资源简介

(共22张PPT)
Unit 4
Amazing Plants and Animals
Section B (3a~4d)
学习目标
通过分析阅读文本，了解蓝鲸的一些内容；通过分析第一段的由第一人称视角改写第一段的内容，最后写一篇谈论蓝鲸的文章；
学会做一个有关一种植物或者一种动物的海报。
Lead in
What do you know about the blue whale
1. How many paragraphs are there in this article
Read the text and answer the questions.
Two.
2. What’s the topic sentence for each paragraph
Para.1: The blue whale is the largest and heaviest animal on earth.
Para.2: Blue whales play an important role in our world, so we must protect them.
新课讲授
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.
Read the text and complete the table.
3a
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
Read and learn
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）
例如：
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 ）；在表示活到某一年龄时，可与 “live up to” 替换。
例如：
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。
例如：
The boy standing there is my brother. 站在那儿的男孩是我弟弟。
standing there 修饰 the boy，可转换为 The boy who/that is standing there is my brother.
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.
3b
Complete your passage about the blue whale based on the text in 3a.
3c
Writing
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。
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
Let’s learn
How to use the first person to rewrite the second paragraph
points
lifespan
role /function
importance
Write your reply according to the information mentioned above. Pay attention to your spelling and structure.
Second paragraph：
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.
Now, you can exchange your writings with your partners to check each other’s writing.
Post-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
Work in groups. Choose or create the title of your poster.
4a
Project
In this unit, we learned about some amazing plants and animals.
Yes. The blue whale is the largest and heaviest animal in the world.
The cheetah runs the fastest among all land animals.
The most useful plant in the world is bamboo.
Moss is one of the oldest plants. It appeared on earth around 470 millions years ago.
The redwood tree is the tallest in the world.
Collect pictures and find out information about the plant or animal that you chose.
4b
What is its name
Where does it live / grow
Why did you choose it
What are some interesting facts about it
1. What is its name
Its name is sunflower.
2. Where does it live / grow
It mainly grows in sunny fields, meadows and farmlands in temperate and tropical regions. It needs plenty of sunlight to thrive.
3. Why did you choose it
I chose it because its bright yellow petals always face the sun, which gives people a feeling of warmth and vitality. It also symbolizes optimism and positiveness.
4. What are some interesting facts about it
Some interesting facts about sunflowers:
First, the head of a sunflower is actually made up of thousands of tiny flowers.
Second, sunflowers can track the movement of the sun across the sky during the day, a phenomenon called heliotropism.
Third, sunflower seeds are not only a popular snack but also an important source of oil.
Make your poster.
4c
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
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
课堂总结

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