山东省沂水一中高二英语 Unit 4 the first period课件(25) 新人教

1、 Unit 4 Global warming2021/8/8 星期日1Unit 4The first period2021/8/8 星期日2 Teaching methods situational teaching method ; cooperative learning method; programmed teaching method; task-based and assessment teaching methods.2021/8/8 星期日3Teaching aims and demands一、topic: Global warming; pollution; the impo

2、rtance of protecting the earth二、vocabulary三、functions: Agreement and disagreementBlame and complaint四、grammar : The use of it2021/8/8 星期日4Arrangement of teachingthe first period: warming upthe second period: language points of readingthe third period : readingthe fourth period : learning about langu

3、age and language points of using languagethe fifth period: using languagethe sixth period: grammarthe seventh period: exercises 2021/8/8 星期日51. Check up Daily Exercises2021/8/8 星期日6energy sourcesWe depend on energy to do many things in our daily lives. For example, energy lights our cities and heats

4、 our buildings. Make a list of things that use energy in your home, in your school, or any other places you can think of. 2021/8/8 星期日7stove light things that use energy in your home micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stove2021/8

5、/8 星期日8Wind energy is used as power to produce electricity . Windmills2021/8/8 星期日9where electricity is produced by burning coals.The coal power stations2021/8/8 星期日10in which oil is refined and made pure. The Oil Refineries2021/8/8 星期日11a facility designed to convert nuclear energy into electricity

6、.A nuclear power plant2021/8/8 星期日12 on the roof of a house on a bright sunny day are used to collect solar energy, making your house warm or heating your water.Solar panels2021/8/8 星期日13are used to keep back water and raise its level for irrigation or for producing electricity, etc.The Hydro-electr

7、ic dams2021/8/8 星期日14Guess it! Uranium Ore (铀矿石) The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿）, pictured here.2021/8/8 星期日15What source of energy?Geysers(间歇泉)2021/8/8 星期日16Geothermal (地热的) Energy Plant2021/8/8 星期日17 An energy source is “re

8、newable” when supplies of it never run out and “non-renewable” when one day they will run out. Which energy sources on your list are renewable and which are non-renewable? Discuss2021/8/8 星期日18Things that use energy in your homeSources of energyRenewable/non-renewablelightheatingtelevisioncassette p

9、layervideo playercomputerfridgestovewashing machinehairdryercoaloilnatural gaswind (wind power)sun (solar energy)uranium (nuclear energy)water (hydro-electric power)plant waste (biomass energy)hot spring or geysers (geothermal energy)the sea (tidal energy)non-renewablenon-renewablenon-renewablerenew

10、ablerenewablenon-renewablerenewablerenewablerenewablerenewable2021/8/8 星期日19What are these buildings made of and what is their purpose? They are made of glass and plants can grow in it when it is cold outside.2021/8/8 星期日20How does it work?The glass traps the heat from the sun, making the air warm so that plants can grow better.2021/8/8 星期日21Greenhouse gases!Whats greenhouse gases effect?Greenhouse gases perform the same function as the glass in a greenhouse - They trap the heat of t