牛津深圳版 七下 Unit4 Save the trees Reading 课件( 61张PPT)

Unit 4 Save the trees
Getting ready
Where are Hi and Lo?
What is Lo doing?
What is in Lo’s left hand?
They are in the
garden.
Lo is planting a tree seed.
An apple seed.
In this unit, we are going to talk about another of man’s best friends on Earth, trees.
What do trees do for us ?
oxygen for us
to breathe
produce
harmful gases
from the air
take in
A What do you know about …?
How much do you know about trees? Try the short quiz below.
1 Write down the names of the parts of a tree. Use the words from the box to help you.
branch fruit leaf root
branch fruit leaf root
fruit
root
leaf
branch
a. They help fight
against pollution.
b. They provide us with wood,
fruit, etc.
c. They are home to
birds and animals.
d. All of the above.
2 What do trees do for us?
B Before you read
Look at the pictures and the title of the interview on page 45. Then answer the questions below.
1 What do you think the interview is about?
a. The lives of trees.
b. Why trees are important in our daily lives.
2 What can we make from trees? Write down three examples.
____________________
____________________
____________________
paper
pencils
chairs
Trees in our daily lives
Rebecca wants to know more about trees and how they help us. She is interviewing Dr Jones about trees.
Read the first part of the conversation and answer the following question.
Why are trees major fighters against air pollution?
They keep the air cool and clean.
They take in harmful gases from the air.
They produce oxygen for us to breathe.
Read the second part of the conversation and answer the following question.
What can we get from trees?
Fruit
Oil
Tea and furniture
Read the third part of the conversation and answer the following question.
How many trees do people cut down every year?
People cut down millions of trees every year.
Read the text again and finish the Exercises.
Trees help us in many ways. Trees fight against air
pollution. They keep the air ______ and ______. They
take in ___________ from the air and ___________
for us to breathe. Trees make our lives more
_________. Many of the things in our daily lives come
from trees, such as _______ and ______. They also
give us ______, ______, and ______. A lot of ______
is ____________. Therefore, we should stop cutting
down _______ of trees every year if we don’t want a
world without trees.
Trees in our daily lives
cool
clean
harmful gases
produce oxygen
convenient
paper
pencils
fruit
oil
tea
furniture
made of wood
millions
Trees are important
Examples
Trees are major fighters against ____________.
They keep the air cool and clean.
They take in harmful gases from the air and produce oxygen.
Trees make our lives ____________.
Many things in our daily lives
such as paper and pencils come from trees.
We also get fruit, oil and tea
from trees.
A lot of furniture is made of
wood.
air pollution
more convenient
Trees in our
daily lives
D Comprehension
D1 Read the interview on page 45 and complete the notes below.
Trees in our daily lives
Trees are major fighters against __________. They:
keep the air ____________.
take in ___________ from the air and produce
oxygen.
Trees make our lives ______________.
Many of the things (e.g. paper and pencils) in our daily lives _______________.
We also get fruit, oil and tea from trees.
A lot of furniture is _______________.
air pollution
cool and clean
harmful gases
more convenient
come from trees
made of wood
IV. In groups, talk about what you can do to save trees .
Our promises
I promise to write on both sides of the paper!
I promise not to cut down trees!
I promise to plant more trees in the future!
I promise not to use throwaway chopsticks!
…
V. Imagine if we don’t protect the
trees, what will happen?
If we don’t save the trees:
Our environment will become wores and worse.
There will be more disasters such as sand storms and
typhoons.
People will get diseases.

In a word, not saving
the trees is polluting
the Earth and our home.
If we love the trees and protect the environment, our environment will become better and better. Trees are our friends.
Plant more trees and cut less trees.
(多植树,少砍树)
To promote the approach of protecting trees .
(宣传保护树木的方法)
What should we do to save the trees?
When you write, you can use both sides of paper.
(当你写东西的时候可以用纸
的两面)
Not to use disposable wooden products.
(不用一次性的木制品)
Don’t strip the bark or scribble carving on the trees.
(不剥树皮,不能在树上乱涂
乱刻)
C Vocabulary
C1 The words in italics are from the article on page 45. Circle the correct answers to complete these sentences.
1. Harmful gases are ____ people’s health.
a. good for b. bad for
2. Trees produce oxygen. They ___ oxygen.
a. take b. make
3. Air pollution is a major problem in the city.
This problem is ____.
a. big and important b. not very important
b
b
a
4. Washing machines make our lives more
convenient. With the help of them, our lives
become ____.
a. easier b. richer
5 When you imagine a picture, you have it ____.
a. on paper
b. in your mind
a
b
C2 Complete the poster below with the words from the box.
All about trees
Did you know trees(1)______ oxygen?
Did you know trees help us fight
(2)______ pollution?
Did you know the (3)_______ in our
classroom is made of wood?
produce
against
furniture
against convenient furniture major produce
Did you know trees make our lives very
(4)__________?
If you want to know more about trees, join our “All about trees” talk at 4 p.m. on 26 October (Tuesday). We will interview Dr Jones about the lives of trees and their(5)_______ uses.
convenient
major
against convenient furniture major produce
Strategy study
Using suffixes to guess meanings
用后缀猜词义
Look at these two sentences. Do you know the
meanings of useful and harmful?
Trees give us a lot of useful things.
(树带给我们许多有用的东西)
Trees take in harmful gases from the air.
(树木吸收空气中的有害气体)
Useful and harmful both end in -ful. It is a suffix meaning “full of”.
(有益的和有害的都以ful结束。这是一个后缀，意为“充满；装满”)
Can you guess the meanings of the following words?
hopeful
helpful
Can you give some more examples?
1. fight v. (过去式 fought) 与……作斗争
fighter n. 战士
fight against 与…作斗争（争吵），反 对…
We must fight against air pollution in our city.
我们必须与空气污染作斗争。
Notes P43-47
2. against prep. 反对
against的反义词是for，意为“支持，拥护”
Are you against or for the plan?
你是反对还是支持这个计划？
3. They provide us with wood, fruit, etc.
它为我们提供木材、果实等。
provide sb. with sth. = provide sth. for sb.
为某人提供某物
Sheep provide us with wool.
= Sheep provide wool for us.
绵羊为我们提供羊毛。
Practice
根据中文意思完成句子。
1. 政府为村民们提供法律服务。
The government _______ the villagers ______
legal service.
= The government _______ legal service ______
the villagers.
provides with
provides for
4. in many ways 在许多方面
way作可数名词，意为“方面，方式，道路”。
It’s the best way to study English.
这是学习英语最好的方法。
5. They keep the air cool and clean.
它们（树木）保持空气凉爽和清洁。
keep是动词，意为“保持；继续”。
常用句型有：
①keep sb / sth + adj.意为“使某人/某物保持某种状态”。如：
别伤心了。
Don’t keep yourself sad.
②keep doing ... 意为“继续做……”。如：
机器一直运转。
The machine kept working.
③keep sb / sth doing ...意为“让某人/某物一直/继续做……”。 如：
别让火一直烧着。
Don’t keep the fire burning.
Practice
根据中文意思完成句子。
1. 我们应该每天都保持教室清洁。
We should _____ _____ _____ _____ every day.
2. 他们在雨中继续踢足球。
They __________ ______ football in the rain.
3. 她昨天让我等了她半个小时。
She _____ _____ _____ for her for half an hour yesterday.
keep the classroom clean
keep / kept playing
kept me waiting
6. They take in harmful gases from the air and produce oxygen for us to breathe.
它们从空气中吸收有害的气体，制造氧气供我们呼吸。
①take in 吸收
Trees take in carbon dioxide.
树木吸收二氧化碳。
② harmful adj. 有害的
be harmful to 对……有危害
Smoking is harmful to your health.
吸烟有害健康。
形容词harmful 意为“有害的”，由名词
harm 加后缀.ful 构成。后缀.ful 表示“充满
……的；有……性质的”，常加在一些名词
或动词后面构成形容词。如：
beautiful 漂亮的；thankful 感激的。
Practice
写出下列单词的形容词形式及其中文意思。
1. care —
2. peace —
3. hope —
4. help —
5. use —
6. colour —
careful
peaceful
hopeful
helpful
useful
colourful
7. for example 例如
for example 与 such as 的区别
1) for example “例如” +句子、段落, 用来举例说明某一论点或情况,一般只举同类人或物中的“一个”为例, 可位于句首、句中或句末。
2) such as “例如”+单词、词组或动词ing，用来列举事物时,一般列举同类人或事物中的几个例子。插在被列举的事物与前面的名词之间,as后面不可有逗号。
如：
We got a lot of things from trees. For example, rubber is from rubber trees.
我们从树上得到了很多东西。例如，橡胶来自于橡胶树。
China has many big cities, such as Bejing, Shanghai, Guangzhou.
中国有许多大城市，例如北京、上海、广州。
8. A lot of the furniture is made of wood.
很多家具是木制的。
① furniture n.家具
为不可数名词，可用a piece of, an article of以
及some, much来修饰。
我们的家具不多。
We don't have much furniture.
床、椅子、桌子和书桌都是家具。
Beds, chairs, tables and desks are furniture.
② be made of 意为“由……制成”。如：
我的课桌是木制的。
My desk is made of wood.
注意区别：
be made of 从产品中能看出原材料
be made from 从产品中看不出原材料
这座小桥是石头砌成的。
The small bridge is made of stones.
葡萄酒是由葡萄制成的。
Wine is made from grapes.
根据中文意思完成句子。
1. 这种油是由花生制成的。
This kind of oil ____ ____ ____ peanuts.
2. 这些花是用纸做的。
These flowers ____ ____ ____ paper.
are made of
is made from
Practice
9. But we cut down millions of trees every year.
但是，我们每年都砍掉大量的树木。
① cut down 砍伐，砍倒
Don’t cut down the tree that gives you shade.
遮阴之树不可砍。
②million 意为“百万”，表示具体的数目时用单数形式；表示不具体的数目时用复数形式，且与of 连用，构成短语millions of，意为“大量的；数以百万计的”。如：
这栋房子价值两百万元。
The house costs two million yuan.
每年，数以百万计的游客来游览北京。
Every year, millions of tourists come to visit
Beijing.
类似million 用法的数词还有：
hundred和thousand。
选用million或millions of填空。
1. There are _________ books in the library.
2. There are over six ________ people in this
city.
million
millions of
Practice
10. We should stop doing this if we don’t want a world without trees.
如果不想让这个世界没有树木，我们就应该
停止这样做。
stop 在本句中作动词，意为“停止”，后面
可以接动词的?ing 形式或动词不定式，构
成stop doing sth 和stop to do sth，两者的
意义和用法有所区别。
【辨析】
stop doing sth 意为“停止做某事”，表示不
做这件事了；
stop to do sth意为“停下来去做某事”，表示
停下手中正在做的事，去做另一件事。
请对比：
当陈老师进来时，学生们都停止了说话。
The students stopped talking when Mr Chen
came in.
他累了，想停下来休息一会儿。
He is tired. He wants to stop to have a rest.
选择最佳答案。
( )1. The students stopped ___ and got ready for class.
A. talk B. to talk
C. talking D. to talking
C
Practice
( )2. The doorbell rang. My mother stopped ______ the door.
A. answer B. to answer
C. answering D. to answering
B
Dictation
save
pine
discuss
branch
root
fight
against
example
拯救
松树
讨论
树枝
根
与……作斗争
反对
例子
harmful
gas
produce
oxygen
major
convenient
furniture
imagine
有害的
气体
产生；生产
氧气
主要的
方便的
家具
相像；设想
take in
come from
for example
in fact
look around
(be) made of
millions of
吸收
来自
例如
(补充细节)确切地说
环顾四周
由……制成
大量的；数以百万计的
I. 选择最佳答案填空。
( )1. When the child saw his parents, he
stopped ____ and ran to them.
A. cry B. to cry
C. crying D. to crying
( )2. He watched TV for an hour. At 9 p.m., he
stopped ____ his homework.
A. do B. doing
C. to do D. to doing
C
C
II. 根据句意及所给单词的首字母写出所缺单词，注意其形式。
1. You are a great doctor. Thank you for s______ my life.
2. Can you i______ a world without air?
3. Don’t go into the room. There is bad g______ in it.
4. Eating too much sweets is h______ to our teeth.
5. I will d______ the problem with you this afternoon.
6. If you don’t understand, I’ll give you another e______ .
aving
magine
as
armful
iscuss
xample
III. 选择最佳答案填空。
1. You are excellent ____ many ways.
A. on B. at C. in D. for
2. I was watching TV at that time. When my
mother came into the room, I stopped ____ my book.
A. reading B. read
C. to read D. to reading
C
C
3. I stood up to ____ when a gentle hand touched
my shoulder.
A. look up B. look around
C. look after D. look for
4. If you want to ____, you had better take
exercise every day.
A. keep health B. keep healthily
C. keeping health D. keep healthy
D
B