Unit 4 Amazing Plants and Animals Section B 课文全解(含听力音频) 课件 -人教版(2024)八年级上册

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Unit 4 Amazing Plants and Animals Section B 课文全解(含听力音频) 课件 -人教版(2024)八年级上册

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Unit4
Amazing Plants and Animals
Section B
How are plants and animals connected with us
1
教学目标
一、核心知识掌握
词汇:能熟练掌握描述动植物与生态关联的核心词汇,如ecosystem(生态系统)、protect(保护)等;理解并运用名词构词法(如 act→action,kind→kindness,important→importance)。
句型:能掌握宾语从句(如 “Scientists believe that bees are important”)、现在分词作定语(如 “animals living in the sea”)及关联表达(如 “play a part in...”, “be connected with...”)。
语法:理解宾语从句的陈述句语序;掌握现在分词短语作后置定语的用法;能运用名词后缀(-ance, -(t) ion, -ness, -ity)构成名词。
1
教学目标
二、基础技能训练
阅读:能快速抓取说明文(蜜蜂、蓝鲸)的关键信息(如生态作用、特征),完成思维导图和表格填空;能理解文本主旨(动植物与人类的依存关系)。
口语:能参与 “动植物与人类联系” 的讨论(如 1f),用英语举例说明生物间的依存关系;能小组合作介绍海报内容(4d),清晰表达动植物的 “神奇之处”。
写作:能用第一人称改写说明文(3b-3c),转换叙述视角且保持信息准确;能写 5 句以上含核心词汇的句子,描述动植物与人类的联系。
综合运用:能小组合作完成主题海报(4a-4d),整合信息并通过图文结合呈现动植物的特征及重要性。
1
教学目标
三、情感与文化目标
深化生态意识:通过了解蜜蜂、蓝鲸对生态系统的作用,认识 “人类 - 植物 - 动物” 的依存关系,树立保护自然的责任感。
培养合作精神:在海报制作与展示中,学会分工协作,尊重同伴意见,提升团队合作能力。
关注生活联系:发现身边动植物与人类的密切关系,体会 “自然与生活共生” 的意义。
2
教学重难点
一、重点
文本理解:把握《We Can't Live Without Bees》和蓝鲸相关文本的主旨,提取动植物的生态作用(如蜜蜂授粉、蓝鲸维持海洋生态)及与人类的联系。
语言知识:
核心词汇及名词构词法(如 act→action,important→importance);
关键句型:宾语从句(“...believe that...”)、现在分词作定语(“animals living in the sea”)、关联表达(“play a part in...”, “be connected with...”)。
技能运用:能将阅读信息转化为思维导图、表格,并用于口语讨论和写作改写。
2
教学重难点
二、难点
1.语法难点:
现在分词作定语与定语从句的转换(如 “animals living in the sea”=“animals which live in the sea”);
2.综合运用:
用第一人称改写说明文时的视角转换(既要保持科学信息准确,又要符合第一人称的表达习惯);
海报制作中信息的筛选与呈现(需兼顾 “神奇特征” 和 “与人类的联系”,避免信息冗余)。
目录
1
Reading 1a-1f
2
Vocabulary in Use 2a-2d
3
4
Homework
Reading & Writing 3a-3c
Project 4a-4d
Reflecting
5
6
By Yushen
PART 01
Reading
1a-1f
1
Lead-in
Think and share
What animals are important to our daily lives
cow(奶牛)
milk
bee(蜜蜂)
honey
chicken(鸡)
eggs and meat
dog(狗)
guard the house
horse(马)
transportation
2
Pre-reading
Look at the title and the pictures below. Guess what the text is about.
1a
without /w a t/ prep. 没有;缺乏
3
While-reading(Fast reading)
Read the text and underline the adjectives the writer uses to describe bees.
1b
hard-working
most important
most interesting
interesting
important
most amazing
3
While-reading(Careful reading)
Read again and complete the mind map with the information from the text.
1b
Bees
●their greatest work: _____________________
●visit: ________________________________
●help:________________________________
●their number is: _____________________
● _______________
_______________
_______________
_______________
_______________
_______________
● _______________
_______________
_______________
_______________
_______________
_______________
importance
problem
interesting facts
pollination
50 to 100 flowers on one trip
plants grow
dropping
They work hard
together to make
their homes.
They create
honeycombs to
store honey.
They use a dance
to communicate
where and how
far away the
food is when they
find new food.
importance
/ m p tns/ n. 重要性
Imagine you go to the supermarket in your area, but there are almost no fruits, vegetables, honey, milk, eggs, or chocolate. How would you feel Disappointed Angry Sad At this moment you realize people, plants, and animals are all connected. We need each other to live, and bees are one of the best examples of this connection.
Let’s learn!
Paragraph 1
connect /k nekt/ v. 关联;连接
/k nekt d/ adj. 连接的;相关的
/k nek n/ n. 联系;连接
be connected with / to
与…相连;与…有关联
disappointed / d s p nt d/
adj. 失望的;沮丧的
/ m d n/
v. 想象;猜想
此刻
Bees are very hard-working animals, and their greatest work is pollination. On one trip, they often visit 50 to 100 flowers. As they fly from one flower to another, they take pollen with them. This action helps plants grow. In fact, without their work, about 80 per cent of the plants in the world cannot grow. For this reason, many scientists believe that bees are the most important animals on this planet.
Paragraph 2
/ p l ne n/ n. 授粉
as, 连词,当....时候
pollen / p l n/ n. 花粉
/ k n/ n. 行动;行为
确切地说;实际上
/p sent/ (= percent)
n. 百分之… adj. & adv. 每一百中
出于这个原因
/ pl n t/ n. 行星
Bees are also one of the most interesting animals in the world. For example, they work hard together to make their homes. In order to store honey, they create honeycombs. Another interesting thing about bees is how they communicate. When a bee finds new food, it uses a dance to tell the others where and how far away the food is.
Bees play an important part in the ecosystem of our planet. However, the number of bees is dropping, and scientists are worried. They need our help, and there is a lot we can do. Think about what you can do to protect one of the most amazing animals on earth.
Paragraph 3-4
为了;以便
/st (r)/ v. 贮存;存储n. 百货商店;商店
/ h nik m/ n. 蜂巢
/k mju n ke t/v. 交流;沟通
play a part (in sth)参与某事
/ i k s st m/ n. 生态系统
/pr tekt/ v. 保护;防护
...的数量
4
Post-reading
Discuss the questions.
1b
1. Can you give another title for the text
The important Role of Bees in Our World
Why Bees Matter to Us
Why Bees Are So Important
...
Question 1
title / ta tl/ n. 标题;题目;名称
Question 2
2. What other interesting facts do you know about bees
Different jobs:In a bee colony/ k l ni/ n. 蜂群, there’s a queen /kwi n/ n. 蜂后 (she lays eggs), drones/dr nz/ n. 雄蜂 (they mate with the queen), and worker bees工蜂 (all female!). Worker bees do everything — find food, build the hive, and protect the colony.
Stinging Means Death. the bee will die after stinging. sting /st / v. 蜇
Bees can recognize human faces. They use their visual and olfactory senses to distinguish different pelple.
/ v u l/ adj. 视觉的 / l f kt ri/ adj. 嗅觉的
/d st ɡw / v. 区分,辨别
Question 3
3. What do you know about the connection between humans and other insects, such as ants and butterflies
Food source: Some ants get into kitchens to look for food, making our meals dirty. Some ants chew on wooden furniture or wires, which might cause fires.
/t u / v. 咀嚼;嚼碎 chew on持续啃咬
Ecosystem balance: They dig tunnels / t nl/ n. 洞穴in the soil. This lets air and water reach plant roots easily, helping plants grow.
Ants
human / hju m n/
n. 人adj. 人的;人类的
Question 3
3. What do you know about the connection between humans and other insects, such as ants and butterflies
Pollination: Like bees, butterflies are important pollinators. This helps plants make seeds and have babies.
Indicator species(指示物种): The number of butterflies is connected with the environment环境. If there’s more pollution or their homes (like forests) are destroyed /d str / v. 破坏, fewer butterflies will live.
butterflies
Imagine you are the writer. Write one more paragraph about bees and add it to the text.
1e
There are many ways we can do. First, we can plant bee-friendly flowers and plants in our gardens or balconies. These provide bees with nectar and pollen. Second, avoid using pesticides as they can harm bees. Instead, try natural pest-control methods. Finally, let more people know the importance of bees and protect bees together.
For example
How do you understand the connection between people, plants, and animals Think of some examples and then share them with a partner.
1f
A: We all know people and nature are connected. But can you give me an
example of how they are connected
B: Sure. I visited a small town in Guangdong once. There are many large trees
in the town. They are home to many birds. A lot of tourists come to see
the trees and the birds …
be home to sb / sth
有…栖息;是…的家乡
举例
For example
A: We all know people and nature are connected. But can you give me an
example of how they are connected
B: Sure! Farmers plant rice. Frogs eat pests in the rice fields. Then people get rice to make food.
C:Farmers grow grass. Cows eat the grass. Then people drink fresh milk.
Language Points
1. At this moment you realize people, plants, and animals are all connected. 在这一刻,你意识到人、植物和动物都是相互关联的。
(1) connect /k nekt/ v. 关联;连接
connect A with/to B 把 A 与 B 连接起来;使 A 和 B 有联系
(2) connected /k nekt d/ adj. 连接的;相关的
(3) be connected with / to 与…相连;与…有关联
The man was connected with the theft. 这个人与这起盗窃案有关。
We should connect theory with practice. 我们应该把理论和实践联系起来。
(4) connection /k nek n/ n. 联系;连接
Language Points
2. As they fly from one flower to another, they take pollen with them. 当它们从一朵花飞到另一朵花时,会随身携带花粉。
as是连词,引导时间状语从句,表示 “当… 时;随着”,强调主从句动作同时发生。
【拓展】
(1) 介词,表示 “以…身份;当作”,后接名词或代词。
She works as a teacher. 她作为一名教师工作。
I treat him as my best friend. 我把他当作我最好的朋友。
Language Points!
(2) 连词,因为,由于,引导原因状语从句,相当于 because,但语气较弱,常用于口语。
We stayed at home as it was raining. 因为下雨,我们待在家里。
As he was ill, he couldn’t go to school. 由于他生病了,不能去上学。
(3)连词,尽管,虽然,引导让步状语从句,需倒装
从句需将表语、状语或动词原形提前至句首,主句不变。
Young as he is, he knows a lot. 尽管他年轻,却知道很多。
Hard as they tried, they failed. 尽管他们努力了,还是失败了。
Language Points!
3. For this reason, many scientists believe that bees are the most important animals on this planet. 因此,许多科学家认为蜜蜂是这个星球上最重要的动物。
Think about what you can do to protect one of the most amazing animals on earth.
想想你能做些什么来保护地球上最神奇的动物之一。
宾语从句:that bees are the most important animals on this planet
宾语从句:what you can do to protect…
注意:
宾语从句用陈述句语序,即 “主语 + 谓语 + 其他”。
Exercise
选择
Frogs _____in protecting rice fields — they eat pests that harm the crops.
A. play a part B. do a part C. make a part
2.We can _______ the health of butterflies _______ the health of the environment — fewer butterflies often mean worse pollution.
A. connect; to B. connect; with C. connect; for
3.Bees depend on flowers _______ they provide nectar for them to make honey.
A. when B. as C. if
A
B
B
By Yushen
PART 02
Vocabulary in Use 2a-2e
Circle the odd ones. Then give your reasons.
2a
1. habit height size weight
2. joy happiness fun enjoy
3. angry disappointed smart sad
4. appear look seem watch
5. honey milk juice bread
happiness/ h pin s/
n. 幸福;快乐
disappoint / d s p nt/
v. 使失望;使破灭
Add the endings -ance, -(t) ion, -ness, and -ity to form nouns. Use your dictionary.
2b
1. act _________________ 2. good _________________
3. kind _________________ 4. appear _________________
5. real _________________ 6. imagine _________________
7. connect _________________ 8. popular _________________
9. communicate _________________ 10. important _________________
action
goodness
kindness
appearance
reality
imagination
connection
popularity
communication
importance
Complete the sentences with the correct forms of the words in the box.
2c
1. I felt ________________ when my favourite flowers died.
2. After the rain, some mushrooms ________________ in the garden.
3. In my hometown, people often use bamboo baskets to ________________ food.
4. What did you put in your luggage It ________________ a ton.
5. I can’t ________________ my life without my pets. They mean a lot to me.
appear disappoint imagine store weigh
disappointed
appear
store
weighs
imagine
/ m r m /
n. 蘑菇;伞菌
ton /t n/ n. 吨
Complete the passage with the correct forms of the words in the box.
2d
You may not realize it, but frogs play an important role in our ____________ ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. Many people know that frogs help to ____________ farms by eating insects. ____________, not everyone understands their ____________ in nature. Frogs can live on ____________ and in water. Because of this, they are popular subjects in studies on climate change and the ecosystem.
however important land planet protect
planet's
protect
However
importance
land
/r l/ n. 作用;职能;角色
play a role (in)
在…中发挥作用;
扮演角色
pea /pi / n. 豌豆
/ kla m t/ n. 气候
By Yushen
PART 03
Reading & Writing 3a-3c
Watch the video
1
Pre-reading
What do you know about the blue whale
the largest mammal animal
in danger
live in deep ocean
live on krill(磷虾)
breathe with lungs /l z/ 肺
sound-communicate/ gudie direction
2
While-reading
Read the text and complete the table.
3a
Weight
Home
Food
lifespan
Role in ecosystem
Read and learn
The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day.
Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them.
在地球上
多达,达到… 之多
/ n/ n. 大海;海洋
/ k sept/ prep. 除…之外;除了
tiny / ta ni/ adj. 极小的;微小的
live up to 达到;符合
lively / la vli/ adj. 精力充沛的;生机勃勃的
扮演一个重要的角色
Imagine you are a blue whale. Use the first person to rewrite the first paragraph.
3b
Hello everyone! My name is Billy the Blue Whale. I am ____________________________
_________________________________________________________________________
I’m heavy, but I love ________________________________________________________
_________________________________________________________________________
I live in __________________________________________________________________
My favourite food is ________________________________________________________
I can eat __________________________________________________________________
the largest and heaviest animal
on earth. My weight is as much as 200 tons.
swimming in the ocean. Many people like watching me swim, and
they think I am one of the most beautiful things to see
all oceans except the Arctic Ocean.
some of the tiniest animals in the ocean.
around four tons of them a day.
3
Post-reading(Writing)
Complete your passage about the blue whale based on the text in 3a.
3c
写作指导
文本体裁
话题分析
要求写完成段落的改写,主要改写内容为3a第二段的内容,涉及到蓝鲸的寿命和对生态环境的重要性等内容。
本文将第三人称的段落内容,改写为第一人称的段落内容。分析原文章属于介绍类文章,改写后,还是自身特性介绍,因此是说明文。
人称时态
以第一人称为主;以一般现在时为主。
Observe and think
How about Matt
I can live up to 90 years.
When I die at sea, I become food for many kinds of animals living in and around the sea.
This food lasts for over a year and helps to create a lively and healthy ecosystem. I play an important role in our world, so you must protect me.
Language Points
1. Blue whales can live up to 90 years. 蓝鲸的寿命可达 90 年 。
live up to 达到;符合(期望等);活到(某一年龄、岁数等)
He always lives up to his parents' expectations. 他总是不辜负父母的期望。
【拓展】同义词
reach 达到(某一数量、程度、年龄等);表示活到某年龄时,可替换 live up to
Some trees can reach a height of 30 meters. 有些树能长到 30 米高 。
Some people can reach 90 years old. 有些人能活到 90 岁 。
Language Points
2. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. 当一头蓝鲸在海洋中死去时,它会成为生活在海洋里及海洋周边的多种动物的食物。
living in and around the sea 整体是现在分词短语作后置定语,修饰前面的 animals。相当于一个定语从句 which/that live in and around the sea。
The boy standing there is my brother. 站在那儿的男孩是我弟弟
可转换为 The boy who/that is standing there is my brother.
By Yushen
PART 04
Project 4a-4d
Work in groups. Choose or create the title of your poster.
4a
Collect pictures and find out information about the plant or animal that you
chose.
4b
1. What is its name
It’s called Devil’s Ivy魔鬼常春藤, but in Chinese, we know it as 绿萝 (Luó Lǜ).
2. Where does it live / grow
People grow it all over the world as a houseplant. It can live in pots, hanging baskets, or even just a glass of water!
3. Why did you choose it
I chose it because it’s easy to care for.It cleans the air by absorbing吸收 harmful chemicals化学物.Its long vines /va n/藤蔓 look beautiful in any room.
4. What are some interesting facts about it
It’s called “Devil’s Ivy” because it’s almost impossible to kill—it can live with little water or light.
If it climbs up a stick or wall, its leaves get much bigger than when it hangs down! In the wild, its vines can grow as long as 20 meters!
Make your poster.
4c
Present your poster in class. Then vote for the best one.
4d
By Yushen
PART 05
Reflecting
1. What amazing plants and animals did you learn about in the unit
2. When do you use the superlative forms of adjectives and adverbs
3. Can you describe some amazing plants or animals in the world
4. How are we connected with plants and animals
Reflecting
By Yushen
PART 06
Homework
1.Go and take a photo of a plant or an animal in daily life, then describe their connection with humans and their importance.
Thanks

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