Unit 7 第3课时 (Section A 2d &GF-4c)（教学课件）-八年级英语下册同步备课系列（人教版）

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Section A 2d&GF-4c
Contents
情景导入
1
语法探究
2
应用实践
3
迁移创新
4
回顾总结
5
考点速递
6
随堂小练
7
家庭作业
8
Language goals
01
02
03
04
语言能力
思维品质
文化意识
学习能力
能正确运用形容词副词的比较级和最高级对事物进行描述并对话。
通过讨论家乡之最,提升学生对家乡的热爱。
鼓励学生仔细观察并善于发现总结规律。
1.复习掌握比较级最高级的构成；
2.通过观察、对比和归纳，熟练掌握形容词和副词比较级和最高级的运用。
Look and say
Wow, that’s amazing.
Today let’s travel to
the Great Wall.
Guide: Feel free to ask me anything on today's Great Wall tour.
Tourist 1: How long is the wall
Guide: Ah, the most popular question! If we're only talking about the parts
from the Ming Dynasty, it's about 8, 850 kilometers long. This makes
it the longest wall in the world.
Tourist 2: Wow, that's amazing! Why did the ancient emperors build the wall
Guide: The main reason was to protect their part of the country. As you can
see, it's quite tall and wide. As far as I know, there are no other
man- made objects as big as this.
Tourist 3: Is Badaling part of the Ming Great Wall
Guide: Yes, it's the most famous part.
Read
可以随便做某事
朝代
正如
adj. 令人惊奇的
adj. 人造的
2d
curious
proud
surprised
What’s the
feeling of the
guide and tourists
What does the guide say about the wall
Read
It's quite tall and wide.
It's the longest wall in the world.
The ancient emperors built it
to protect their parts of the country.
There are no man-made objects as big as this.
Badaling is the most famous part of the Ming Great Wall.
The parts from the Ming Dynasty is about 8, 850 kilometers long
It's the longest wall in the world.
there are no other man- made objects as big as this.
Role-play
Pay attention to the colorful words.
How long is the wall
形容词副词比较级和最高级
大数的读法
What’s the highest mountain in the world Qomolangma.
How high is Qomolangma It’s 8,848.86 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
Underline the comparatives and superlatives.
形容词副词
比较级和最高级
Grammar
形容词和副词的三个比较等级
原级
比较级
最高级
两者间
“一样...”
两者比
“更...”
三者及以上比“最...”
China is almost as big as the US.
Lily studies not as hard as Amy .
Grammar Focus
同级比较的构成：
...as+___________+as....
形容词副词原形
一、同级比较的构成和运用
Grammar
一、同级比较的构成和运用
(1)肯定形式
as+原级+as(像……一样)
(2)否定形式
not + so (as) +原级+as(不如…那样)
同级比较
He runs as ______(fast )as you.
English is not so _______ (difficult)as science.
fast
difficult
Grammar
1.规则变化
(1)一般单音节词末尾加-er, -est . 如hard－harder－hardest
(2)以不发音的e结尾的单音节词加-r,-st，
nice － nicer － nicest；wide－wider－widest
(3)以辅音字母+y结尾的双音节单词，先把y变为i，再加-er,-est
early － earlier － earliest
(4)以一个辅音字母结尾的重读闭音节单词，
双写末尾字母再加-er,-est red － redder － reddest
(5)部分双音节词或多音节词在原级前加more,most
interesting more interesting most interesting
2.不规则变化 ,需牢记
good － better－ best bad/ill －worse －worst
little － less － least many/much － more －most
比较级
最高级
构成
二、比较级最高级的构成
(3)the＋比较级，the＋比较级，“越…，越…”，
The harder you study, the better grades you will get.
Grammar
(1)A+比较级+than+B “A比B更...”
Jim is older than Geoffrey.
(2)A+less+原级+than+ B “A不如B...”
The book is less interesting than that one.
(4)具体数字、实物、倍数等+比较级+than，与具体倍数比较。
This box is three times bigger than that one.
三、形容词副词比较级的运用
比较级的修饰词：
a little, a bit,far , even, a lot, much
(5)比较级+than any other+单数名词(表最高级)
“比其他任何的…都…”
The Nile is longer than the other rivers in the world.
比较级
运用
China is much older than the US.
Who sings better, Li Ming or Linda
The busier she is, the happier she feels.
三、形容词和副词比较级的运用
Grammar
Lin Tao is taller than any other student in his class.
(3)the+序数词+最高级+名词单数 表示“第几……的……”
The Yellow River is the second longest river in China.
Grammar
(1)The +最高级+of (in) (最……)
Spring is the best season of the year.
(2)“one of the+ 最高级+可数名词复数+in/of”， …是最…的之一
Beijing is one of the biggest cities in China.
注意：
最高级前有物主代词时，不再加the。
Wu Fen is my best friend.
最高级
运用
四、形容词副词最高级的运用
形容词最高级前必须加the；副词最高级前的the可省略。
China is one of the oldest countries in the world.
Amy works (the) hardest in Class 3.
Canada is the second largest country in the world.
Grammar
四、形容词副词最高级的运用
What’s the highest mountain in the world Qomolangma.
How high is Qomolangma It’s 8,848.86 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
数的读法与应用
=It’s 8,848.86 meters in height.
(1)数的读法.
将每三位数看做一个单位，自右向左依次为thousand千，
million百万，billion十亿。每个单位按百、十、个位向右读。
其中百位到十位之间要加入 and。
(2)表示确切的数量直接用基数词
Two hundred people were present at the meeting.
Grammar
数的读法与运用
(3)表示不确切的数量用hundred、thousand、million、
billion等复数再搭配介词of。
Hundreds of students are playing on the playground.
数的
读法与运用
Key words are helpful.
1. The Amazon River is one of the _________ rivers in the world. It’s a little ________ than the Yangtze River.
2. Qomolangma is 8,848.86 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
longest
longer
high
popular
big
older
much
太平洋
Fill in the blanks with the correct forms of the words in the box.
Practice
4a
Write two comparisons about two topics. Write true facts.
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
Practice
4b
Two animals: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Whales are almost as heavy as elephants.
whales elephant
Whales are heavier than elephants, but
elephants are the heaviest animals on land.
Write two comparisons about two topics. Write true facts.
Practice
4b
Pair work
Wow, that’s wonderful！
OK,our natural sightseeing tour is over.
Next I will take you to visit some kinds of animals.
Before that,let’s look around my hometown！
What is the ... in our city
Fill in the chart. Then ask your partner.
After that, try to make a report.
Pair work
What You Your partner
the highest building
the largest shopping mall
the biggest park
the longest road
the busiest subway station
“家乡之最”
Make a report in groups.
Show
Report
I am very honored to introduce our hometown to you. Xi’an is one of the ancient cities of China. It is clean and beautiful.
The XXX Park is the most famous park in Xi’an...
Welcome to Xi’an! I will take you around my town.
(3)the＋比较级，the＋比较级，“越…，越…”，
The harder you study, the better grades you will get.
(1)A+比较级+than+B “A比B更...”
Jim is older than Geoffrey.
(2)A+less+原级+than+ B “A不如B...”
The book is less interesting than that one.
(4)具体数字、实物、倍数等+比较级+than，与具体倍数比较。
This box is three times bigger than that one.
形容词副词比较级的运用
比较级的修饰词：
a little, a bit,far , even, a lot, much
(5)比较级+than any other+单数名词(表最高级)
“比其他任何的…都…”
The Nile is longer than the other rivers in the world.
比较级
运用
Summary
(3)the+序数词+最高级+名词单数 表示“第几……的……”
The Yellow River is the second longest river in China.
(1)The +最高级+of (in) (最……)
Spring is the best season of the year.
(2)“one of the+ 最高级+可数名词复数+in/of短语”， …是最…的之一
Beijing is one of the biggest cities in China.
注意：
最高级前有物主代词时，不再加the。
Wu Fen is my best friend.
最高级
运用
形容词副词最高级的运用
形容词最高级前必须加the；副词最高级前的the可省略。
Summary
v. 保护；防护
作及物动词, protect… against/from…“保护…免于…”。
其名词protection作不可数名词，意为“保护；防卫”。
1.The main reason was to protect their part of the country.
考点
protect
Language points
He wears sunglasses to protect his eyes against/from the strong sunlight.
It’s parents’ duty to provide protection for their children.
one of the +形容词的最高级+ 名词复数
意为“最……之一”, 当它作主语时,后面的谓语动词要用单数。
2.The Amazon River is one of the longest rivers in the world. It’s a littleis a little longer than the Yangtze River.
考点
one of the...
1
Language points
He is one of the tallest students in our class.
Shanghai is one of the biggest cities in the world.
She is one of the winners.
a little 在这里修饰比较级longer, 起强调、加强程度的作用。修饰比较级的词(组)还有much、 even、 still、 far、 rather、 a lot、 a bit等。
2.The Amazon River is one of the longest rivers in the world. It’s a littleis a little longer than the Yangtze River.
考点
a little
2
Language points
This book is a little thicker than that one.
John is a little taller than Mike.
This apple is a lot bigger than that one.
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
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
Homework
1.Review the new words and phrases .
2.Master the usage of the comparatives and superlatives.
3.(Optional)
Write a short report about your hometown using the
information we learned today.