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

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