Unit4Globalwarming教师.docx
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Unit4Globalwarming教师
高二年级英语学科导学案
选修六Unit4Globalwarming
【教总73】第一课时
Vocabulary
Teachingaims:
Learnthenewwordsandexpressions.
Teachingimportantpoints:
Thepronunciationandtheuseofthewords.
Teachingdifficultpoints:
Theusageofthefollowingwords
(1)onthewhole
(2)average
Step1Readthenewwordsaloud.
Step2Wordstudy
1onthewhole大体上;基本上
1)Onthewholethewarmingoftheearthisaphenomenonthatcausesgreatconcern.总的来说,地球变暖是个引起广泛关注的现象。
2)OnthewholeIaminfavoroftheplan.总的来说,我赞成这个计划。
完成句子
1)Hisbusiness___________________wassuccessful.总的来说,他的事业是成功的。
2)________________________ourtasksweregoingonsmoothly.总的来说,我们的任务进展得很顺利。
(onthewhole,onthewhole)
2average1)adj.平均的,普通的
Thegreenhouseeffectgivestheearth’ssurfacetheaveragetemperatureof15C
温室效应使得地球表面的平均气温保持在摄氏15度。
2)n.平均,平均数
above/below(the)average;在平均水平以上/以下
on(the)average;平均地一般地
upto(the)average达到平均
完成句子
1)whatis__________rainfallforJuly?
2)_______________mensmokemorecigarettesthanwomen.
3)Tomisagoodstudentandhisworkatschoolis____________________________________.
(average,onaverage,abovetheaverage)
Step3Homework
翻译下列单词或短语
1.发生,造成2.同意,赞成,订购
3大量的4.趋向,易于,照顾
5.导致6.上升,增长,升起
7.反对8.陈述,声明
9.种类,范围10.即使
11.继续12.平稳的,持续的
13.倾向,趋势14.分布广的,普遍的
答案:
eabout2.subscribeto3.quantitiesof4.tendto5.resultin6.goup7.beopposedto8.state9.range10.evenif11.keepon12.steady13.trend/tendency14.widespread
【教总74】第二课时
(Reading)
Teachingaims:
1.Enablethestudentstotalkaboutthecausesandeffectsofglobalwarming.
2.Helpthestudentslearnhowtotalkaboutthecausesandeffectsofglobalwarmingandexpressideasaboutwhatpeopleshoulddoaboutit.
Teachingimportantpoints
Helpthestudentslearnhowtodebateoverthetopic“Weshoulddonothing/somethingaboutglobalwarming.”
Teachingdifficultpoints
Enablethestudentstolearnthewritingskillsofthetextandgetabetterunderstandingofarticlesofthiskind.
Teachingmethods
Readingandgroupwork.
Teachingprocedure
Step1Revision
Readthenewwordsaloud
Step2FastReading
Scanthetextandanswerthefollowingquestions.
(1)Whowrotethemagazinearticle?
Whatisthenameofthemagazine?
(SophieArmstrong;EarthCare)
(2)Whatarethenamesofthethreescientistsmentionedinthearticle?
(JaniceFoster,CharlesKeeling,GeorgeHambley)
Step3CarefulReading
Readthetextcarefullyandchoosethebestansweraccordingtothetext.
1.Whatisthepurposeofthefirstparagraph?
A.Tointroducethetopic.B.Togiveopinion.
C.Toaskthereadersaquestion.D.Togivedata.
2.Whostudiedtheamountofcarbondioxideintheatmospherebetween1957and1977?
A.DrJaniceFosterB.CharlesKeeling
C.GeorgeHambleyD.SophieArmstrong
3Whatmayhappenifwedonothingaboutglobalwarming?
A.Theremaybeariseofthesealevel.B.Thetemperaturewillbesurelylower.
C.The“greenhouseeffectwilldisappear.D.Ithasnothingtodowithus.
4.WhydoesGeorgeHambleystatethatmorecarbondioxideisactuallyapositivething?
A.Itwillmakeplantsgrowfaster.B.Cropswillproducemore.
C.Itwillencourageagreaterrangeofanimals.D.Alloftheabove.
5.Whatisthepurposeofthelastparagraph?
A.Tomakereadersdisappointedwiththeproblem.
B.Tomakereadersthinkabouttheproblem.
C.Toshowthewriter’sopinionontheproblem.
D.Tobeginsomediscussionaboutthefuture.
(答案ABADB)
Step4Summary
Fillintheblanksaccordingtothetext.
Thereisno1__________thattheearthisbecomingwarmernomatterwhetheritisanatural2__________.
Scientistsbelievethatgreenhouseeffectbeginswhenweaddhuge3______________extracarbondioxideintotheatmospherebyburning4______________.Theincreasedamountofcarbondioxideiscausingtheglobaltemperatureto5___________.
Scientistsalsoagreethattheburningofmoreandmorefossilfuelsthatresultedinthisincreaseincarbondioxide.Ontheotherhand,DrFosterthinksthatanincreaseoffivedegreeswouldbea6_____________.Scientistscannotpredicttheclimatewellenoughtoknowwhattoexpect.
Ontheotherhand.ascientistGeorgeHambleypredictsthatanywarmingwillbemildwithfewbadenvironmental7__________He8___________thatmorecarbondioxidewillencourageagreater9____________ofanimals.
However,greenhousegasescontinueto10______________intheatmosphereandtheclimateisgoingtokeeponwarming.
(答案1.doubt2phenomenon3quantitiesof4fuels5goup6catastrophe
7consequences8states9range10buildup)
Step5Homework
Readthetextagainandagainandtrytoretellthestoryusingyourownwords.
【教总75】第三课时
(LanguagePoints)
Teachingaims:
HelptheSsunderstandthetextbetter.
Teachingimportantpoint:
Mastertheusageoftheusefulwords
(1)comeabout
(2)Thereisnodoubtthat(3)random(4)subscribe(5)quantitiesof
Teachingdifficultpoint:
HelptheSstoanalyzethelongsentences
Teachingprocedures:
Step1Revision
Readthenewwordsaloud.
Step2Languagestudy
1.comeabout发生;造成,强调结果,常用于固定句式Howdid/doesitcomeaboutthat…?
…怎么会呢?
1)Howdidtheaccidentcomeabout?
事故是怎样发生的?
2)Howdiditcomeaboutthatheknewwherewewere?
他怎么会知道我们在什么地方的呢?
2.Thereisnodoubtthat…为固定句式,后接从句时用that引导,后接名词时用介词about.
1)Thereisnodoubtthathewillfail.毫无疑问他会失败的。
2)Thereisnodoubtabouthiskindness.毫无疑问他是善意的。
3.randomadj.胡乱的;任意的
arandomphenomenon一种任意现象
atrandomadv.随意地;无目的地
Pleasechooseanumberatrandom.请随便选一个号码。
4.subscribetosth.同意;赞成;订阅;捐赠
1)Ihavesubscribedtoseveralmagazinesrecently.最近我订了几份杂志。
2)Doyousubscribetoheridea?
你同意她的想法吗?
3)Hesubscribedamillionyuantotheschool.他捐助了100万元给这所学校。
5.aquantityof=quantitiesof大量的;许多的,后接可数名词或不可数名词,但要注意aquantityof短语作主语时,其谓语动词的形式取决于其后的名词,而quantitiesof短语作主语时,谓语动词一律用复数。
Inquantity=inlargequantities大批地;大量地
1)Aquantityofbooksareonthedesk.在桌上有很多书。
2)Aquantityofbeerisconsumedinsummer.夏天消费了大量的啤酒。
3)Quantitiesofwaterarewastedinourdailylife.在我们的日常生活中,大量的水被浪费。
4)Itischeaptobuygoodsinlargequantities.大批买东西是便宜的。
Step3Homework
翻译下列句子。
1.当跟其他的自然变化相比,这是一个迅速的增加。
2.你能告诉我这个事故是怎样发生的吗?
3.毫无疑问,地球是在变暖,而地球变暖正是人类活动导致而成的,并非是一种随意的自然现象。
4.所有的科学家都赞同这种观点:
人们为了生产能量而燃烧化石燃料,从而引起了地球温度的升高。
5.当我们在大气层中增加了大量额外的二氧化碳时,问题就来了。
【教总76】第四课时
(languagepoints)
Teachingaims:
HelptheSsunderstandthetextbetter.
Teachingimportantpoint:
Mastertheusageoftheusefulwords
(1)tend
(2)goup(3)resultin(4)oppose(5)consequence(6)state
Teachingdifficultpoint:
HelptheSstoanalyzethelongsentences.
Teachingprocedures:
Step1Revision
1)Checkoutthehomework.
2)Revisetheusefulwordslearntinthelastperiod.
Step2languagestudy
1.Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingthetemperaturetogoup.
a.causingthetemperaturetogoup.为现在分词短语作结果状语。
①Thecupfellontothefloor,breakingintopieces.
②Hisparentsdiedintheaccident,leavinghimanorphan.
b.tend趋向;易于;照顾
①tendtodosth.易于做某事
Shetendstogetangryeasily.她易于生气。
②tendto/towardssth.有-----的倾向
Hisviewstendtotheextreme.他的观点趋于偏激。
③tend(to)sb.照顾某人
Mumwasbusytending(to)mysisters.妈妈忙于照顾我的妹妹们。
④tendencyn.倾向;趋势
c.goup上升;增长;升起,反义词godown
①Thepricehasgoneup.价格上涨了。
②Thesunisgoingupslowlyinthemorning.早上,太阳冉冉升起。
2.resultin=leadto导致,宾语为结果
resultfrom由-----引起的,宾语为原因
Oureffortsresultinsuccess.=Successresultsfromourefforts.
Theaccidentresultedintwodeaths.=Twodeathsresultedfromtheaccident
3.oppose反对;反抗;与某人较量
opposesth/doingsth.
Iopposeyouropinion.我反对你的观点
Tobehonest,Iopposeyourgoingtherealone.老实说,我反对你单独去那儿。
opposesb.
Whoisopposingyouinthematch.谁和你比赛。
opposedadj.
beopposedtosth/doingsth(to为介词)
Iamstronglyopposedtohelpingtheyoungman.我强烈反对帮助那个年轻人。
4.consequencen.结果;后果;影响
①asaconsequence=inconsequence=asaresult结果,
②asaconsequenceof=inconsequenceof=asaresultof由于;因为…缘故
③beofmuch/little/noconsequence很重要/几乎不重要/不重要
④answerfortheconsequence对后果负责
⑤taketheconsequenceof承担责任
5.state①v.陈述;声明statesth/statethat
Shestatedheropiniontous.她向我们声明了她的意见。
Hestatedthatthestorywastrue.他声明这个故事是真实的。
②n.状况;情况;国家
Inabadstate.状况不好
Inagoodstate.状况良好
Step3Homework
完成练习册导学案2-3
【教总77】第五课时
(Languagepoints)
Teachingaims:
HelptheSsunderstandthetextbetter.
Teachingimportantpoint:
Mastertheusageoftheusefulwords
(1)range
(2)evenif(3)keepon(4)glance(5)steady
Teachingdifficultpoint:
HelptheSstoanalyzethelongsentences.
Teachingprocedures:
Step1Revision
(1)Checkoutthehomework.
(2)Revisetheusefulwordslearntinthelastperiod.
Step2languagestudy
1range
(1)n.(气温价格等的)幅度;(知识,知觉,听觉等的)范围;(枪,导弹等的)射程
bein/withrange;在---的范围之内
bebeyond/outofrange超出-----的范围
①Thestudenthasaverywiderangeofinterest.那个学生兴趣广泛。
②Thisisbeyondmyrangeofknowledge.这超出了我的知识范围。
③Thisgunhasarangeof300meters.这支枪的射程是300米。
(2)vi.变化范围rangefrom…to/rangebetween…and…在…到…的范围内变化
①Theiragesrangefrom25to50.他们的年龄在25岁到50岁。
②Thepricesrangebetween100dollarsand120dillars价格在100美元到120美元之间。
2.evenif=eventhough即使;尽管(引导让步状语从句)
①Evenifitrains,hewillcomeontime.即使下雨,他还会准时来。
②Hewouldnotgiveinevenifhefailed.即使失败,他也不放弃。
3.keepon继续
keepondoingsth继续做某事
①Thoughitwasraining,wekeptonworkinginthefield.尽管在下雨,我们继续在地里干活。
②Hekeptontalkingaf