高中英语 Unit4《Global Warming》学案3 新人教版选修6

Unit 4 Global warming Warming up & ListeningLearning goalsEnable 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 goalsEnable 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.Learning important and difficult pointsHow to make sure the answers of listening material.Learning aidsA recorder and cassette tapes, a projector, and a computerLearning proceduresStep 1 Warming upDo 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 energySources of energylightstelevisioncassette playercomputerfridgestovewashing machinehairdryervideo recorder coal oilnatural gaswind(power)sun(solar energy)water(hydro-electric power)the sea ( tidal energy)uranium(nuclear energy)plant waster(biomass energy)T: Now lets look at some more pictures and decide whether they are renewable ornot.(Slide show: pictures of some forms of energy)wind energy renewablesolar energy renewablehydroelectric power renewablegeothermal energy renewabletidal energy renewablebiomass energy renewablenuclear 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)Conclusionnon-renewablecoal oil natural gas Uranium fossil fuelsrenewablewind (wind power) sun (solar energy) water (hydro-electric power)plant waste (biomass energy) hot springs or geysers (geothermal energy)the sea (tidal energy)Slide showWhat 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 goneforever; they cannot be renewed.Step 2 Pre-listeningRead 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 doesNOT agree with.1. Well have to stop using fossil fuels.2. About 90% of the worlds energy comes from fossil fuels.3. We can replace fossil fuels with renewable sources of energy.4. Nuclear power is a good source of energy.5. In the future, well need new technologies to replace fossil fuels.6. Its the developed countries who are to blame for producing most of the carbondioxide.3. Listen again and tick the phrases that Professor Chen uses to agree or disagreewith Li Bin.Slide showExactly. Im afraid I disagree with you.Thats true. Im afraid not.Thats right. I dont think so.Thats correct. No way.I agree. I dont agree.4. Listen for the third time and fill in the blanks.1 Our modern _ societies depend on the energy we get from_.2 Its a very _ and cheap form of energy.3 Cant 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 _.5 The _ countries are really the ones to _.Keys:1industrial; fossil