(共44张PPT)
Unit 3 The environment
Period 1 Reading I
牛津深圳版 九年级下册
Learning objectives
1. 掌握词汇：concern,lifeless, fuel, coal, result, increase, sea level, destroy, nature, surface, soil, flood, habit, proper, friendly, recycle, purpose...
2. 掌握课文的主要内容并理解文章的细节；
3. 能运用阅读技巧阅读文章。
4. 通过学习课文关注环境问题，加强环保意识。
Lead in
Watch the video and know about the greenhouse effect.
Lead in
Look and say:
atmosphere
[ tm sf (r)]
The spacecraft re-entered the atmosphere.
Lead in
temperature
[ tempr t (r)]
It’s hot today, and the thermometer recorded a temperature of 35 C.
Lead in
life
People found the moon was lifeless.
less
lifeless [ la fl s]
＋
Lead in
Coal is a kind of fuel, and people can burn it.
coal [k l]
[ fju l]
Lead in
sea
The melting ice caused a rise in sea level.
level
sea level
[ si levl]
＋
Lead in
If the soil is allowed to dry out the tree could die.
soil [k l]
Lead in
The flood was too deep to drive through.
flood [fl d]
Lead in
The waste things are baled, then sent for recycling.
recycle [ ri sa kl]
Lead in
concern n.
atmosphere n.
temperature n.
consumer n.
guess v.
green adj.
lifeless adj.
担心；忧虑
大气层
温度；气温
消费者
猜测
环境保护的；赞成环境保护的
无生命的；无生物生长的
New words
Lead in
fuel n.
coal n.
result n.
increase v.
sea level n.
destroy v.
nature n.
燃料
煤
结果
（使）增长；增多；增加
海平面
摧毁；毁灭
自然界；大自然
Lead in
surface n.
soil n.
flood n.
habit n.
proper adj.
friendly adj.
recycle v.
purpose n.
表面；表层
土壤
洪水；水灾
习惯
正确的；恰当的
无害的
回收利用
目的；用途
Lead in
recycle
surface
friendly
nature
destroy
habit
soil
proper
出现红色的字请大声读， 出现黑色字请小声读。
green
flood
concern
purpose
increase
sea level
consumer
fuel
result
coal
lifeless
guess
atmosphere
temperature
Pre-reading
What do you know about the greenhouse effect Match the first half of the sentences in column A with the second half in column B.
A
1 There is an atmosphere
2 It controls
3 However, we are polluting
4 The gases cause the atmosphere
5 The Earth is getting
6 We call this
B
a the greenhouse effect.
b the Earth with harmful gases.
c warmer and warmer
d to keep in too much heat from the Sun.
e around the Earth.
f the Earth’s temperature.
Pre-reading
Read the following sentences.
There is an atmosphere around the Earth.
It controls the Earth’s temperature.
However, we are polluting the Earth with harmful gases.
The gases cause the atmosphere to keep in too much heat from the Sun.
The Earth is getting warmer and warmer.
We call this the greenhouse effect.
Pre-reading
In groups, discuss this with your classmates.
What is the result of the greenhouse effect
Pre-reading
Look at the pictures, the title, the introduction and the sub-headings of the article on page 35. Then answer the questions below.
1. What is the article mainly about
2. What problems does the article discuss
3. A consumer is someone who buys and uses things. Can you guess what a “green consumer” is
Environmental problems.
The greenhouse effect, cutting down forests and bad habits.
A “green consumer” is someone who only buys and uses things friendly to the environment.
Reading task
The world is in danger
Our world is in danger. We must do something to protect the environment. But, what are the main problems we face
The greenhouse effect
The atmosphere around the Earth is necessary for all living things. It is like the glass of a greenhouse, letting sunlight in and keeping heat from getting out. Without it, the Earth would be the same as the Moon — cold and lifeless.
When we burn fuels such as petrol and coal, we produce a gas called carbon dioxide (CO2). Too much of this gas pollutes the atmosphere, and causes it to keep in too much heat. As a result of the greenhouse effect, the Earth’s temperature is increasing. This causes sea level to rise, and in the future may cause cities to disappear.
Listen and read the article.
Reading task
Cutting down forests
Every year, we destroy nature by cutting down huge areas of forests. This makes the greenhouse effect worse because trees take in CO2 and produce oxygen. Cutting down trees also destroys the homes of the animals that live in our forests, and causes the surface of the soil to be easily destroyed by rain. This can result in floods and even more damage to the environment.
Bad habits
Many of our habits cause pollution. People often use things once and then throw them away, or leave them on the ground as litter. This creates mountains of rubbish and pollutes our land and seas.
result in 造成；导致
Reading task
In order to protect the environment, we need to take proper action. We should be different from many consumers and become “green consumers”. This means that we should only buy and use products friendly to the environment. We should also recycle as many things as we can. We can reuse things for the same purpose as before, or we can use them for new purposes. If we just learn to live in new and different ways, we can make a difference.
take action 采取行动
make a difference 有作用；有影响
Reading task
1. The article is probably from a(n) ___________.
A. advertisement B. poster about the Earth Hour
C. comic book D. environmental science book
2. What is the article manily about
3. What problems does the article discuss
D
Read the article and finish the following questions.
Environmental problems.
The greenhouse effect, cutting down forests and bat habits.
Reading task
Part 1
Part 2
Part 3
Part 4
Match each picture with each part of the text.
Language points
1. The world is in danger.
世界正处于危险之中。
in danger：在危险中（______处于危险之中）
in danger of：有……的危险
danger _____ 危险
dangerous adj. _______（指本身对他人或事物造成危险）
自己
n.
危险的
Language points
eg. The patient’s life is still in danger.
这病人的生命还没脱离危险。
He is in danger of losing his life.
他有生命危险。
Broken glass is dangerous.
碎玻璃很危险。
中考真题：
根据汉语完成句子：
目前，大象面临巨大的危险。
So far, the elephants are ______ great _______ . (四川眉山)
in danger
Language points
2. As a result of the greenhouse effect, the Earth’s temperature is increasing.
由于温室效应，地球的温度正在升高。
as a result of：由于
（后接表示原因的_____或代词）
as a result：结果；因此
（后接表示结果的_____，一般用逗号隔开）
名词
句子
Language points
eg. The sports meeting was put off as a result of the heavy rain.
= It rained heavily. As a result, the sports meeting was put off.
由于大雨，运动会推迟了。
中考易错题：
选出可以替换划线部分的选项：
—— Why are you unhappy
—— I failed my exam as a result of my own carelessness.
A. under the name of B. ahead of C. because of
Language points
3. This creates mountains of rubbish and pollutes our land and seas.
这造成了堆积如山的垃圾，污染了我们的土地和海洋。
mountains of：________，可用来修饰可数名词和不可数名词
eg. Every day those cleaners carry away mountains of rubbish in the city.
每天那些清洁工人从城市中运走了堆积如山的垃圾。
大量的
Language points
mountains of 的近义短语：
a lot of／ lots of，后面接可数名词或不可数名词；
a large number of，后面接__________；
a great deal of，后面接____________。
中考易错题：
根据汉语完成句子：
除了大量的家庭作业之外，当今的学生还要忙于参加各种活动。
In addition to ___________ ________ homework, students today are busy with all kinds of activities.
可数名词
不可数名词
mountains of
Reading task
1 ____________ the flood, many people were left homeless. (because of the effect of)
2 The world population will continue to _________ for many years to come. (to become greater in number)
3 The mountain is high. It is 3,000 metres above _________. (the height of the ocean)
4 Man first walked on the _________ of the Moon in 1969. (the to part of an area of land)
5 There were ______________ toys in the shops during the Christmas holiday. ( a very large number of)
As a result of
increase
sea level
The words in italics explain the meanings of some words on page 35. Find these words to complete the sentences. Change their forms if necessary.
surface
mountains of
Reading task
Mark: The burning and cutting down of trees all over the world
__________ the loss of our forests.
Why do you think people do that
Jenny: The world’s population is growing
fast. That’s probably the main reason.
People need land to live on.
result in
Complete the conversation below with the words from the box. Change their forms if necessary.
in danger make a difference take action
increase result in
Reading task
Mark: I suppose so. But forests are important to us. Trees take in CO2.
When so many trees are being cut down, the CO2 in the Earth’s
atmosphere ____________. This causes the temperature to rise
and puts the world __________.
Jenny: To _________________, we need to stop cutting down so many
trees, and we should use as few wood products as possible.
Mark: You’re right. Everyone should ___________ to protect the Earth.
is increasing
in danger
make a difference
take actions
in danger make a difference take action
increase result in
Discuss
In groups, discuss the following questions.
In order to save ourselves, we should solve the problem of the plastic bottles and plastic bags. What should we do
Exercise
1. —— If people keep throwing rubbish into this river, all the living things in it will become lifeless.
——Exactly right. People should make the river clean.
A. dead B. dirty C. lively
2. ——Are you busy every day
——Yes, I am. There is mountains of work to do so that I feel very tired after work.
A. lots of B. a little C. some
Choose the correct answer so that it has the same meaning as the underlined word.
Exercise
3. —— Why did the car accident happen
——I heard that it happened as a result of the driver’s carelessness (粗心).
A. ahead of B. because of C. in addition to
4. —— Compared with the past, the rain in this area has increased.
——Yes. And the trees are growing well.
A. become more B. become less C. become higher
5. —— I’m glad to hear that Lily has agreed to join our drama group.
——That’s right. She will act as the stepmother.
A. promise B. make C. be
Exercise
1.——新老师总是鼓励小汤姆。
——这对他影响很大。
——The new teacher always encourages little Tom.
——This has ______ ______ ______ ____-____ ______ ______.
2.让我们行动起来，建设天蓝、地绿、水清的美丽新中国。
Let’s ________ ________ to create a beautiful new China where the sky is blue, the land is green, and the water is clear.
Finish the following sentences:
made a big difference to him
take action
Exercise
3.目前，大名面临巨大的危险。
So far, the elephants are ________ great ________.
4.是他的懒惰导致了这次期中考试的失败。
His laziness ________ ________ his failure in the mid-term exam.
5.他们的房屋被洪水摧毁了。
Their houses ________ ________ by the floods.
in danger
resulted in
were destroyed
Summary
Key words:
concern, lifeless, fuel, coal, result, increase, sea level, destroy, nature, surface, soil, flood, habit, proper, friendly, recycle, purpose
Key phrases:
in dange, as a result of, result in, mountains of, take action, make a difference
Summary
Key sentences:
The world is in danger.
As a result of the greenhouse effect, the Earth’s temperature is increasing.
This creates mountains of rubbish and pollutes our land and seas.
Blackboard design
Unit 3 The environment
Period 1 Reading I
in dange as a result of
result in mountains of
take action make a difference
Homework
1. Copy the key words and phrases.
2. Discuss the following question with your classmates: How do we protect our environment
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