Unit 4 Global warming

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Unit 4 Global warming http//www.yangzheng.com.c
n/blog/ ???? ?globalwarming Or
http//www.yangzheng.com.cn/blog/user1/globalwar
ming/
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• What are the things that use energy in our
  classroom?
• What are the sources of energy that you know?
• What is a greenhouse?

• Finish the True or False Exercise.
• 2. Finish the online test.Class test name
  test
• 3. Finish the online discussion.

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Burning of fossil fuels like coal, natural gas
and oil
Greenhouse gases
The increase in the earths temperature
Greenhouse effect
Future global warming would cause the sea level
to rise, severe storms, droughts, famines, the
spread of diseases and the destruction of species.
Global warming are just speculation. Any warming
will be mild with few bad environmental
consequences
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T or F
1. The temperature last century didnt increase
much.2. Everyone believes that global warming is
caused by the activities of humans.3. Natural
gas is a greenhouse gas. 4. Carbon dioxide is a
byproduct of burning fossil fuels.5. Flooding
could be one of the effects of future global
warming. 6. It is clear what the effects of
global warming will be.
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Compare to Come out Quantities of Result
in Consequence Range Build up Keep on It
is(was)that(who) There is no doubt
Online Test
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1. There is little doubt he will fulfill
his promise. A. as for B. that C.
whether D. why KEY B
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2. It was not until my high school time____I had
such a chance to study in western countries. A.
which B. when C. that D. in which KEY
C
?It was not until my high school time that I had
such a chance to study in western countries. ?Not
until my high school time I had such a chance to
study in western countries. ?I didnt have such a
chance to study in western countries until my
high school time.
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3. Our coal output has increased by three times,
________ with last year. A. comparing B.
compared C. compare
D. having compared KEY B
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4. _____ food is kept in his new cave. A. Large
quantities of B. A great deal of C. A
large number of D. Quite a few. KEY B
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5. Eating too much fat can ________ heart disease
and cause high blood pressure. A. result from
B. contribute to C. attend to
D. devote to Key B
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6. --- Have you ______ some new ideas? ---
Yeah. Ill tell you later. A. come about
B. come into C. come up with
D. come out with Key C
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Group Discussion Just imagine you are a member of
Earth Care Organization, discuss about what we
should do to save energy. Do the presentation
after your discussion
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1.Turn off the tap when you are cleaning your
teeth. 2. Recycle paper and glass. 3. Walk or
cycle everywhere. 4. Turn off the lights when
your are not in the room. 5. Get something
repaired rather than buy a new one. 6. Use both
sides of a sheet of paper. 7. Try not to use
one-time-use box/cup/chopsticks. 8. Take a bag
with you when you go shopping. 9. Use
rechargeable batteries. 10. Use products that
save energy. 11. Let the air-condition remain 26
?.
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• Design a poster (Group work)
• Requirement
• Draw a picture with texts in English to describe
  the picture
• Show the importance of saving energy and
  protecting the environment
• Make sure there is a clear division of labor
  (????)in group members.

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Water has no taste at all. Water has no color.
Water is everywhere around us. Water is
in the rain. In the stream. In the pond.
And in the river. And in the sea again.
There isnt much water on the earth. we must to
save it. It is not inexhaustible. It is very
valuable.
In some states of America, in order to decrease
air pollution, save energy and reduce traffic
jams, state governments encourage people to take
buses to work or to share a car among several
people. They even set special "diamond lanes" in
some main streets, which are only for the
vehicles with 2 or more people.