Unit 7 What's the highest mountain in the world? Section A（3a-Grammar Focus）课件(共16张PPT)2023-2024学年人教

(共16张PPT)
Unit7
What’s the highest mountain in the world
Section A（Grammar Focus）
Lead in
Let’s learn more about the geography facts.
List the three longest rivers in the world
1. ________________is the longest river in the world.
2. ________________is the second longest river in the world.
3._________________is the third longest river in the world.
4. _________________is longer than any other river in the world.
The Nile
The Amazon River
The Yangtze River
The Nile
Lead in
Let’s learn more about the geography facts.
1. Qomolangma is ___________________ in the world.
2. The Sahara is _____________________ in the world.
3.Great Wall is ______________________ in the world.
4. The Caspian Sea is _________________________ in the world.
the highest mountain
the biggest desert
the longest wall
the deepest salt lake
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.
Grammar Focus
一、形容词、副词的比较级和最高级
概述：
英语中的形容词和副词常用三种形式来表达事物的等级差别，即原级、比较级和最高级。
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。
Presentation
最高级规则变化口诀：
比较级，最高级，很容易，一般词尾加er,est。
(cheap-cheaper-cheapest)
词尾若有哑音e, 直接就加r, st。
(close-closer-closest)
辅元辅，闭音节 末尾辅音字母要双写。
(big-bigger-biggest)
辅音字母若加y, 记得把y变为i。
(friendly-friendlier-friendliest)
多音节，考考你，more, most到底加哪里？
(popular-more popular-most popular)
常用的不规则形容词比较级和最高级变化形式
原级 比较级 最高级
good/well better best
many/ much more most
bad/ill/badly worse worst
old older/elder oldest/eldest
far farther/ further farthest/
furthest
1.肯定形式: A和B一样...
形容词、副词原级
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
as...as
形容词、副词的比较级(用于两者之间的比较):
than
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.比较级形容词可以用 much,a little, a lot, even, far,
1.“the + 形容词/副词最高级”in/ of/ among...在...中最...
最高级的用法
三者或三者以上
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
Presentation
e.g. Tom is the tallest student in the class.
= Tom is taller than any other student in the class.
= Tom is taller than the other students in the class.
= No other students are taller than Tom.
总结： any other + 名词单数
the other + 名词复数
比较级和最高级的转换
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.
3. No ocean in the world is as _____ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is _______ smaller.
longest
longer
high
popular
4a
big
older
much
Write two comparisons about two topics. Write true facts.
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.
4b
Presentation
Two cities: _________ and ___________
1. ___________________________________________.
2. ___________________________________________
____________________________________ .
Shanghai Sydney
Shanghai is as beautiful as Sydney
Shanghai is much smaller than Sydney. Sydney is
almost 2 times as big as Shanghai
Two animals: _____________ and _________
1. _______________________________.
2. ___________________________________________
_______________________________ .
a fish
A shark is bigger than a fish.
A fish is smaller than a shark. A shark eats more than a fish.
a shark
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 biggest supermarket in our city
Who is the tallest student in our class
Who is the shortest student in our class
Who sings the best in our class
Presentation
Thank you !