(共50张PPT)
Unit 7 Period 3 (Section A Grammar-4c)
What’s the highest mountain in the world
新目标版 （Go for it） 八年级下
21世纪教育网（www.21cnjy.com)中小学教育资源及组卷应用平台
Objectives
To learn to use comparatives and superlatives with adjectives and adverbs
To learn new words: the Pacific Ocean…
教学目标
温故知新
ocean
the Pacific Ocean
n. 大海；海洋
n. 太平洋
Words review
Can you translate the following sentences
长江大约长6,300千米。
The Yangtze River is about 6,300 kilometers long.
黄河长5,464千米。
The Yellow River is
5,464 kilometers long.
明朝的长城大约有
8,850千米长。
The Great Wall in Ming dynasty is about 8,850 kilometers long.
珠穆朗玛峰高8,844.43米，
所以攀登起来很危险。
Qomolangma is 8,844.43
meters high and so is very
dangerous to climb.
The Yangtze River is about
6300 kilometers long.
The Yellow River is 5464 kilometers long.
The Great Wall in Ming dynasty is about 8,850 kilometers long.
Qomolangma is 8,844.43 meters high and so is very dangerous to climb.
What can you get from the above four sentences
Now let’s try to translate the sentences:
那个篮球运动员有两米高。
那条河只有两米深/宽。
这棵树有两米高。
那条河长两千米。
The basketball player is two meters tall.
The river is only two meters deep/wide.
The tree is two meters tall.
The river is about two kilometers long.
5. 这座山大约有两千米高。
6. 这个箱子大约有两米高/宽/长。
The mountain is about two thousand meters high.
The box is about two meters high / wide /long.
教学目标
新课讲解
Grammar Focus
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
— 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.
大多数形容词有三个级。
1. 原级:
Structure : as ... as... 像..….一样
e.g. Tim is as tall as Tom.
2. 比较级 (用于两者之间的比较):
Structure：形容词比较级＋ than ...
e.g. This box is bigger than that one.
形容词和副词的比较级和最高级
3. 最高级(用于三者或三者以上的比较):
Structure:
the + 形容词的最高级＋of / in ...
e.g. Tom is the heaviest in our class.
He is the most popular in our school.
规则变化
1) 一般情况下，单音节或双音节的形容词/副词比较级＋er， 最高级＋est。如:
clever — cleverer — cleverest
few — fewer — fewest
small — smaller — smallest 等。
形容词、副词的比较级和最高级
规则变化和不规则变化
2) 以e结尾的词，比较级＋r，最高级＋st 即可。
nice — nicer — nicest
cute — cuter — cutest
large — larger — largest
3) 以辅音字母＋y结尾的变y为i＋er或est
easy — easier — easiest
happy — happier — happiest
再如：
early, busy, heavy, dirty, lazy 也如此。
4) 重读闭音节，单辅音结尾的，双写这个辅音字母＋er 或 est的词：
① fat — fatter — fattest
② thin — thinner — thinnest
③ hot — hotter — hottest
④ red — redder — reddest
⑤ wet — wetter — wettest
⑥ big — bigger — biggest
5) 多音节和部分双音节的词需要在形容词原级前＋more 构成比较级，＋the most 构成最高级。如：
beautiful － more beautiful － the most beautiful
又如: delicious, popular, important, interesting, expensive, creative
双音节的词如:
careful － more careful － the most careful
useful － more useful － the most useful
少数单音节词也是这样，如：
pleased — more pleased — the most pleased
tired — more tired — the most tired
b) 不规则变化：
good — better — best
well — better — best
bad — worse — worst
many/much — more — most
far — farther —farthest (距离远)
far — further — furthest (程度深)
old — elder — eldest (长幼)
old — older — oldest (年龄)
三者或三者以上相比，表示最高程度时，用“the + 最高级”的结构表示。这种句式一般常有表示比较范围的介词短语。例如：
Zhang Hua is the tallest of the three.
He works (the) hardest in his class.
最高级的用法
2. 最高级可被序数词以及 much，by far，nearly，almost，by no means，not quite，not really，nothing like 等词语所修饰。例如：
This hat is by far／much／nearly／almost／not nearly／by no means／not quite／nothing like the biggest. How much did the second most expensive hat coat
3. 表示“最高程度”的形容词，如 excellent，extreme，perfect等，没有最高级，也不能用比较级。
4. 形容词最高级修饰作表语或介词宾语的名词、代词时，被修饰的词往往省略。
e.g. He is the tallest (boy) in his class.
5. 作状语的副词最高级前可以不加定冠词。
e.g. Of all the boys he came (the) earliest.
比较级考点
① 比较级修饰问题
a little, a bit, even, still, much, a lot, far 等可修饰比较级。
e.g. Tom is a little taller than Jim.
This book is much more interesting
than that one.
中考链接
② 同级比较
The weather in Beijing is colder
than that in Xi’an.
Our school is bigger than yours.
③ the + 比较级
Lucy is the fatter of the two girls.
④ “a/an + 比较级” 表示“又一，再一”
Lily has a doll, but she wants a bigger one.
⑤ 隐性比较（没有than的情况）
Who runs faster, Lucy or Lily
You’d better come earlier next time.
He worked hard last term, but he
works even harder this term.
⑥ 越来越......
比较级 + and + 比较级
b. the + 比较级 + 句子，the + 比较级 + 句子
It’s getting colder and colder.
The more you exercise, the better you
are.
2. 最高级考点
说明：形容词的最高级前必须加the；副词的最高级前省略the。
① 范围问题
e.g. Tom is the tallest student in the class.
Spring is the best season of the year.
② “......之一”问题
e.g. Beijing is one of the biggest cities in the world.
③ “the + 序数词 + 最高级”
e.g. I think he is the second tallest boy in his class.
3. 比较级和最高级的转换
e.g. Tom is the tallest student in the class.
= Tom is taller than any other student in
the class.
= Tom is taller than all the other students
in the class.
= No other students are taller than Tom.
总结：① any other + 名词单数
the other + 名词复数
② 否定 + 比较级 = 最高级
比较级 + 极限 = 最高级
同级比较
① as + adj./adv. + as
e.g. She is as thin as Lily.
He writes as carefully as Linda.
② not + as/so + adj./adv. + as
e.g. Tony didn’t run so fast as Carter.
教学目标
巩固提升
1. Our family has bought a car so we can travel _____ than before.
most easily B. less easily
C. easily D. more easily
2. My father told me a story last night. It is ____ one I’ve ever heard.
the funniest B. funniest
C. funnier D. the funnier
学以致用
D
A
3. The _____ friends you have, the ____ you will be.
A. more, happy B. many, happy
C. more, happier D. many, happier
4. When he heard a cry for help, he ran out as _______ as he could.
hardly B. quickly
C. finally D. slowly
C
B
5. This place is not big enough for Lucy’s birthday party. We should find a _____ one.
big B. small
C. bigger D. smaller
C
教学目标
讲授新课
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.
longest
longer
high
popular
4a
3. No ocean in the world is as _____ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is _______ smaller.
big
older
much
太平洋
n. 大海；海洋
Write two comparisons about two topics. Write true facts.
Two rivers: _________________ and _________________
__________________________________________________________________________________________________________________________________________________________________________
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.
the Yangtze River
the Amazon River
4b
Two cities: ___________ and ___________
1. _______________________________.
2. _______________________________ .
Two animals: ___________ and ___________
1. _______________________________.
2. _______________________________ .
Write five questions using comparisons. Then ask your partner your questions.
Writing
1. _________________________________
2. _________________________________
3. _________________________________
4. _________________________________
5. _________________________________
What is the highest building in our city
4c
教学目标
巩固提高
Exercises
1. She is ________ than ________.
A. busier / us B. busier / we
C. more busy / us D. more busy / we
2. Jane is ________ than Betty.
A. less taller B. less tallest
C. less tall D. not as tall
3. China is ________ country in the world.
A. the third largest B. the largest third
C. the third large D. a third largest
B
A
A
4. — Which is ____ season in Beijing
— I think it’s autumn.
A. good B. better C. best D. the best
5. — Which is ____, the sun, the moon or the earth
— The moon is.
small B. smaller
C. smallest D. the smallest
D
D
6. I study English as ____ as my brother.
A. hard B. harder C. hardest
7. Which is ____, a bicycle or a computer
A. expensive B. more expensive
C. the most expensive
8. The Yellow River is one of ______ rivers in China.
A. long B. longer C. the longest
A
B
C
3. Lin Tao is __________________________ in the class because he never gets to school on time.
（最懒的学生之一）
4. Edison was_________________________ in the world. (最伟大的发明家之一）
one of the laziest students
one of the greatest inventors
The Yangtze River is__________________ river in the world. (第三长河）
the third longest
2. The Atlantic is _________________ocean in the
world. ( 第二大洋）
the second biggest
翻译句子：
同义句转换
1. Flat A is more expensive than Flat B
Flat B is _____ __________ than Flat A.
Flat B is ________ _______ Flat A.
Flat B is not ____ __________ ___ Flat A.
2. I prefer maths to English.
I like maths __________________ English.
better than
3.He is the tallest student in the class.
He is ______________________________ in the class.
taller than any other student
any other + 名词单数
less
expensive
cheaper
than
as
expensive
as
1.Hainan is a very large Island .It is the second ________
island in china. (large)
2.Our teacher is as ______ as before. (busy).
3.He is ______________ among us. (careful)
4.Li Lei jumped far ______ than Jim. (far)
5.The busier he is, the ________ he feels. (happy)
6.I think Yao Ming is one of ____________ basketball
players in NBA. (hot)
busy
the most careful
farther
happier
largest
the hottest
完成句子
教学目标
课外作业
Practice with your classmates to speak and
write large numbers.
Write some number cars and put them in
your room. Whenever you see, read them
quickly.
Homework
谢 谢！
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Unit 7 What’s the highest mountain in the world 学案
Period 3（Section A Grammar focus-4c）
一、学习目标
1. 能够掌握本课出现的重点短语和句子。
2. 能够正确使用形容词的比较等级。
3. 能够运用形容词的比较等级去描述事物。
二、自主学习
1.背诵并默写Grammar focus 的内容
2.翻译下列句子。
1.世界上最高的山是什么？
_____________________________________________________
2.珠穆朗玛峰有多高？
_____________________________________________________
3.哪一个忽视世界上最深的咸水湖？
_____________________________________________________
4.你知道中国是世界上最古老的国家之一吗？
_____________________________________________________
5.是的，我知道。他比美国要古老得多。
_____________________________________________________
三．合作探究。
1. 将课前准备的情况在小组内交流讨论4b：世界上最大的城市、最大的动物、最长的河流（老师点拨）。
2. 各小组长提问其它小组成员讨论结果，看哪个小组完成得最棒！
3. 4a 小组合作，共同找出方框中合适的单词填空，看那组做的最快最准确。
4. 请按下列句式写出两句话。
Two rivers:_ the Yangziriver_ and the Amazon River21教育网
The yangzi River is amost as long as the Amazon River. The Amazon nRiver is longer than the Yang River. But the Yangzi river is the longest in China.
Two cities__________ and__________________
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.21cnjy.com
Two animals:_________________ and ______________________.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.21·cn·jy·com
四．达标练习
一．单项填空：
( )1. Tian’anmen Square is one of _____square in the world.www.21-cn-jy.com
A. large B. larger C. largest D. the largest
( )2. –-Which country has ___population, China, America or Japan
--China, of course.
A. biggest B. the most C. the biggest D. the smallest
( )3. The Great Wall is more than _______.
A. 6000 kilometers long B. 6ooo kilometer long
C.6000---kilometers-- long D. 6000 kilometer longer
( )4. Shanghai is bigger than ____in China.
A. any other c ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ity B. any other cities 2·1·c·n·j·y
C. other city D. the other city
( )5. She is already _____her brother.
A. so tall th ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )an B. as tall than C. so tall as D. as tall as
( )6. She looks ___than she does.
A. the more older B. very older
C. much older D. more older
( )7. The garden is becoming _______.
A. more beautiful and more B. more beautiful and beautiful
C. more and more beautiful D. more beautiful and beautifuler
二、用形容词和副词的适当形式填空。
1. Tom is ____________ (tall) than any other student in his class. So he is ___________ (tall) in his class.21世纪教育网版权所有
2. Li Ming is one of _____________(clever) boys in our class.【来源：21·世纪·教育·网】
3. The sun is ___________ (bright) than all the other stars because it is ____________ (near) to the earth.21·世纪*教育网
4. The earth receives ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) ____________ (little) heat from the sun in winter than in summer.21世纪教育网21-cn-jy.comwww-2-1-cnjy-com
5.The train is running ___________ and ____________ (fast).2-1-c-n-j-y
作业布置:
五、教学反思:
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Unit 7 What’s the highest mountain in the world 教案
Period 3 Section A (Grammar focus — 4c)
Step 1 Review:
Can you translate the following sentences
长江大约长6,300千米。
The Yangtze River is about 6,300 kilometers long.
黄河长5,464千米。
The Yellow River is 5,464 kilometers long.
明朝的长城大约有8,850千米长。
The Great Wall in Ming dynasty is about 8,850 kilometers long.21教育网
珠穆朗玛峰高8,844.43米，所以攀登起来很危险。
Qomolangma is 8,844.43 meters high and so is very dangerous to climb.21cnjy.com
Step 2 Grammar focus
— 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.21世纪教育网版权所有
— Which is the deepest salt lake in the world
— The Caspian Sea is the deepest of all the salt lakes.21·cn·jy·com
— Did you know that China is one of the oldest countries in the world 21·世纪*教育网
— Yes, I did. It’s much older than the US.
Step 3 Grammar
形容词和副词比较级和最高级变化规则
规则变化
1) 一般情况下，单音节或双音节的形容词（或副词）比较级＋er ， 最高级＋est
如： clever－cleverer－cleverest www-2-1-cnjy-com
few－fewer－fewest
small－smaller－smallest等。
2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如：
nice－nicer－nicest cute－cuter－cutest large－larger－largest
3) 以辅音字母＋y结尾的变y为i＋er或est。如:
easy－easier－easiest
happy－happier－happiest
再如：early, busy, heavy, dirty, lazy也如此。
少数单音节词也是这样，如：
pleased－more pleased－the most pleased 2-1-c-n-j-y
tired－more tired－the most tired
2. 不规则变化：
good —better — best well —better — best 21*cnjy*com
bad－worse － worst
many / much — more — most
far — farther —farthest (距离远)
far — further — furthest (程度深)
old — elder — eldest (长幼)
old — older —oldest (年龄)
Step 4 中考链接
比较级考点
① 比较级修饰问题
a little, a bit, even, still, much, a lot, far 等可修饰比较级。【来源：21cnj*y.co*m】
e.g. Tom is a little taller than Jim.
This book is much more interesting than that one.【出处：21教育名师】
② 同级比较
e.g. The weather in Beijing is colder than that in Xi’an.
Our school is bigger than yours.21教育名师原创作品
③ the + 比较级
e.g. Lucy is the fatter of the two girls.
④ “a/an + 比较级” 表示“又一，再一”
e.g. Lily has a doll, but she wants a bigger one.
⑤ 隐性比较（没有than的情况）
e.g. Who runs faster, Lucy or Lily
You’d better come earlier next time.
He worked hard last term, but he works even harder this term.www.21-cn-jy.com
⑥ 越来越......
比较级 + and + 比较级
b. the + 比较级 + 句子，the + 比较级 + 句子
e.g. It’s getting colder and colder.
The more you exercise, the better you are. 21*cnjy*com
2. 最高级考点
说明：形容词的最高级前必须加the; 副词的最高级前省略the。
① 范围问题
e.g. Tom is the tallest student in the class.
Spring is the best season of the year.【版权所有：21教育】
② “......之一”问题
e.g. Beijing is one of the biggest cities in the world.【来源：21·世纪·教育·网】
③ “the + 序数词 + 最高级”
e.g. I think he is the second tallest boy in his class.
3. 比较级和最高级的转换
e.g. Tom is the tallest student in the class.
= Tom is taller than any other student in the class.
= Tom is taller than all the other students in the class.
= No other students are taller than Tom.2·1·c·n·j·y
2. 同级比较
① as + adj./adv. + as
e.g. She is as thin as Lily.
He writes as carefully as Linda.
② not + as/so + adj./adv. + as
e.g. Tony didn't run so fast as Carter
Step 5 Writing
Write five questions using comparisons. Then ask your partner your questions
Step 6 Work on 4a /4b
1.Get the students to fill in the blandks with the correct forms of the words in the box.
2. Get the students to write two comparisons about two topics.
Step 7 Work on 4c
Get the students to write five questions using comparisons.
Then ask his/her partner your questions.
Step 8 Exercises:
Step 9 Homework
1. Practice with your classmates to speak and write large numbers.
2. Write some number cars and put them in your room. Whenever you see, read them quickly.
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