教案1 Unit 4 Global warming
Warming up & Listening
Teaching goals
Enable the students to know something about energy resources and something that use energy, and listen for details and catch the specific information as much as possible.
Learning ability goals
Enable the students to predict some important information in the process of listening and encourage the students to talk about the situations according to the listening materials.
Teaching important and difficult points
How to make sure the answers of listening material.
Teaching aids
A recorder and cassette tapes, a projector, and a computer
Teaching procedures
Step 1 Warming up
Do you know any kind of energy resource?
Do you know anything that use energy?
things that use energy in a house
(Slide show: some pictures of things that use energy in a house.)
Things that use energy
Sources of energy
 lights
television
cassette player
computer
fridge
stove
washing machine
hairdryer
video recorder
coal oil
natural gas
wind(power)
sun(solar energy)
water(hydro-electric power)
the sea ( tidal energy)
uranium(nuclear energy)
plant waster(biomass energy)
T: Now let’s look at some more pictures and decide whether they are renewable or
not.
(Slide show: pictures of some forms of energy)
wind energy renewable
solar energy renewable
hydroelectric power renewable
geothermal energy renewable
tidal energy renewable
biomass energy renewable
nuclear power plant, non-renewable (picture)
an oil refinery(精炼厂), non-renewable (picture)
coal power station, non-renewable (picture)
natural gas non-renewable (picture)
uranium Ore (铀矿石) non-renewable (picture)
The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿）, pictured above. (picture)
Conclusion
non-renewable
coal oil natural gas Uranium fossil fuels
renewable
wind (wind power) sun (solar energy) water (hydro-electric power)
plant waste (biomass energy) hot springs or geysers (geothermal energy)
the sea (tidal energy)
Slide show
What are fossil fuels?
Ancient animal and plant material below the surface of the earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy.
Also known as non-renewable energy because once they are used they have gone
forever; they cannot be renewed.
Step 2 Pre-listening
Read Exercise 1 together:
1. Read the statements below and tick the ones you agree with.
2. Listen to the tape and answer and decide which statement Professor Chen does
NOT agree with.
1. We'll have to stop using fossil fuels.
2. About 90% of the world's energy comes from fossil fuels.
3. We can replacefossil fuels with renewable sources of energy.
4. Nuclear power is a good source of energy.
5. In the future, we'll need new technologies to replacefossil fuels.
6. It's the developed countries who are to blame for producing most of the carbon
dioxide.
3. Listen again and tick the phrases that Professor Chen uses to agree or disagree
with Li Bin.
Slide show
Exactly. I’m afraid I disagree with you.
That’s true. I’m afraid not.
That’s right. I don’t think so.
That’s correct. No way.
I agree. I don’t agree.
4. Listen for the third time and fill in the blanks.
1．Our modern _________ societies depend on the energy we get from_________.
2．It’s a very ____________ and cheap form of energy.
3．Can’t we just ________ fossil fuels with ________ sources of energy like sun or wind power?
4．However, whatever we do, we have to do it as a ____________
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