资源简介

(共27张PPT)
Section B 3a-3c
The blue Whale
Unit 4 Amazing Plants and Animals
01
02
03
04
教学目标
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。
掌握核心词汇（weight, ton 等）能通过略读、寻读提取蓝鲸信息，用 5-6 句话描述其特征并改写为第一人称文本。
理解蓝鲸对海洋生态的价值，树立保护生物多样性的意识
运用表格整理信息，通过小组合作完成语言输出任务。
学会梳理说明文 “特征 - 作用” 的逻辑结构，分析动物与生态的关联。
教学重难点
01
02
重点：提取蓝鲸关键信息，掌握描述动物特征的词 汇与句式。
难点：第一人称文本转化，理解 “鲸落” 的生态意 义。
Watch the video
1
Lead-in
Think and say
What does this video talk about
They are huge animals.
They live in the sea.
They can sing songs.
They can jump high out of water.
They are clever and friendly.
whales
What do you know about whales
Let’s guess
2
Pre-reading
Introduction
What do you know about the blue whale
marine
mammal
biggest
animal
endangered
species
Place:
deep ocean
Food:
krill（磷虾）
...
Watch the video
people like watching blue whales swim
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.
Blue whale facts
Weight
Where they live
Food
How long they live
Role in ecosystem
3a Read the text and complete the table.
as much as 200 tons
Someof the tiniest animals in the ocean.
They can live up to 90 years.
It helps to create a lively and
healthy ecosystem.
Let’s read for details
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
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. I can weigh as much as 200 tons./ My weight is as much as 200 tons.
Imagine you are a blue whale. Use the first person to rewrite the first paragraph.
3b
Observe and think
What should we mainly pay attention to when rewriting an article
人称: 由第三人称变成第一人称
内容要点: 要点不能省略或者遗漏。
语言: 个别句子需要变化结构
weight
living area
food
amount of food eaten
preference
3b 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 __________________________________________________________________.
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.
How to use the first person to rewrite the second paragraph
points
lifespan
role /function
importance
They are in great danger.
When a blue dies at sea, it becomes food for many of animals living in and around the sea .
1. What is " Whale Fall "
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.
2. What happened to the blue whale
read paragraph 2 and think
Why are they in danger
1. 人类为了肉、脂肪和油抓捕鲸鱼
Humans_______ whales for _____, fat and oil.
catch
meat
2. 海水污染越来越严重
The water pollution is getting ________________________(serious)
more and more serious
3. 人类向大海里扔了大量垃圾。
People_______ a lot of rubbish ____ the sea.
throw into
How can we protect them
Task 1：Disscuss in group
学习要求： 小组讨论关于拯救蓝鲸方法,写下如何解决蓝鲸面临的危机，做好展示准备。
参考句型：1.We can/cann't.... 2.We could/couldn't ...
3.We should/shouldn't ... 4.We must...
学习时间：3分钟，展示3分钟
Blue whales play an important role in our world, so we must .
protect them
First,________________________________________.
Then,_______________________________________________.
Finally_______________________________________.
Whales are very import for us,Let's take action now!
To protect whales,we should try our best.
We shouldn't throw rubbish into the ocean.
Governments should make strict rules to protect blue whales.
We can reduce plastic use and spread the word about their protection
Post-writing
Beginning
Body
Ending
（引出话题）
（详细介绍）
（升华主题，呼吁保护）
Today, I'd like to introduce my favourite
plant/animal--________.__________________
______________________________________.
(外貌特征)_______________________________
(生活习性) _______________________________
(生存现状) _______________________________
(保护措施) _______________________________
__________ are an important part of nature.
We need to save them.
Protect Blue Whales
Blue whales are the largest animals on Earth. They play a key role in the ocean ecosystem but face serious dangers now. Ship strikes, ocean pollution and illegal hunting put their lives at risk.
We must do something to save them. Governments should make strict rules to protect blue whales. We can reduce plastic use and spread the word about their protection. Let’s act now to keep these amazing creatures safe.
Write your article according to the information mentioned above. Pay attention to your spelling and structure.
Be careful!
Now, you can exchange your writings with your partners to check each other’s writing.
Checklist Self-evaluation Peer-evaluation Teacher-evaluation
Clear structure
Topic sentence
More relative information
Right linking words
Right grammar
Right spelling
Good handwriting
Great Good Try harder
Who wants to share your writing
Don't be shy! Just have a try!
Come on!
Introduce your favourite plant or animal.
Q1: What can they do
Q2: How are they connected with us
Homework: Make your poster.
Name: _______
weight:________
Age: __________
Hobbies:_______
Habits: ________
Summary
New words
Project
ocean; except; tiny; lively
Make a poster about a plant or an animal
Use the first person to rewrite the second paragraph
(1) 人称: 由第三人称变成第一人称
(2) 语言: 个别句子需要变化结构
(3) 内容要点: 要点不能省略或者遗漏。
Reading &
Writing
Expressions
live up to
Homework
1. Finish and polish your composition for 3c and submit it in next class.
2. Recite the key words and sentences of this lesson.
SEE YOU NEXT CLASS!

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