Unit 7 Section A Grammar Focus-4c 课件（新目标八下Unit 7 What's the highest mountain in the world?）

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人教新目标Go For It八年级英语下册
Unit7 what's the highest mountain in the word SectionA Grammar Focus-4c
1.复习本单元目标句型, 熟练掌握形容词和副词比较级和最高级的运用。
2.能正确运用形容词副词的比较级和最高级进行事物间的比较，能用大数描述和谈论自然地理概述, 培养总结归纳的能力。
3.能正确运用形容词副词的比较级和最高级进行事物间的比较，能用大数描述和谈论自然地理概述, 培养总结归纳的能力。
Learning
goals
4.通过语法结构的学习,思考如何运用语法结构帮助我们提高英语的听、说、读、写的能力。
除了以上的表示方法，有时也可用“基数词 + 单位词 + in + 长宽高深度等的名词”来表示。
… in length 长度
… in width 宽度
… in height 高度
… in depth 深度
若表示重量，可以用 … in weight
The secret of success is constancy of purpose
长度、宽度、高度、深度的表示法
老虎路有200米长，而且湿度很重。
Tiger Path is 200 meters long and has a high humidity.
这座山大概两千米高。
The mountain is about two thousand meters high.
那面镜子有两米长。
The mirror is two meters long.
*长度、宽度、高度、深度的表示法，有一个专门的结构：
“基数词 + 单位词 + 形容词”
The secret of success is constancy of purpose
比较级的用法
1. 主语+谓语+比较级+than+比较对象 “…比…如何”
汤姆比他弟弟聪明。
他跑得比汤姆快。
Tom is cleverer than his brother.
He runs faster than Tom.
2. 主语+谓语+the+比较级+of the two “主语是两者中较…的一个”
杰克是兄弟二人中较瘦的一个。
Jack is the thinner of the two brothers.
3. the+比较级… ，the+比较级… “越…，就越…”
孩子们越早学会独立，对他们的未来就越好。
你学习越努力，你越能取得好成绩。
The earlier kids learn to be independent, the better it is for their future.
The harder you study, the better grades you will get.
Grammar Focus
The secret of success is constancy of purpose
Qomolangma is higher than any other mountain in the world.
=Qomolangma is higher than all the other mountains in the world.
=Qomolangma is the highest mountain in the world.
用比较级表达最高级
主+谓+形容词或副词比较级+than+any other+名词单数
主+谓+形容词或副词比较级+than+(all)the other+名词复数
The secret of success is constancy of purpose
Although Japan is _______ than Canada, it is ________ smaller.
big much popular long old high
older
much
The secret of success is constancy of purpose
Make comparisons according to the table.
the Nile River the Amazon River the Yangtze River the Yellow River
6,671 km 6,480 km 6,300 km 5,464 km
The Nile River is the longest river in the world.
The Amazon River is one of the longest rivers in the world.
The Amazon River is a little longer than the Yangtze River.
The Nile River is much longer than the Yellow River.
The secret of success is constancy of purpose
Review
How much do you know about the scenery
Qomolangma
No mountain in the world is ____________ Qomolangma.
It is 8848.86 meters _____.
lt is ____________ mountain in the world.
It is ______ than any other mountain in the world.
high
higher
the highest
as high as
the Sahara
No desert in the world is ____________ the Sahara.
It is 9600000 square kilometers ___________.
lt is _____________ desert in the world.
It is ______ than any other desert in the world.
in size
larger
the largest
as large as
How much do you know about the scenery
Review
The secret of success is constancy of purpose
Now try to translate the sentences below:
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。
那条河长约两千米。
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.
The secret of success is constancy of purpose
这个箱子重9公斤。
The box is 9 kilos.
= The box is 9 kilos in weight.
那座桥有三米高。
The bridge is 3 meters in height.
教室有25英尺长，20英尺宽。
Practise
The classroom was 25 feet in length and 20 feet in width.
The secret of success is constancy of purpose
the Nile
No river in the world is _____________ the Nile.
It is 6,671 kilometers ______.
lt is ____________ river in the world.
It is ______ than any other river in the world.
long
longer
the longest
as long as
How much do you know about the scenery
Review
The secret of success is constancy of purpose
the Caspian Sea
No salt lake in the world is _____________ the Caspian Sea.
It is 1025 meters _____.
lt is ______________ salt lake in the world.
It is ________ than any other salt lake in the world.
deep
deeper
the deepest
as deep as
How much do you know about the scenery
Review
The secret of success is constancy of purpose
形容词和副词的比较级和最高级
大多数形容词和副词都有三个级
原级: 常用结构as...as... “和..….一样”
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：比较级＋than ...
He is taller than I. 他比我高。
Grammar
The secret of success is constancy of purpose
3) 最高级(用于三者或三者以上的比较)，
常用结构:
the + 最高级＋of / in ...
He is the tallest of the three.
他是这三个人中最高的。
He is the funniest in his class.
他是他们班最有趣的。
The secret of success is constancy of purpose
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。
Let’s learn
The secret of success is constancy of purpose
Let’s learn
Read the following sentences and find the comparatives and superlatives.
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.
此句型用比较级表达最高级含义
The secret of success is constancy of purpose
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
The secret of success is constancy of purpose
形容词和副词的原级,比较级,最高级
大多数形容词和副词有三个等级：_____________________。比较级表示_________，用于__________的比较，说明“前者比后者更……”。形容词、副词的最高级用于_____________的人或事物之间的比较，常用_________来说明比较的范围。形容词最高级前要加_________，副词最高级前的the_______。
原级、比较级和最高级
“更……”
两者之间
三个或三个以上
of/in短语
定冠词the
可省略
Let’s learn
The secret of success is constancy of purpose
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.
4a
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n. 大海，海洋
注意看原级、比较级、最高级的标志词
The secret of success is constancy of purpose
最高级的用法
形容词和副词的最高级常用于______或_________的人或事(物)之间的比较。在句中使用时,形容词最高级前通常用_____.句中常含有表示比较范围的介词_____或_____。常用的句型结构为:
三者以上
三者
the
in
of
1. 主语+谓语+(the)+最高级+in\of … “…中最…”
这是所有故事中最令人惊讶的。
This is the most amazing story of all.
2. 主语+谓语+ one of the +最高级+in\of … “…中最…之一”
它是我们镇上最宽的公路之一。
It is one of the widest roads in our town.
3. 主语+谓语+the +序数词+最高级+名词+in\of … “…中第…的”
李明是我们班第二高的男孩。
Li Ming is the second tallest boy in our class.
4. 疑问词+谓语+the +最高级，A，B or C “ 在ABC中，谁最…？”
月亮，地球和太阳哪个最大？
Which is the biggest, the moon, the earth or the sun？
Grammar Focus
【注意】形容词最高级前要加the，副词最高级前的the可省略；
最高级前有物主代词、指示代词、名词所有格时，不加the
The Yangtze River is China’s longest river. 长江是中国最长的河流。
The secret of success is constancy of purpose
Two cities: ________________ and _______________
1. ___________________________________________
2. ___________________________________________
___________________________________________
Two animals: ________________ and _______________
1. ____________________________________________
2. ____________________________________________
____________________________________________
Singapore
Kuala Lumpur
Kuala Lumpur is as modern as Singapore.
Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur.
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.
The secret of success is constancy of purpose
4b
Write two comparisons about two topics. Write true facts.
e.g. Two rivers: the Yangtze River and the Amazon River
The Yangtze River is almost as long as the Amazon River.
The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.
The secret of success is constancy of purpose
Presentation
Write two comparisons about two topics. Write true facts.
4c
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
Presentation
Write two comparisons about two topics. Write true facts.
e.g. Two rivers: the Yangtze River and the Amazon River
The Yangtze River is almost as long as the Amazon River.
The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.
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
Which is the biggest park in our city
Which is the longest road in our city
Production
The secret of success is constancy of purpose
Exercises
一、用括号内所给单词的适当形式填空。1. The road is as (wide) as that one.
2. The weather is getting (cold) and (cold).3. The Pacific Ocean is the (deep) ocean in the world.
4. Ben is (much) taller than his brother.
5. Which is the (high) mountain in the world
wide
colder
colder
deepest
much
highest
The secret of success is constancy of purpose
二、根据汉语意思完成句子,每空一词。1. 登陆火星比我们想象中要难得多，但我们做到了。Landing on Mars was　 　 　 　 　　　　　than we imagined, but we made it.
2. 袁隆平是最伟大的科学家之一，他对世界做出了重要的贡献。Yuan Longping, one of 　　 　　　　 　　　　　, made important contributions to the world.
3. 我认为四月是泰国最热的月份。I believe that April is 　　 　　　　 　　　　in Thailand.
much more difficult
the　greatest　scientists
the　hottest　 month
The secret of success is constancy of purpose
4. 汤姆是我们班年龄第二大的学生。Tom is　　 　　　　 　　　　student in our class.
5. 这栋房子的起居室比其他任何房间都大。The living room is bigger　　　 　　　 　　　
room in this house.
the　second　 oldest
than　any　 other