高二英语选修6第4单元学案Word格式.doc
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高二英语选修6第4单元学案Word格式.doc
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Beforeclass(课前自主学习)
I.重点单词
1._________ v.消费;
消耗;
耗尽2._________ v.趋向;
易于;
照顾
3_________ n.大灾难;
浩劫4._________ adj.胡乱的;
任意的
5._________ v.反对;
反抗;
与(某人)较量6_________. n.洪水;
水灾
7._________ v.同意;
捐赠;
订阅8._________n.燃料
II.重点短语
eabout_________2.keepon_________
3.subscribeto_________ 4.beopposedto_________
5._________大量的6. ________即使_
7._________上升;
增长;
升起 8_________依靠,依赖
9_________温室效应10._________用光,耗尽
Inclass(课上合作探究)
Learningprocedures
Step1 Warmingup
1.Warmingupbyreadingandtalking:
Readthroughtheexercise.Putstudentsingroupstotalkaboutwhatweuseenergyfor,discusswhatarethesourcesoftheseenergyandwhetherthefollowingsourcesarerenewableornon-renewable.
________________________________________________________________
Thingsthatuseenergy
Sourcesofenergy
Renewable/non-renewable
lights
heating
television
cassetteplayer
videorecorder
computer
fridge
stove
hairdryer
...
coal
oil
naturalgas
windpower
solarenergy
nuclearenergy
hydro-electricpower
biomassenergy
geothermalenergy
tidalenergy
Step2 Pre-reading
1.Lookatthepictureofagreenhouseandaskstudentswhatagreenhouseismadeofandwhatitspurposeis.
2.Askstudentswhattheythink“greenhousegases”areandwhattheythinkgreenhousegasesdo.Lookatthepictureaboveandexplainittotheirpartners.
Step3 Readingandcomprehending
Task1.Skimming
Askstudentstoreadthepassagequicklysoastogetthekeywordsandgeneralideaofeachparagraphandanswerthefollowingquestions:
(1)Whatisthemaintopicofthearticle?
________________________________________________________________________
(2)Whowrotethemagazinearticle?
Whatisthenameofthemagazine?
(3)Whatarethenamesofthethreescientistsmentionedinthearticle?
Dotheyagreewithoneanother?
(4).Whatdotheythinkaboutglobalwarming?
Dotheyagreewithoneanother?
(5).Whatarethetwographsabout?
Task2.Scanning
Choosethebestanswerstoeachquestionaccordingtothetext
(1).Howmuchdidthetemperatureriseinthe1900s?
A.OnedegreeFahrenheit.B.OneCelsiusC.TwodegreesD.ThirtydegreeCelsius
(2).Whatcausesthetemperatureoftheearthtoincrease?
A.CuttingtreesB.Wastingthefarmland
C.RunningoutoftheriverwaterD.Burningfossilfuels
(3).Whoaccuratelymeasuredtheamountofcarbondioxideintheatmospherefrom1957to1997?
A.Dr.JaniceFoster.B.Fahrenheit.C.CharlesKeelingD.GeorgeHambley
(4).GeorgeHambleybelievesthatmorecarbondioxideisactually_____.
A.abadthingB.adangerousthing.C.acomparativethingD.apositivething
(5).Whatisthemainideaofthispassage?
A.Globalwarming.B.Floodphenomenon.C.Makingmethane.D.Makinggreenhouses
Task3.Carefulreading
Readthepassagecarefullyandjudgewhetherthestatementsaretrue(T)orfalse(F).
①JaniceFosterbelievesthatglobalwarmingiscausedbytheburningfossilfuels.( )
②Naturalgasisagreenhousegas.( )
③Carbondioxideisabyproductofburningfossilfuels.( )
④PeopleacceptCharlesKeeling'
sdatabecausehetookaccuratemeasurements.( )
⑤Floodingcouldbeoneoftheeffectsoffutureglobalwarming.( )
⑥GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.( )
⑦GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.( )
⑧Itisclearwhattheeffectsofglobalwarmingwillbe.( )
Task4.Structureanalyzing
Askstudentstoreadthetextcarefullyandtrytofindouthowmanypartstheycandividethetextintoandfindoutthemainideaofeachpart. Part
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