(共34张PPT)
人教版八年级上册
Unit 4 Amazing Plants and Animals
SectionB
3a-3c&Project
Learning objectives
1. 能够通过阅读获取蓝鲸的基本信息，包括体重、栖息地、食物、寿命和在自然界中的作用，构建对蓝鲸物种的完整认知框架。
2.能够运用第一人称转换文本视角，以蓝鲸的口吻介绍自身特征，掌握人称和语态的变化；能够根据文本信息组织语言，独立完成一段关于蓝鲸的连贯描述。
3. 引导学生了解生物蓝鲸对于生态系统的重要性，从而进一步了解动植物对于生态系统的重要性。
4.运用本单元所学语言，选择或创建海报标题，收集所选动植物的图片和信息（名称、生长 / 栖息之地、选择原因、有趣事实等），制作海报并在班级展示，深化对动植物重要性的认识
1
2
3
They are huge .
They live in the sea.
They can sing songs.
4
They can jump high out of water.
5
Some of them are very clever and also very friendly.
whale
adj. 巨大的；极多的
Guess an animal
Warming-up
鲸的体型是世界上存在的动物中最大的，它是终生生活在水中的哺乳动物，对水的依赖程度很大。鲸形状像鱼，鼻孔在头的上部，用肺呼吸。它体长可达三十米，是现在世界上最大的动物。鲸为适应水中生活，减少阻力，它们的后肢消失，前肢变成划水的浆板。身体成为流线型，酷似鱼。因而它们的潜水能力很强，小型齿鲸可潜至100-300米的水深处，停留4-5分钟，长须鲸可在水下300-500米处待上1小时，最大的齿鲸——抹香鲸能潜至千米以下，并在水中持续2小时之久。
虎鲸
座头鲸
Let’s enjoy a video about blue whales.
Warming-up
What do you know about whales
live in the ocean
Facts about whales
the largest and heaviest animal
Its tongue is as weigh as an elephant
Their loudest sound can be heard up to 1,000 miles away.
Do you konw anything about them
Read the text quickly and circle some interesting facts about Blue Whale.
While-reading
3a
What information about blue whales can you find
Blue whale facts Weight
Where they live
Food
How long they live
Role in ecosystem
It can weigh as much as 200 tons.
In all oceans except the Arctic Ocean.
Some of the tiniest animals in the ocean, around four tons of them a day.
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, lasting for over a year and helping to create a lively and healthy ecosystem.
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
Find the key points.
Language points
Language points
Blue whales live in all oceans except the Arctic Ocean.
蓝鲸生活在除北冰洋以外的所有大洋中。
1
except：除…之外；除了， 不包括在整体之内，常与all, everything, everybody, always等词连用。强调“不包含”。
Everyone attended the meeting except Tom.
除了汤姆，所有人都参加了会议。—— 汤姆未参加，被排除在外
Besides English, she also speaks French and Japanese.
除了英语，她还会说法语和日语。—— 英语是基础，额外还会两种语言，包含在内）
The store is open every day except Sunday.
这家店除周日外，每天都营业。—— 周日不营业，被排除
易混词组 用法及例句
except 表示“除了……之外”。常用于指从整体中除掉一部分，可概括为“排除在外”。不可用于句首。
Wang did well in all subjects except sports.
除体育外, 王擅长所有的科目。（王的体育不好）
except for 表示“除了……之外”。相当于except，可强调整体中的不足之处,可概括为“美中不足”。可用于句首。
He is a good person to depend on except for his carelessness.
他是一个可以信赖的好人，就是有点儿粗心。（粗心是美中不足）
besides 表示“除……之外(还)”。表示整体中包括了除去的那部分,可概括为“包含在内”。可用于句首。
Not many people came besides those wives.
除了那些太太外，没有很多人来。（那些太太已经来了）
but 表示“除………之外”,常与no one、none、nothing 等连用,可与except 互换。
No one knows that secret but John.
除了约翰之外没有人知道那个秘密。（but 可换为except）
【对点训练】
1.(常州)My father goes back to Nanjing for the Spring Festival every year ________ last year because he was busy with his work in Changzhou.
A．including B．since C．except D．till
2．(黑龙江)Everyone except Mike ____(be) going to play basketball because he doesn't like it.
3.（眉山）Everyone is here e Alan, because he is still ill in hospital.
4.All the students have gone to the science museum ______ Tom. Because he is ill.
A. except B. besides C. expect
C
is
xcept
A
2
This food lasts for over a year and it helps to create a lively and healthy ecosystem.这些食物可持续供应一年多，有助于构建一个生机勃勃且健康的生态系统。
lively adj.精力充沛的；生机勃勃的
【辨析alive, living, lively与live】
考点 词性及意义 修饰对象 成分
alive
living
lively
live
adj. 活着；有生命的
既可指人，也可指物
作表语或后置定语
adj. 活着的；有生命的；健在的
指人或物
作定语
adj. 活泼的；充满生气的；生动的
既可指人，也可指物
作定语、表语或宾补
adj. & adv. 现场的；现场地
多指物
作定语或状语
【对点训练】
用alive, living, lively和live 填空。
(1)He told a _________ story about his life in Africa.
(2)The wilderness is a __________ museum of natural history.
(3)He is the only man _________ in the accident.
(4)(2024·无锡) The 2024 Wuxi Marathon was covered on TV.
(5)Though she is disabled, the girl teaches children drawing for a(n) . She always brings animals on the paper.
lively
living
alive
live
lively
living
alive
Let’s summarize!
介绍蓝鲸
主题
说明文
文体
第三人称
人称
一般现在时
时态
Passage Analysis
1
weight
people’s preference
living environment
feeding habit
Guess why blue whales don’t live in the Arctic Ocean
Passage Analysis
2
lifespan
role in ecosystem
importance
Q: As students, how can we protect blue whales from being harmed
Imagine you are a blue whale. Use the first person to rewrite the first paragraph.
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 __________________________.
My weight is as much as
swimming
most beautiful things to see
all oceans except the Arctic Ocean
some of the tiniest
around four tons of them a day
animal on earth.
the largest and heaviest
200 tons.
in the ocean. Many people like watching
me swim, and they think I am one of the
animals in the ocean.
人称由第三人称变成第一人称
3b
Complete your passage about the blue whale based on the text in 3a.
3b
文本体裁
话题分析
围绕 “蓝鲸（Blue Whale）”就其体重、生存区域、食物、寿命以及在生态系统里的作用等内容来写，让读者获取关于蓝鲸的知识。
记叙文+说明文：客观介绍蓝鲸的各类事实信息，清晰、有条理地阐述蓝鲸。
人称时态
用 “I（我）” 的视角和一般现在时，要写出亲切、有代入感的内容，让读者感觉是蓝鲸在 “自述”。
Hello, everyone! I'm Willy, a blue whale. I'm proud to be the biggest and heaviest animal on Earth. Can you believe I can weigh up to 200 tons That's like having hundreds of cars stacked together!
I swim freely in all the oceans around the world, except for the freezing Arctic Ocean. The water there is just too cold for me. My home is full of amazing creatures, and I especially love feasting on the tiniest animals in the ocean. Every day, I eat around four tons of them to keep my big body going.
Even though I'm huge, I love moving through the water. The ocean is my playground, and I enjoy showing off my swimming skills. I hope people will keep our ocean clean so that I and all my friends can live happily here forever.
Clean(1-4) 书写整洁
Complete(1-4) 内容完整
Correct(1-4) 语言准确
Coherent(1-4) 句子衔接
Rich(1-4) 语言丰富
Total 总分 _________/20 points
Score得分
Excellent 3-4分 Good 2-3分 To be improved 1-2分
评价项目
Assessment items
Finish the checklist with your partner(生生互评).
Do you know any interesting facts about animals and plants now
New drills
Read and guess:
It is one of the fastest-growing plants. It can grow almost one metre in one day. ___________
The largest and heaviest birds ever on earth. Some could stand up to three metres tall and weigh up to 860kg. ___________
They are very hard-working animals, and their greatest work is pollination. ___________
The biggest land animal in the world. ___________
The largest and heaviest animal in the world.___________
bamboo
the elephant birds
bees
African Elephant
Blue Whale
Project
Make a poster about a plant or a animal.
Work in groups. Choose or create the title of your poster.
4a
Title Option Possible Choices
The Strangest Animal Octopus, Platypus, Narwhal, …
（章鱼、鸭嘴兽、独角鲸）
The Cutest Animal Panda, Fox, Koala, …（熊猫、狐狸、考拉）
You can add more.
Title Option Possible Choices
The Most Amazing Plant Venus Flytrap, Rainbow Eucalyptus, …
（金星捕蝇草、彩虹桉树）
The Most Beautiful Animal Peacock, Mandarin Duck, Snow Leopard, …
（孔雀、鸳鸯、雪豹）
You can add more.
Title Option Possible Choices
The Oldest Tree Redwood tree, …（红杉树）
The Most Popular House Plant Chlorophytum comosum,
Epipremnum aureum,
Succulent plants, …
（吊兰、绿萝、多肉）
You can add more.
1. What is its name
2. Where does it live/grow
3. Why did you choose it
4. What are some interesting facts about it
Work in groups. Choose or create the title of your poster.
4b
Panda
Make your poster.
4c
Your work
The Most Amazing Plant
Present your poster in class. Then vote for the best one.
4d
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
Take care of animals and plants
because we cannot live without them.
谢谢
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