more more beautiful
the laziest
long
二、按要求改写句子，每空一词，含缩写词。
1．The lake is about 20 meters deep．(对画线部分提问)
_______ _______ is the lake
2．Poyang Lake is the biggest freshwater lake in China．(对画线部分提问)
_______ _______ the biggest freshwater lake in China
3．This river is longer than the other rivers in the country．(改为同义句)
This river is _______ _______in the country．
4. This mountain is 1,500 meters high. That mountain is 1,500 meters high．
(合并为一句)
This mountain is ______ ______ ______that one．
How deep
What is
the longest
as high as
课堂总结
Unit 7
Section A (Grammar Focus~4c)
重点词汇及短语：
__________________________________
__________________________________
__________________________________
__________________________________
ocean
much older
all the salt lakes
the Pacific Ocean
one of the oldest countries
in our city
any other
as big as
in the world
形容词、副词的比较级和最高级:
比较级用于1._______之间做比较，最高级用于2.________________做比较。规则形容词和副词的比较级是在词尾加3._____，最高级是在词尾加4._____，一般情况下，最高级前需加5._____。
两者
三者或三者以上
er
est
the