Unit 3 Trees and us Section 1- Reading课件-新沪教版七下

(共43张PPT)
Reading I
Key question
Why do we need trees
Unit 3 Trees and us
主题范畴：人与自然
Unit objectives
After learning this unit, I can:
understand what trees do for us.
identify amazing facts about trees.
describe what we can do to help protect trees.
explain the relationship between trees and humans.
解释树木和人类之间的关系。
了解树木为我们做的事。
识别有关树木的令人惊叹的事情。
描述为了保护树木我们能做的事。
Guessing game
Read the sentences below. Can you guess what they are describing
Some are big, some are small.
Most of them change colours in different seasons.
They make our school beautiful and comfortable.
They can make the air fresh.
They help us fight pollution.
Trees!
Do you like trees
Can you name the trees in our school
What is your favourite tree
Do you think trees are amazing
Free talk
Before you read
fruit
branch
trunk
root
flower
leaf（leaves）
Before you read
Pair work
Prediction
It’s mainly about the importance of trees.
What is the article mainly about
(Pay attention to the introduction, title, pictures and the first sentence of each paragraph.)
Pre-reading
Our silent friends
From the deepest forests to our towns and cities, trees are all around us. We share our world with trees. They are our silent friends, but we often overlook them.
In fact, trees are very important for all living things on Earth. To begin with, forests are a safe place for animals, insects and plants to live. Trees are also good for us humans because they take in greenhouse gases like CO2 and produce oxygen. This means they help create a clean environment for everyone on this planet.
While-reading
Trees make our lives more convenient. Many of the things around us, such as paper and pencils, come from trees. Just look around your room—a lot of the furniture is made of wood. Trees also provide us with delicious fruit and wonderful drinks. For example, we can make tea from the leaves of the tea tree.
Trees do so much for us. We can’t imagine a world without them. However, humans are not treating trees in a kind way. We are cutting down forests all around the world. We are polluting the water and the air, and this harms trees. All these things are a big problem. We need to do more to protect trees and save our planet.
animals, insects and plants
greenhouse gases like CO2
oxygen
more convenient
paper and pencils
is made of wood
delicious fruit and wonderful drinks
Reading for details
Reading for structure
Use linking words (连接词) to make ideas more logical(有逻辑的).
Give examples to make your argument more persuasive(有说服力的).
Reading for structure
Do you know other linking words
Find out the examples and the link words in paragraph 3.
Look around our classroom. What else comes from trees Give more examples.
事实(fact)是关于世界的真实信息。
观点(opinion)是个人的感受和信念。
Many of the things around us, such as paper and pencils, come from trees.
For example, we can make tea from the leaves of the tea tree.
We are cutting down forests all around the world.
We are polluting the water and the air, and this harms trees.
In fact, trees are very important for all living things on Earth.
Forests are a safe place for animals, insects and plants to live.
Trees make our lives more convenient.
We can’t imagine a world without them.
However, humans are not treating trees in a kind way.
We need to do more to protect trees and save our planet.
Post-reading
Discuss the questions below .
(1) What is the purpose of the article What does the author want to tell us
(2) How do you understand the sentence “We can’t imagine a world without them (line 17)”
(3) What else do trees do for us
Trees are very important!
Trees are our silent friends!
Let’s protect trees together!
silent
oxygen
convenient
wood
treat
Vocabulary practice
silent
treat
oxygen
convenient
wood
2 Complete the information column on the school website with the words from Exercise 1. Change the form if necessary.
3 Make sentences about what trees do for us with the words and expressions below.
Trees are important because they produce oxygen for us.
可以在某些名词末尾加上-ful和-less来构成形容词。
-ful表示“充满的；有……性质的”。-less表示“没有；无”。
例如： use → useful 有用的 use → useless 无用的
harm → harmful 有害的 harm → harmless 无害的
More examples:
careful; hopeful; helpful; powerful; colourful;
careless; hopeless; helpless; powerless; colourless;
homeless; endless
Reading II
Key question
Why do we need trees
Unit 3 Trees and us
主题范畴：人与自然
Revision
Complete the passage according to the text.
Trees are everywhere, from forests to our towns. We live with trees, but we often ignore them. Trees are very for life on Earth. They are home to animals and plants. Trees help us by in greenhouse gases like CO2 and giving us , making the air clean.
Trees make lives more . Many things like paper and pencils come from trees. Look around—lots of furniture is . Trees give us fruit and drinks, like tea from tea tree leaves.
Trees do a lot for us. We can’t life without them. But people are trees in a bad way. We cut forests and pollute water and air, which hurts trees. This is a big problem. We need to
trees and save our .
important
taking
oxygen
convenient
wood
imagine
treating
down
protect
planet
Phrases
Find out the phrases from P35 to P37.
1. 利用；使用 _________________ (P35)
2. 给某人提供某物 _________________ (P36)
3. 对……有好处 _________________ (P36)
4. 吸收；摄入 _________________ (P36)
5. 帮助做某事 _________________ (P36)
6. 温室气体 _________________ (P36)
7. 跟某人分享某物 _________________ (P37)
make use of
provide sb. with sth.
be good for
take in
help do sth.
share sth. with sb.
greenhouse gas
8. 确切地说 _________________ (P37)
9. 首先；第一点 _________________ (P37)
10. 来自 _________________ (P37)
11. 环视；环顾；四下察看____________ (P37)
12. 由……制成 _________________ (P37)
13. 例如；譬如 _________________ (P37)
14. 以友善的方式 _________________ (P37)
15. 砍倒 _________________ (P37)
to begin with
come from
look around
in a kind way
cut down
be made of
for example
in fact
Language points
1. To begin with, forests are a safe place for animals, insects, and plants to live.
句意: 首先，森林对于动物、昆虫和植物来说，是个安全的栖息地。
to begin with “首先；第一点” ，常用于句首，引出一系列观点、陈述或事件中的第一个，相当于 “firstly” “first of all” “at first”。
to live 修饰前面的 “a safe place”，说明这个安全的地方是供动物、昆虫和植物生存的。
即学即练
1.首先，我想简要讲讲这项工作的重要性。
_____ _____ _____, I'd like to tell in brief the importance of the work.
2.The earth is the best place for us ____.
A. live B. to live C. living
3. This house is big enough for us ____.
A. live B. to live C. to live in
To begin with
live 是不及物动词，此处表示住的地方，需要加介词 in，构成 live in the house
2. Just look around your room—a lot of furniture is made of wood.
句意：环顾一下你的房间——很多家具是由木头制成的。
be made of “由……制成”，指能从物品中看出原材料
*be made from “由……制成”，指看不出原材料
*be made in “在……地方制造”或“在……某时间制造”
*be made by “由……制造”，后接人，强调制造者
例如：1. 这种酒是用葡萄酿造的。
The wine is made from grapes.
2.这块手表是汤姆 1987 年在法国制造的
The watch was made by Tom in France in 1987.
即学即练
1. Paper is made ______ wood.
A. of B. from C. in D. by
2.The chair is made ______ bamboo.
A. of B. from C. in D. by
3.These shoes are made ______ China.
A. of B. from C. in D. by
4.The beautiful kite is made ______ my grandfather.
A. of B. from C. in D. by
公司给我们提供了新电脑。
The company _______ us _______ new computers.
= The company _______ new computers _______ us.
3. Trees also provide us with delicious fruit and wonderful drinks.
句意：树木还为我们提供美味的水果和好喝的饮料。
即学即练
provided with
also “也”，用于肯定句中
provide sb. with sth. “为某人提供某物”
= provide sth. for sb.
provided for
4. Many of the things around us, such as paper and pencils, come from trees.
句意: 我们周围的许多东西，如纸和铅笔，都来自树木。
come from “来自” ，等同于 be from。
such as “例如” ，用于列举多个事物，后直接跟名词或动名词
for example “例如” ，用于列举一个例子，
用逗号隔开，后面通常接一个完整的句子
5. For example, we can make tea from the leaves of the tea tree.
句意: 首先，森林对于动物、昆虫和植物来说，是个安全的栖息地。
即学即练
1. I ____ from China and I'm proud of my country.
A. come B. comes C. am D. A and C
2.There are many kinds of sports I like, ____ swimming, running and basketball.
A. such as B. for example C. as D. like as
3.You can choose any color you like. ____, you can choose red if you like warm colors.
A. Such as B. For example C. Like D. And so on
5. However, humans are not treating trees in a kind way.
句意：然而，人类并没有善待树木。
however 副词 “然而”，起到转折的作用，通常用逗号与句子其他部分隔开。
are not treating 是现在进行时的否定形式
in a … way “以……方式”
1. She is always busy with her work. ____, she tries to spend
some time with her family every day.
A. Therefore B. However C. Besides D. Moreover
2. 护士正在亲切地照料病人。
The nurse __ _______ the patient __ __ _____ ____.
即学即练
is treating
in a kind way
Practice makes perfect!
I. 根据汉语意思完成句子，每空一词。
1. 植物可以吸收像二氧化碳这样的温室气体，并释放氧气。
Plants can __________ ___________ ____________ __________ like carbon dioxide and release oxygen.
2. 这张桌子是由木头制成的。
This desk __________ __________ __________ wood.
3. 警察环顾四周，没有发现任何奇怪的东西。
The police _________ _________ and didn’t find anything strange.
take in greenhouse gases
is made of
looked around
4. 我们的英语老师来自澳大利亚。
Our English teacher __________ __________ Australia.
5. 首先，我将在上课前阅读课本。
__________ __________ __________, I will read the textbook before class.
6. 我们应该停止砍伐树木。
We should stop __________ __________ trees.
7. 例如，我通过做很多练习题来学习数学。
____________ ____________, I study math by doing lots of
exercises.
comes from
To begin with
cutting down
For example
Imagine flying in the sky like a bird.
She asked for help in a friendly way.
The library provides readers with books.
In this class, we have learned
new words and expressions in the text.
the detailed information and the structure of the text.
some important language points in the text.
Summary
Self-assessment
How well do you know about this lesson Tick the boxes.
I understand the new expressions in the post. 口 口 口
I understand the detailed information about the post. 口 口 口
I know how to retell the passage with key words. 口 口 口
I think I can use all language points correctly. 口 口 口
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