牛津深圳版七年级下 4.1 Unit 4 Reading（课件）+嵌入音频

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Unit 4 Save the trees
Reading
牛津深圳版七年级下册
Trees are our friends.
Trees are important in our daily life.
In Unit 3 we talked about our friend: animals , in this Unit we are going to talk about man’s another friend: trees
1
课堂导入
Trees are so important.
But how much do you know about them
Can you say out the parts of the tree
branches
roots
leaves(leaf)
stem/trunk
growth rings
What do trees do for us
Trees provide us with fruit.
=Trees provide fruit for us.
=We can get fruit from trees.
Fruit, furniture
We can also use trees to make many things such as: chopsticks, furniture, paper and so on.
What do trees do for us
Leaves provide shade for
people. They can keep us cool.
Leaves
We can also get oil and tea from some special trees.
What do trees do for us
They are major fighters against air pollution.
Leaves
They help fight against air pollution.
Most importantly, they can make the air fresh and clean.
How do they fight against air pollution
Leaves can change harmful gas into oxygen, so they can make
the air fresh and clean.
co2
O2
take in
give out
produce oxygen for us to breathe
Trees can make the world more beautiful and green.
What do trees do for us
Branches provide home for animals such as birds.
branches
Branches are home to animals such as birds.
Trees make our lives more convenient.
wood
chopsticks
paper
pencils
furniture
2
课堂活动
A What do you know about…
branch　fruit　leaf　root
fruit
branch
leaf
root
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.
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.
Rebecca: How do trees help us, Dr Jones
Dr Jones: They help us in many ways. They keep the air cool and clean. They
take in harmful gases from the air and produce oxygen for us to
breathe. They’re major fighters against air pollution.
Rebecca: I know trees also make our lives more convenient.
Many of the things in our daily lives come from
trees. For example, paper and pencils.
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.
Dr Jones: You’re right, Rebecca. In fact, we get a lot more
from trees. We get fruit and oil from them.
Tea also comes from the leaves of trees.
Look around this room. A lot of the furniture
is made of wood. Trees are really important in our daily lives.
Rebecca: I can’t imagine a world without trees.
Dr Jones: But we cut down millions of trees every year. We should stop
doing this if we don’t want a world without trees.
Read the second and third part of the conversation and answer the following question.
Fruit
Oil
Tea and furniture
What can we get from trees
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
Topic sentences Trees are really ________ in our daily lives. They help us in many ways.
Useful trees Products from trees
Trees in danger Facts People cut down _________
trees every year.
What to do We should stop __________
so many trees.
important
Millions of
cutting down
furniture
fruit and oil
papers and pencils
tea
The table below tells us some facts about trees. Read it and complete the table.
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
C Vocabulary
The words in italics are from the article on page 45. Circle the correct answers to complete these sentences.
C1
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
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
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.
produce
against
furniture
convenient
major
against convenient furniture major produce
C2
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
D Comprehension
Read the interview on page 45 and complete the notes below.
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
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。
Language points
根据中文意思完成句子。
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
3. 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.
2. 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。
4. 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。
5. 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。
6. 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.
7. 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。
【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.
8. 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。
3
课堂小结
1.We have read an interview about trees.
2. We have grasped the new words and expressions in the reading.
1.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
4
课堂训练
2. 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
( ) 5　If you want to ___, you had better take exercise every day.
A. keep health B. keep healthily C. keep healthy
( ) 6　You have worked for 3 hours. Why not stop ___ a rest
A. to have B. having C. have
( ) 7　We should stop people ___ trees.
A. cut down B. cutting down C. to cut down
C
A
B
( ) 8　– They are ___ of people here in our city.
　　　– Actually, there are three ___ people here in our city.
A. millions; million B. millions; millions C. million; million
( ) 9　– What a nice dress! Is it ___ silk
　　　– Yes. It’s ____ Hangzhou.
A. made of; made of B. made of; made in C. made in; made of
A
B
谢谢
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