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(共29张PPT)
Unit 4
Amazing Plants and Animals
人教版2024版八年级上册
Section A (Grammar Focus) 语法课
Learning Objectives
1.学生能够通过观察和分析 3a 中含形容词、副词最高级的例句，深入理解最高级的构成形式及定冠词 “the” 的搭配规则，明确最高级在描述 “最……” 特征时的语义功能。
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2. 学生能够掌握并准确运用形容词、副词最高级及相关句式完成 3b 填空练习，在具体语境中根据单词音节数灵活选择 “- est” 或 “most” 的构成形式，提升最高级运用的准确性和熟练度。
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3. 学生能够熟练运用最高级及相关结构完成 3c 语篇填空，通过分析银杏的特征（如年代、外观、常见度等），将信息转化为连贯的最高级表达，在小组中交流对银杏的认知，展示对最高级语法的实际运用能力。
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按要求写出正确的单词、词组或句子。
竹子 (名词) __________ 2. 流行的 (形容词) ___________
3. 美德(名词) __________ 4. 工具(名词) __________
5. 折叠扇(短语) __________ 6. 实际上 (副词) __________
7. 幼芽（名词）__________ 8. 出现（动词）________
9. 请随意问我任何问题。 ___________________________
10. 事实上我们吃竹笋。 _______________________
11. 人们使用竹子去制作工具。___________________
12. 竹子在中国油画中时最流行的主题之一。
________________________________________
bamboo
popular
goodness
tool
folding fan
actually
shoot
appear
Please feel free to ask me any questions.
Bamboo is one of the most popular subjects in Chinese paintings.
People use bamboo to make tools.
Actually we eat bamboo shoots.
回顾复习 Section A Pronunciation——(2a—2e)
Let’s enjoy videos.
Warming up
Can you express these world's records in one sentence
●Mount Everest is the highest mountain on Earth, standing at an elevation of 8848.86 meters.
●The Nile River is the longest river in the world, meandering across the deserts of North Africa for 6650 kilometers.
●The Sahara Desert is the largest hot desert in the world, covering an area of nearly 9 million square kilometers.
●Blue whales are the largest animals on Earth, reaching lengths of over 30 meters and weighing up to 180 tons, gracefully moving through the deep sea.
●The Mariana Trench is the deepest place in the world's oceans, plunging to a depth of 10994 meters and challenging humanity's exploration of extreme environments.
●The Great Wall is the longest man-made structure in the world, spanning
21196 kilometers and bearing thousands of years of history and culture.
Grammar Focus
Read the sentences and notice the words in bold. What are
the ways to form a superlative adjective or adverb
The blue whale is the largest and heaviest animal in the world.
The biggest land animal in the world is the African elephant.
The cheetah runs the fastest among all land animals.
I think the most useful plant in the world is bamboo.
It is perhaps the most interesting plant in the world.
large — largest heavy — heaviest big — biggest fast — fastest
useful — the most useful interesting — the most interesting
Observe the words and find the rules.
3a
形容词、副词的最高级用于三个或三个以上的人或事物之间的比较，常用of/in短语来说明比较的范围。
形容词最高级前要加定冠词the，
副词最高级前的the可省略。
定义
特点
形容词、副词的最高级
It is the most popular cinema in the city.
He is the tallest of the three.
He runs (the) fastest.
The moss is the oldest plant in the world.
Qomolangma is the highest mountain in the world.
The cheetah is the fastest animal in the world.
He Pingping is the shortest man in the world.
Zhan Shichai is the tallest man in China.
最高级前要加the.
一、一般在形容词或
副词后＋est.
最高级变化规则
He is the nicest person I’ve ever met.
He lives the closest to the school.
This river is the widest in this area.
Tom always is late for school, he is the latest.
The blue whale is the largest animal in the world.
最高级前要加the.
二、以e结尾的形容词和副词一般＋-st.
最高级变化规则
He has the reddest hair I’ve ever seen.
She is the thinnest girl in the group.
August is usually the hottest month in this city.
Tom is the fattest boy in the class.
The African elephant is the biggest land animal in the world.
最高级前要加the.
三、以重读闭音节词尾只有一个辅音字母时，最高级应双写辅音字母，再＋-st.
最高级变化规则
He came the earliest of all students.
She is the happiest girl in the world.
This is the busiest time of the year for me.
This question is the easiest on the test.
The blue whale is the heaviest animal in the world.
最高级前要加the.
四、以辅音字母+y结尾的双音节词，变最高级应变y为i再加-est.
最高级变化规则
Sports meeting is the most interesting activity in our school.
Who is the most handsome boy in our class.
The bamboo is the most popular subject in Chinese paintings.
The blue whale is the most beautiful animal in the world.
最高级前要加the.
五、多音节词和部分双音节词，词前加most变最高级.
最高级变化规则
原级 比较级 最高级
good / well better best
bad / badly worse worst
many / much more most
little less least
far farther farthest
further furthest
形容词和副词的比较级和最高级的构成（不规则变化）
最高级不规则变化
最高级不规则变化
最高级
的变化规则
tall--talleat、short--shortest、
fast--fastest 、high--highest
large--largest、late--latest
wide--widest、nice--nicest
big--biggest、fat--fattest
thin--thinnest、red--reddest
一、一般在形容词或副词后＋est.
三、以重读闭音节词尾只有一个辅音字母时，最高级应双写辅音字母，再＋-st.
二、以e结尾的形容词和副词一般＋-st.
四、以辅音字母+y结尾的双音节词，变最高级应变y为i再加-est.
六、不规则变化.
五、多音节词和部分双音节词，词前加most变最高级.
easy--easiest、heavy--heaviest
early--earliest
beautiful--most beautiful
popular--most popular
good/wee--best
many/much--most
最高级的常用句型（一）
◆ “主语+ be+ the+形容词最高级+in/of 短语”意为
“……是……中最……的”。
◆ “主语+实义动词（+the）+副词最高级+in/of 短语”意为
“……是……中最……的”。
◆ “主语+be+ one of the+形容词最高级+可数名词复数+in/of 短语”意为“……是……中最……的……之一”。
My mother is the busiest one in my family.
The Yangtze River is the longest river in China.
Tom works (the) hardest in Class 3.
Tianjin is one of the biggest cities in China.
最高级的常用句型（二）
◆ “疑问词+ be+ the+形容词最高级，甲、乙or丙？”用于三个或三个以上的人或事物之间的比较。
◆ “疑问词+助动词+主语+动词原形（+the)+副词最高级，甲、乙or丙？”
◆ “主语+be + the+序数词+形容词最高级+可数名词单数+in/of短语”意为“……在…… 中是第几……的……”。
Who is the tallest, Tom, Kate or Bill
Which city do you like best, Beijing, Shanghai or Guangzhou
The Yellow River is the second longest river in China.
1. Among all animals, I love pandas the best. I think they are _________ (cute) animals in the world.
2. Which do you think is __________________ (beautiful), the rose, the peony, or the lotus flower
3. Look at that butterfly! It has __________________(colourful) wings.
4. Which animal jumps ___________ (high), the lion, the monkey, or the tree frog
5. The elephant birds were ___________ (large) and _________ (heavy) birds ever on earth. Some could stand up to three metres tall and weigh up to 860 kg.
the cutest
the most beautiful
the most colourful
(the) highest
the largest
heaviest
Complete the sentences with the superlative forms of the words in brackets.
3b
1.What is this
—It's ...
2.What do you know about it
3.What do you think of it
—It's ...
4. Do you want to know more about it
...
The ginkgo tree
Complete the passage with the superlative forms of the words in the box.
3c
ancient beautiful common good popular
The ginkgo tree is one of ____________________ living trees on earth. Ginkgo trees first appeared over 200 million years ago. Chinese people love the ginkgo, as it is a symbol of hope and long life. Many Chinese believe that the old ginkgo tree in the Zhongnan Mountains in Shaanxi Province is ___________________. Thousands of tourists come to see it each year, especially in mid-October, as it is _________ time to see it. The ginkgo tree is one of ____________________ trees in streets, parks, and gardens across China. When autumn comes, one of _________________ activities is to take a walk under ginkgo trees. People believe the bright yellow leaves can bring joy to their heart.
the most ancient
the most beautiful
the best
the most common
the most popular
Language points
1. The biggest land animal in the world is the African elephant.
世界上最大的陆地动物是非洲象。
land
n. 陆地；土地
v. 降落；着陆
take off 起飞
on land 在陆地上
by land 经陆路
A piece of land in the middle of the sea is island.海中央的一块陆地是岛屿。
Did you go there by land or by sea 您是通过陆路还是海路去的？
The plane landed before the storm came.飞机在暴风雨来临之前降落了。
A butterfly landed on her shoulder.一只蝴蝶落在了她的肩膀上。
African
n. 非洲人 （可数名词）
复数：Africans
adj. 非洲的;非洲人的
① There are five Africans in our school. 我们学校有五个非洲人。
②African drumming plays a key role in traditional ceremonies.
非洲鼓乐在传统仪式中发挥着关键作用。
Asia 亚洲 Asian 亚洲的；亚洲人
Africa 非洲 African 非洲的；非洲人
Europe 欧洲 European 欧洲的；欧洲人
Language points
2. Some could stand up to three metres tall and weigh up to 860 kg.
有些可以站立到 3 米高，重达 860 公斤。
weigh
v. 有……重；称重量
weight
n. 重量；分量
常见搭配
weigh about+数词 重约……
weigh over+数词 超过……重
weigh up to+数词 重达……
固定词组
put on weight 增加体重
lose weight 减重
Language points
up to
1.表示“直到、达到（某一时间、数量、程度等）”
用于时间：She stayed up to midnight working on the project.
她熬夜到午夜做项目。
用于数量/程度：The box can hold up to 20 books. 这个箱子最多能装20本书。
2.表示“从事、忙于（尤指不好或有趣的事）”
What have you been up to lately 你最近在忙什么？
3.表示“由……决定、取决于”
It's up to you to decide when to start. 什么时候开始由你决定。
自我检测
按要求写出正确的单词、词组或句子。
陆地 (名词) __________ 2. 非洲的 (形容词) ___________
3. 牡丹(名词) __________ 4. 莲花(名词) __________
5. 蝴蝶(名词) __________ 6. 称重 (动词) __________
7. 接近（短语）__________ 8. 相信（动词）________
9. 陆地最大的动物是非洲象。
___________________________
10. 它可能是世界上最有趣的植物。
_______________________
11. 它能称重到860千克。___________________
land
African
peony
lotus
butterfly
weigh
up to
believe
The biggest land animal in the world is the African elephant.
It can weigh up to 860 kg.
It is perhaps the most interesting plant in the world
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)
busy
the most careful
farther
happier
largest
I. 用所给单词的适当形式填空。
3. Lin Sen 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
II. 完成句子。
Plan a trip along the Silk Road using the new language.
China is an amazing country. It has the world’s _______ (high) mountain. The Yangtze River is its _______(long). Pandas are the ___________ (famous) of all the animals in our country. The Silk Road is the _______(old) trading road to the world. When we plan a trip, making choices doesn’t mean to choose the _________(good) or the _______________(expensive) one, but the __________ (proper) one.
best
most expensive
most proper
highest
longest
most famous
oldest
III. 用所给单词的适当形式填空

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