Unit 7 第三课时 Section A (Grammar focus-4c)课件【大单元教学】人教版八年级英语下册

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COMPANY SLOGAN
人教版 英语（八年级下）
Section A（Grammar focus-4c）
Unit 6
An old man tried to move the mountains.
Lead-in
2
Practice
3
Content
Summary
5
Exercises
6
Consolidation
4
1
Learning objectives
文化意识
语言能力
思维品质
学习能力
1
Learning objectives
1.对询问高度、长度、宽度、深度的疑问句进行归纳总结，掌握
其规则；2.通过不同方式的练习，熟练掌握本单元的比较级以及最高级的语法知识。
掌握并能灵活运用本单元的重点词汇以及相关短语，能从更多典型的句子中掌握形容词、副词比较级、最高级更丰富的用法。
鼓励学生仔细观察并善于发现总结规律。
培养学生热爱大自然的思想。
Which mountain is the highest in the world
Qomolangma.
how high is it
It’s about 8,800 meters high.
Lead-in
2
Who can answer most quickly and correctly
the Sahara
It’s about 9,600,000 square kilometers in size.
Which desert is the largest in the world
how large is it
Who can answer most quickly and correctly
The Yangtze River
It is about 6,300 kilometers long.
What is the second longest river in the world
How long is it？
Who can answer most quickly and correctly
What is the longest wall in the world
The Great Wall.
How long is it？
It’s about 8,850 kilometers long. It’s the longest wall in the world.
Who can answer most quickly and correctly
Which country has the largest population in the world
India (has the largest population in the world).
What’s the population
It has about 1,417,000,000 people in India.
Who can answer most quickly and correctly
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
① 问深度：How deep is/are ...
How deep is the West Lake
② 问长度：How long is/are/ ...
How long is the river
③ 问高度：How high is/are ...
How high is the door
④ 问宽度: How wide is/are ...
How wide is our classroom
如何对物体的长度、高度、宽度和深度提问？
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”
2. 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
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.
形容词和副词的比较级和最高级
英语中的副词和形容词有三个等级：原级，比较级和最高级
1. …as +原级 +as … “和…一样”
你和我一样高。
Lily和Lucy 跑的一样快。
You are as tall as me.
Lily runs as fast as Lucy.
2. 否定形式…not so\as +原级 +as … “前者不如后者”
你不如我高。
Lily跑得不如Lucy快。
You are not so\as tall as me.
Lily doesn’t run so\as fast as Lucy.
3. 倍数+as+原级 +as … “… 是…的几倍；表倍数关系”
You house is three times as large as mine.
This sofa is twice as big as that one.
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…”
你学习越努力，你越能取得好成绩。
The harder you study, the better grades you will get.
比较级的用法
4. 比较级+and+比较级… “越来越…”
越来越好， 越来越高
越来越美丽， 越来越外向
better and better, taller and taller.
more and more beautiful\outgoing
我们的国家正变得越来越强大。
雪正下得越来越大。
Our country is becoming stronger and stronger.
It is snowing more and more heavily
5. 比较级前可用even, far, much, a little, bit等修饰，表示程度。
你对此事的了解甚至还不如我。
大象比熊猫重得多。
You know ______less about it than I do.
The elephant weighs ______ more than the panda.
even
much
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？
最高级的用法
用法：比较级形式表最高级含义。（比较双方属于同一范围内）
a. 比较级＋than＋any other＋单数名词+范围
He is taller than any other boy in his class.
b. 比较级 ＋ than＋the other＋复数名词+范围
比较级 ＋ than＋the rest of ＋ 复数名词+范围
比较级 ＋ than＋any of the other+复数名词+范围
She goes to school earlier than the other girls in her class.
China is larger than any of the other countries in Asia.
c. 比较级 + than + anything/anyone else
George did more work than anyone else.
Tom cared more for money than for anything else 汤姆最喜欢钱。
Fill in the blanks with the correct forms of the words in the box.
4a
big much popular long old high
The Amazon River is one of the _______ rivers in the world. It’s a little ______ than the Yangtze River.
Qomolangma is 8,848.43 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
big
older
much
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.
4b
Two cities: ________________ and _______________
1. ___________________________________________
2. ___________________________________________
___________________________________________
Two animals: ________________ and _______________
1. ____________________________________________
2. ____________________________________________
____________________________________________
Singapore
Kuala Lumpur(吉隆坡)
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.
1.能记住并正确运用本课时的重点单词、短语和句子。
2.归纳并掌握形容词的原级、比较级和最高级的构成和用法;能使用形容词的原级、比较级和最高级对事物进行描述。
3.通过讨论家乡之最,提升学生对家乡的热爱。
Summary
5
1. My brother has ____ books than I.
A. much B. more C. many D. most
2. The more you smile, the _____ you will feel.
A. happy B. happier C. happily D. more happily
3. I know you are shorter than your brothers，but you run _________.
A. more faster B. fastest C. more fast D. fast
4. Mr Smith thought the Century Park was the second _____ in Shanghai.
A. large B. larger C. largest D. very large
5. I think English is as ____ as maths.
A. important B. more important C. most important D. importanter
一、单项选择
B
B
B
C
A
Exercises
6
1. China is _______ (large) than any other country in Asia.
2. Our city is becoming more and more _________ (beautiful).
3. The _____ (much) we do for the old people, the _______ (happy) we’ll be.
4. My brother is the ______ (tall) of the two boys in the picture.
5. Her bedroom is twice _________ (big) than mine.
6. Mrs. Smith looks much __________ (young) with her new hairstyle.
7. China is one of __________________(ancient) countries in the world.
8. The Yellow River is the second ________ (long) river in China.
二、用括号中所给单词的适当形式填空
taller
larger
beautiful
more
happier
longest
bigger
younger
the most ancient
二、根据汉语意思完成句子,每空一词。
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
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
好好学习，天天向上！
Good, good study，day, day up!