资源简介

(共45张PPT)
Unit 2 Topic 3
What can we do at home to protect the environment
Section C
New Words
power
acid rain
nuclear
renewable
electric
efficient
电力；
动力；力
酸雨
原子核的，
原子能的；
核动力的
可更新的
电动的，
用电的
效率高的；
有能力的
electricity
gasoline
In many countries, people produce power from coal.
What is the disadvantages of using coal
It is very dirty and causes acid rain.
Nuclear power is clean.
But it is very dangerous.
Some countries use nuclear energy to
produce power.
Neither of the ways is perfect.
1b Read 1a and match the words with the pictures on Page 48.
A. acid rain B. nuclear energy C. biogas
A
C
B
1a Read and understand.
paragraph 2
paragraph 3
Paragraph 4
an electric vehicle
maglev train
biogas
n.技术
China is one of the first countries in the world to use biogas technology .
Farmers recycle straw, grass and animal waste to make biogas.
This renewable energy is used in people’s everyday lives.
1C
Fill out the following table.
Item Advantage Disadvantage
biogas
electric vehicle
maglev train
renewable
long process and high cost for its building
It’s a new kind of electric vehicle called “Yezi”.
It was shown in the 2010 Shanghai World Expo.
1C
Fill out the following table.
Item Advantage Disadvantage
biogas
electric vehicle
maglev train
renewable
long process and high cost for its building
save energy,
no pollution
too small to hold many people
In China, the best-known maglev train is
the German-built one in Shanghai.
a maglev train
It takes people just 7 minutes to go to the airport 30 km away.
The train can reach a top speed of 431 km per hour.
1C
Fill out the following table.
Item Advantage Disadvantage
biogas
electric vehicle
maglev train
renewable
long process and high cost for its building
save energy,
no pollution
too small to hold many people
quiet, quick, energy-efficient, no pollution
much more expensive than traditional steel railways
In many countries, people produce power
from coal, but it is very dirty and causes acid
rain. Some countries use nuclear energy to
produce power. However, nuclear power can
be very dangerous. To solve the energy problem, people all over the world are looking for new ways to produce power.
1. energy Vs power
(1)energy 能源、能量、精力
adj. energetic
他总是精力充沛。
He is always full of energy.
He is energetic.
我们应该在各方面节约能源。
We ought to save energy in many ways.
1. energy Vs power
(2) power 力量、动力、权力
adj. powerful
过去人们依赖水能和风能。
People used to depend on water and wind power.
对不起，你所拨打的电话已关机。
Sorry, the subscriber you dail is power off.
我们的祖国日益强大。
Our motherland is becomging more and more powerful.
China is one of the first countries in the
world to use biogas technology. Farmers recycle
straw, grass and animal waste to make biogas. This renewable energy is used in people’s everyday lives. Its key disadvantage is that the process requires a long time (up to 30days) and the cost is high.
2. key n.
(1)门的钥匙
(2)练习的答案
(3)按键
A piano has black and white keys.
the key to the door
the keys to the exercises
键盘 keyboard
3. process
(1)n.步骤，过程
改革教育将是一个困难的过程。
It will be a difficult process to reform the education.
(2) v.加工，处理
这些奶酪在这里加工。
The cheese is processed here.
China is one of the first countries in the
world to use biogas technology. Farmers recycle
straw, grass and animal waste to make biogas. This renewable energy is used in people’s everyday lives. Its key disadvantage is that the process requires a long time (up to 30days) and the cost is high.
4. require
(1) require sth.
这些宠物需要悉心的照顾。
The pets require lots of care.
(2)require (doing) sth.
地板该洗了。
The floor requires _______ .
(3) require sb. to do sth.
be required to do sth.
学生必须按规定穿校服。
We require the students to wear school uniforms.
Students are required to wear school uniforms.
washing
Electric vehicles were developed in the 1990s. On April 11, 2010, a new kind of electric vehicle named “Yezi” was shown in the 2010 Shanghai World Expo. It produces electricity from the sun, the wind and CO2. It can not only protect the environment but also save energy. It’s too small to hold many people, but larger models will be developed in the near future.
( ) 1. Electric vehicles have been developed since last century.
( )2. “Yezi” can hold many people.
T
F
In China, the best-known maglev train is
the German-built one in Shanghai. It takes
people just 7 minutes to go to the airport 30km away. The train can reach a top speed of 431 km per hour. It is quiet and quick. There is no wheel noise, because there are no wheels. Maglev trains are very energy-efficient and do not pollute the air.
However, maglev guide paths are much more expensive than traditional steel railways.
In China, the best-known maglev train is
the German-built one in Shanghai. It takes
people just 7 minutes to go to the airport 30km away. The train can reach a top speed of 431 km per hour. It is quiet and quick. There is no wheel noise, because there are no wheels. Maglev trains are very energy-efficient and do not pollute the air.
However, maglev guide paths are much more expensive than traditional steel railways.
electricity
How do people produce electricity
produce electricity by wind
use sunlight for producing electricity
use sea waves to produce electricity
sea waves
use hot water or steam from deep in the earth to produce electricity and heat for factories, schools and homes.
hot water
steam
Wind can produce electricity in many places.
People use sunlight to produce electricity.
Sea waves are used for producing electricity.
People use hot water or steam from deep in the earth to produce electricity and heat for factories, schools and homes.
2a Read the passage and match.
2
4
1
3
The
________,_______, ______ and ________ ________________ are energy sources.
The sun
wind
waves
heat from
deep in the earth
1. What’s the advantage of them
They will never run out.
They are renewable.
2. Has it been widely used now
The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year.
6. wave
（1）n. 挥手；招手；海浪
海浪被用来发电。
Sea waves are used for producing electricity.
（2）v. 招手，摆手
他挥了挥手，向我们道别。
He ______________ and ______________us.
waved his hand
said goodbye to
The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year.
7. deep
(1)adj. 深的，厚的
对这项技术很感兴趣。
He has a deep interest in the technology.
(2)adv.深深地， 在深处，常用于表空间上的深度
我们必须再挖深一些才能找到泉水。
We must dig deeper to find the spring.
deeply adv. 常用于表感情上的深度
The movie moved us deeply.
His lies hurt us deeply.
8. run out 用完，耗尽
纸巾已经用完了。
The paper towels have run out.
他们已经想不出任何办法了
They have run out of ideas.
The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year.
2a Read the passage and match.
This bottle is made of _________（塑料）.
Science _________ （技术）is important in our daily life.
The left ______/wi:l/ was broken so that the car couldn’t
run.
4. The traditional _____/st:l/ railways are much cheaper.
5. --Would you please give me a paper _____/ta l/ --Sure.
The manager ______（提供） him a chance to succeed.
7. They wished us a pleasant _________/'d :(r)n /.
8. After a long talk, she_______ (nod) her head finally.
9.If he wants to go, he should get my___________ (agree).
10.When they met each other, they______ (shake) hands.
plastic
technology
wheel
steel
towel
offered
journey
nodded
agreement
shook
11.Most of the ________(battery) can not be recycled.
12.I don’t like using _________(electricity) tooth brushes.
13. These________ are made of soft ________.(clothing)
14. We produce electricity from the _________ (move) of
water.
15. 李老师经常鼓励学生积极参加户外活动。
Miss Li often __________the students ___ _____ an ______
_____ ___outdoor _________.
16. 你这么做真是太聪明了。
It’s very smart ____ you ___ _____ so.
batteries
electric
clothes
cloth
movement
encourages
to take
active
part in
activities
of
to do
17.对他来说有必要马上做完这项任务。
It’s __________ ____ him ___ _________ this task at once.
19. 说得容易做得难。
______________________________________________
20. 事实胜于雄辩。
______________________________________________
21.你应该注意一下你粗鲁的行为。
You _____ ___ pay more _________ __ your _____ _______.
necessary for to finish
Easier said than done.
Actions speak louder than words.
ought to attention to rude
behavior
22. 你得确保走之前把灯给关了。
You have to ______ ______ you _____ ____ the lights before ________.
23. 什么是可再生能源？
What’s _____________ __________
24. 他们都期待着涨工资。
They are all_______ _______ ____ an __________ ___ pay.
25. We ought to reduce using paper cups.（一般疑问）
_______ _____ ___reduce using paper cup
26. coal, burning, instead, they, cook, to, use, biogas, of .
________________________________________________
make sure turn off
leaving
renewable energy
looking forward to increase in
Ought you to
They use biogas instead of burning coal to cook.

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