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(共34张PPT)
2. Whose birthday is it
Unit 4
The Wonders of Nature
人教版 英语（八年级下册）
Section A
Grammar Focus
2. Whose birthday is it
通过听读例句、分析结构等方式，获取并正确认读形容词和副词比较级、最高级的构成规则（规则变化、不规则变化）及核心用法相关词汇与句式（如bigger, the biggest, more amazing等），感知比较级与最高级的语法特征；（学习理解）
01
通过完成句式填空、改写句子、编写比较类问题等练习，获取比较级与最高级在描述事物特征、动作程度时的关键用法，归纳并内化“比较级+than”“one of the+最高级+可数名词复数”等常用表达；（应用实践）
02
通过讨论、问答互动等活动，理解比较级与最高级在实际交际中描述事物差异、进行对比的意义，能够主动运用该语法结构描述身边的人或事物，并认同准确运用比较句式能让表达更丰富的语言理念。 （迁移创新）
03
学习目标
4a
Grammar
(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
(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
thousand
million
9，365,278,689
billion
4a
Grammar
如何询问和表达物体的长度、宽度、高度、深度等。
句型： How + long (wide, high, deep, big, heavy…)+谓语+主语+其他？
How wide is the mirror 那面镜子有多宽？
如何表达物体的长度、宽度、高度、深度等呢？
观察并总结:
It's 8,844.43 meters high.
______+______+___________(long, high, wide, deep…)构成的;
基数词
度量词
长\高\宽\深
主+be+
物体的长、宽、高、深的表达法： 基数词+度量词（meters，kilometers, square kilometers）+形容词（long, wide, high, deep等）。
当基数词大于1时，度量词用复数形式。
e.g. The basketball player is 2 meters tall.
The river is about 2 meters wide/deep.
The mountain is about 2 thousand meters high.
“基数词 + 度量词 + 形容词”
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
1．The Yangtze River is about 6,397 kilometres ________.
A．tall B．high C．long D．wide
2．The new bridge in our village is _________.
A．666 meter high B．666 high meters
C．666 long meters D．666 meters long
3．—What’s the ________ of the building
—It’s 236 metres ________.
A．high; high B．height; height C．high; height D．height; high
4．这张桌子有5米长。
The desk is .
5．这块岩石长5米，宽2米。
The rock is and 2 meters wide.
巩固练习
√
√
√
five meters long
5 meters long
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.
4a
Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions..
Grammar
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...”
the Yangtze River
长江
6300 km
the Amazon River
亚马逊河
6440 km
the Nile
尼罗河
6670 km
long
longer
longest
The Amazon River is longer than the Yangtze River.
The Nile is longer than the Amazon River.
The Nile is the longest of all.
概念理解
比较级：_____者比较。
最高级：_____者或_____者以上比较。
两
三
三
Presentation
1.比较级和最高级的基本概念
概念：用来修饰名词的形容词或者修饰动词的副词，会因为修饰程度不同而有所“比较”，可分为原级，比较级（更......）与最高级（最......）。
Presentation
2.比较级和最高级的构成
long
longer
longest
1. 一般在词尾加-er，-est。
2. 以不发音的e结尾加-r，-st。
3. 以重读闭音节结尾，
双写尾字母，再加-er，-est。
4. 以辅音字母加y结尾的，
变y为i再加-er，-est。
5.多音节和部分双音节词，
词前加 more， most。
nice
nicer
nicest
big
bigger
biggest
heavy
heavier
heaviest
famous
more famous
most famous
river
scenery
lake
snow
mountain
规则变化
Presentation
2.比较级和最高级的构成
不规则变化
原级 比较级 最高级
good\well better best
bad\badly worse worst
many\much more most
little less least
old older\elder oldest\oldest
far farther(更远) further(进一步的) farthest\furthest
Practice
1.big __________ _________ 2. high __________ __________
3. low __________ __________ 4. deep __________ __________
5. easy __________ __________ 6. far __________ __________
7. happy __________ _______ 8. loud __________ __________
9. great __________ __________ 10. close __________ __________
11. amazing_______________ ________________
12. interesting______________ ________________
13. well __________ __________ 14. little __________ __________
写出下列单词的比较级和最高级
bigger
biggest
higher
highest
lower
lowest
deeper
deepest
easier
easiest
farther
farthest
happier
happiest
louder
loudest
greater
greatest
closer
closest
more amazing
most amazing
more interesting
most interesting
better
best
less
least
Presentation
3.比较级的用法
形容词或副词的比较级+than
The Changjiang River is longer than it.长江比它长。
Bill runs faster than any other boy in his class.比尔跑得比班上其他任何男孩都快。
“比较级+and+比较级(单音节词和部分双音节词)”或“more and more+原级(多音节词和部分双音节词)”表示“越来越……”。
Summer is coming. It's getting hotter and hotter.夏天就要来了。天越来越热了。
“the +比较级...，the+比较级..”表示“越……,就越……”。
The more you read, the more you know.你阅读得越多,知道的就越多。
Presentation
3.比较级的用法
the + 比较级 + of the two (+ 名词复数) 表示“两者中较……的那个”。
Mike is the taller of the two boys. 迈克是两个男孩中较高的那个。
Which/Who... + 比较级, A or B 表示“ A和B哪个/谁更……？”
Which city is larger, Beijing or Shanghai 北京和上海，哪个城市更大？
A + be + 倍数 + 形容词比较级 + than + B 表示“A是B的……倍……”。
Our school is three times bigger than yours. 我们学校是你们学校的三倍大。
常用于修饰比较级的单词或短语：a little、a lot、a bit、much、even、far等
1．Our country is getting ________ . Many foreigners would like to visit it.
A．more beautiful and more beautiful B．more beautiful and beautiful
C．more and more beautiful D．beautiful and beautiful
2．—The doctor tells me not to eat too much junk food, but I find it hard.
—The doctor is right.________ junk food you eat, ________ you will be.
A．The more; the healthier B．The most; the healthiest
C．The less; the healthier D．The least; the healthiest
3．—Which is ________ of the twins, Lucy or Lily
—It’s hard to say. Both of them are good at their lessons.
A．the cleverer B．cleverer C．cleverest D．the cleverest
4．—What do you think of the novel The Three-body Problem
—I’ve never read ________ one before. It is full of imagination（想象力）.
A．the best B．the worst C．a worse D．a better
5．This book is ________ interesting, but that one is ________ more interesting.
A．far; very B．far; much C．pretty; very D．pretty; much
√
√
√
√
√
Presentation
4.最高级的用法
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？
巩固练习
1．Qomolangma is the _________ mountain in the world.
A．high B．higher C．more higher D．highest
2．London is one of the ________ famous ________ in the world.A．/; city B．most; cities C．more; cities D．most; city
√
√
3．—Hainan is a very large island.
—Yes, it’s the second ________ island in China.
A．large B．larger C．largest D．the larger
4．Which city has ________ population, Beijing, Wuhan or Shanghai
A．larger B．the largest C．more D．the most
5．Of all the performers, I think he is the ________ one.
A．success B．most successfulC．more successful D．successful
6．—Who runs _________ Jim, Tom or Sam —Tom does, of course.
A．fast B．faster C．most fast D．fastest
7．—Tom, I hear that Bob runs ________ in your class. Is that true
—No. In fact, he doesn’t run as ________ as John.
A．fastest; faster B．fastest; fast C．faster; fastest D．faster; fast
√
√
√
√
√
（2）“比较级+than any other+名词单数形式”或“比较级+than the other+可数名词复数形式”可与“（the+）最高级+of/among/in...转换”。
The movie is the most interesting of all.
这部电影是所有电影中最有趣的。
=The movie is more interesting than _____ ______ movie.
=The movie is more interesting than ____ ______ movies.
any other
the other
原级、比较级与最高级之间的转换
（1）as...as结构和最高级的转换
No ocean in the world is as big as the Pacific Ocean. 太平洋是世界上最大的海洋。
=The Pacific Ocean is ____ ________ ocean in the world.
the biggest
1．He is not as tall as Mike.(改为同义句)
Mike is him.
2．This is the highest mountain in the country. (改为同义句)
No mountain is this one in the country. 3．This river is longer than the other rivers in the country.（改为同义句）
This river is in the country.
4．Nobody else is cleverer than Daniel in his class. (同义句改写)
Daniel is student in his class.
5．It is the most beautiful city in China.（改为同义句）
It is than in China.
巩固练习
taller than
as high as
the longest
the cleverest
more beautiful any other city
5.原级的用法
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.
常用于修饰原级的单词或短语：very、too、quite、so等
Presentation
1．This room is as ________ as that one.
A．bigger B．longer C．clearly D．clean
2．Daniel is ________ his brother. They are both 1.76 meters tall.
A．taller than B．as tall as C．so tall as
3．—This film is ________ that one.
—I agree, so I like both of them.
A．as interesting as B．not as interesting as
C．more interesting than D．less interesting than
4．—Our classroom is ______ clean ______ yesterday.
—Sorry, I’ll clean it right away.
A．as; as B．so; as C．not so; as
巩固练习
√
√
√
√
1.Mount Kilimanjaro is __________ (five thousand, eight hundred and ninety-five) metres high.
2._________ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second.
3.The East African Rift Valley is about 4,000 (_____________) miles long.
4.The Taklimakan Desert has a total area of about 337,000 (____________________________________) square kilometres.
Write or spell out the numbers.
4b
5,895
乞力马扎罗山
25,768
/ kju b k/ adj. 立方的
/ma l/ n. 英里
因加瀑布
东非大裂谷
塔克拉玛干沙漠
three hundred and thirty-seven thousand
four thousand
4c
Complete the passage with the correct forms of the words in the box.
large 　amazing　 far　 close 　loud
My friends and I visited Victoria Falls in Africa
last year. Visiting one of the world’s ________
waterfalls was a magical experience. As we went
________ to the falls, the noise of the water
slowly grew ________ and louder. Then, right before our eyes, the waterfall appeared. It went on for as ________ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest but also the __________ experience of our trip!
largest
closer
louder
far
most amazing
n.池塘
......远至（某处）
4d
Write some questions to compare places. Then ask a partner your questions.
What is the highest ...
Which park is bigger, ... or ...
Is ... longer than ...
You can ask for help:
形容词和副词的比较级与最高级
较大数字的表达
规则变化、不规则变化
比较级和最高级的构成
Summary
比较级的用法
最高级的用法
1. 比较级+than
2. the + 比较级, the + 比较级
3. 比较级 + and + 比较级
more and more + 形容词/副词原级
1. (the +) 最高级 + in/of/among短语
2. one of the + 形容词最高级 + 可数名词复数 + in/of短语
3. “Which/Who...(+the)+最高级, A, B or C ”
4. the + 序数词 + 形容词最高级 + 可数名词单数 + in/of短语
thousand
million
9，365,278,689
billion
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
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
三、用所给词的适当形式填空。
1.(2025·扬州中考) The international influence of Yangzhou is getting ________ than before. (strong)
2.(2025·德阳中考改编) Lin Tao runs ________(fast) than his classmates. He is the running star in his class.
3.(2025·达州中考) The Yangtze River is the ________(long) river in China.
4.(2025·白银中考) The more we communicate with our parents, the _______
(good) we'll understand each other.
5.(2025·成都中考改编) Miss Li always has a lot of work to do. For her, nothing is _______________(important) than a proper plan.
6.(宁波中考改编) For most of the students, June is always the ________(busy) month in a year.
7.Qian Xuesen, father of China's space program, is one of the ________(great) scientists in the world.
stronger
faster
longest
better
more important
busiest
greatest
四、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.
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.
much more difficult
the　greatest　scientists
the　hottest　 month
than　any　 other
the　second　 oldest
Homework
总结梳理形容词和副词的比较级和最高级的语法知识并绘制思维导图。
制作一张“世界之最”英文小卡片，选一处自然景观，用数据、比较级、最高级等描述其特征。
上网查询更多关于自然奇观的介绍，用数据、比较级、最高级等描述比较2~3处自然景观，并制作成图文并茂的成果。
基础作业
拓展作业
实践作业
2. Whose birthday is it
Thanks
for watching!

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