人教版高中英語教案Unit Four Global Warming

UnitFourGlobalWarming

Globalwarming:thereasons

Arisingpopulationisoneofthemainreasonsthatthereisglobalwarming.Injusta

thirdofthetimethepopulationrosebymorethanfivetimeswhatitdidbefore.Itis

expectedthatthistrendinthechangingpopulationwillcontinueandcouldevenheighten.

Thegrowingpopulationrequiresincreasingamountsofenergy.Theseenergydemandsand

othersuppliesrequireproduction,whichalmostalwaysinvolvestheemissionof

greenhousegases.Themorethepopulationincreasesthemoregreenhousegasesthatare

producedandthegreatertheincreaseintemperature.

Theburningoffossilfuelsisoneofthemostinfamouscausesforglobalwarming.The

majorreasonforfossilfuelscontributingsomuchtoglobalwarmingisthereleaseof

carbonthatoccursduringthecombustionoffossilfuels.Whenfossilfuelsburn,they

releaselargeamountsofcarbonbywayofthereleaseofcarbondioxide.

Anothersourceofcarbondioxidecomesfromdeforestation（砍伐森林）.Inforests

thereisanenormousamountofcarbonthatisstoredinthetreesandotherplants.This

carbonisoutoftheatmospherebecausethetreesconsumethecarbonfromcarbondioxide.

Whenthesetreesarecutdown,theyarefrequentlyburned.Thisburningreleasesthe

carbondioxideintotheatmospherethatwasstoredinorganicmatter.

Anuncommonlyrecognizedsourceofglobalwarmingisfromtheagriculturalindustry.

Ricepaddiesareanexampleofacropthathasclimaticimpacts.Thericepaddiesemit

methanewhichisoneofthegreenhousegases.Fertilizersthatareusedforcropsemit

anothergreenhousegas,nitrousoxide.

Anotherfeedbackmechanismistheonethatiscausedbythevaporizationofwater.

Thewarmerthattheearthis,themorewatervaporizesfromtheoceanstoclouds.The

increasedamountofvapourintheatmospherewillaffecttheearth?stemperaturebutitis

notcompletelyknownhow.

Thisunitlooksatsomeoftheenvironmentalproblemsfacingtheworldtoday.

Althoughonlyafewissuesarecovered.Thereadingtextsdealwithglobalwarming,

savingenergy,andlittering.Itishopedthatstudentswillbecomemoreawareof

environmentalissuesthroughdoingthisunitanddevelopfurthertheirsenseof

responsibilitytowardstheenvironment.

Fossilfuel:Ancientanimalandplantmaterialbelowthesurfaceoftheearthwitha

highcarbondioxidecontent,suchascoal,oilandnaturalgas,whichcanbeburntto

produceenergy.Alsoknownasnon-renewableenergybecauseoncetheyareusedthey

havegoneforever,theycannotberenewed.

Thereadingpassageisintheformofanarticlefromanenvironmentalmagazinefor

youngpeople.Itisadiscussionandputsforwarddifferentpointsofviewabouttheeffect

ofincreasedcarbondioxideintheatmosphere,thecausesoftheearth'sincrease

temperatureandthepossibleeffects.Itposesquestionsandencouragesstudentstothink

abouttheissues.Therearegraphsthatillustratepointsandgiveevidence.

Vocabularyusefulphrases:graph,data,flood,tendency,contribution,state,random任

意的，nuclear,phenomenon,tend,subscribe捐贈，訂閱，簽署文件，quantity,trend,

consequence,circumstances環(huán)境,情況，advocate擁護，提倡，主張，outer,fuel,catastrophe

大災(zāi)難，浩劫，range,disagreement,,refresh,average,glance,casual,widespread,

consume,consumer,oppose,opposed,environmentalist,existence,growth,electrical,

commitment,commit,educator,educate,comeabout,subscribeto,quantitiesof,goup,

resultin,beopposedto,evenif,keepon,putupwith,solongas,onthewhole,andsoon,

onbehalfof.

Grammar:

It的用法（Theuseof"it"）

強調(diào)句型：Itbe+強調(diào)部分+that/who+其它部分

function：

1.Agreementanddisagreement

Exactly.You'reright.

Iagree.

That'scorrect/true/right.

I'mafraidIdisagreewithyou.

I'mafraidnot.

Idon'tthinkso.

Noway.

Idon'tagree.

Idoubt

2.Blameandcomplaint（責備與抱怨）：

I'msorrytobringthisup,but

I'msorrytohavetosaythis,but

Theyshould（not）havedoneit.

Theyaretoblame.

Perhaps/Maybetheyshould/shouldn'tdo...

Whydon'tyoudosomethingaboutit?

ThefirstperiodWarmingUp,Pre-reading,ReadingandComprehending

Knowledgeandskills:

1.Toknowthemeaningsofthefollowingnewwordsandphrases:consume,come

about,random（任意的）,phenomenon,subscribe（同意,捐贈，簽署文件），subscribeto（同

意，贊成，訂購），fuel,quantity,quantitiesof,tend,goup,per,data,resultin,trend,

catastrophe（大災(zāi)難,浩劫），flood,oppose,opposed（反對的）,beopposedto（反對）,

consequence（結(jié)果，后果），state,range,evenif,keepon,glance,steady,steadily.

2.Tolearnaboutsomefactsandviewsaboutglobalwarming.

3.Tolearnhowtheinformationisorganized.

4.Todevelopthestudents5readingabilitybyskimmingandscanningthepassage.

5.Todevelopthestudents9abilitybytalkingaboutglobalwarming.

Emotion,attitudeandvalue:

1.Tomakestudentsrealizetheharmofglobalwarmingandtheimportanceof

environmentalprotection.

2.Todevelopstudents'senseofcooperativelearning.

Teachingimportantanddifficultpoints:

1.Toenablethestudentstolearnaboutglobalwarmingandtodeveloptheirreading

ability.

2.Toenablethestudentstotalkaboutwhatweshoulddotopreventglobalwarming.

Step1Warmingup

1.Warmingupbyreadingandtalking:

Readthroughtheexercisewiththeclass.Putstudentsingroupstotalkaboutwhatwe

useenergyfor,whatarethesourcesoftheseenergyandwhetherthesourcesarerenewable

ornon-renewable.

(Thesixphotosare:windmills;acoalpowerstation;anrefinery;anuclearpowerplant;

solarpanels;ahydro-electricdam.)

2.Warmingupbydiscussion:

ThingsthatuseenergySourcesofenergyRenewable/non-renewable

Step2Pre-reading

1.Showapictureofagreenhousetostudentsandaskthemwhatagreenhouseismade

ofandwhatitspurposeis.

(It'smadeofglassandplantscangrowinitwhenit'scoldoutside.Theglasstrapsthe

heatfromthesun,makingtheairwarmsothatplantsgrowbetter.)

2.Askstudentswhattheythink"greenhousegases“areandwhattheythink

greenhousegasesdo.Lookatthepictureaboveandexplainittotheirpartners.

(Greenhousegasesperformthesamefunctionastheglassinaglasshouse.Theytrap

theheatofthesunandkeeptheairsurroundingtheearthwarm.Thisiscalledthe

greenhouseeffect.)

Step3Readingandcomprehending

1.Fastreading

Askstudentstoreadthepassagequicklysoastogetthekeywordsandgeneralideaof

eachparagraphandanswerthefollowingquestions:

1)Whatisthemainideaofthearticle?

2)Whowrotethemagazinearticle?Whatisthenameofthemagazine?

3)Whatarethenamesofthethreescientistsmentionedinthearticle?Dotheyagree

withoneanother?

2.Detailedreading

1)Readthepassagecarefullyandjudgewhetherthestatementsaretrueornot.

()JanicaFosterbelievesthatglobalwarmingiscausedbytheburningfossilfuels.

()Carbondioxideisabyproductofburningfuels.

()Naturalgasisagreenhousegas.

()PeopleacceptCharlesKeeling'sdatabecausehetookaccuratemeasurement.

()Floodingcouldbeoneoftheeffectsoffutureglobalwarming.

()GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobal

warming.

()GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.

()Itisclearwhattheeffectsofglobalwarmingwillbe.

3.Structureanalyzing

Askstudentstoreadthetextcarefullyandtrytofindouthowmanypartstheycan

dividethetextintoandfindoutthemainideaofeachpart.

PartMainidea

Part1(Paragraph)Tointroduceadebateovertheissueofglobal

warming.

Part2(Paragraph_____toToillustratehowglobalwarmingcomesabout.

_____)

Part3(Paragraph)Tolisttwodifferentattitudesamonsscientiststowards

globalwarming.

Part4(Paragraph)It'suptoreaderstothinkanddecidewhetherpeople

shoulddosomethingaboutglobalwarmingornot.

4根據(jù)課文內(nèi)容填空.

PhenomenonThetemperatureoftheearthroseaboutonedegreeFahrenheitduring

the20thcentury.

Itis____thathascausedtheincreaseintheearth?stemperature

throughtheburningoffossilfuelslikecoal,naturalgasandoilto

produceenergy.

Carbondioxide,methaneandwatervapourcan____heatfromthe

suntwarmtheearth.Theproblembeginswhenweaddhuge____

extraCarbondioxideintotheatmosphere.

TheCarbondioxideintheatmospherewentupfrom1957to1997.

theburningofmoreandmorefossilfuelshas___theincreasein

carbondioxide.

DifferentScientistswhoagreewithDrJaniceScientistswhoagreewith

____towardsFoster.GeorgeHambley

theincreaseinAnincreaseoffivedegreeswouldbeMorecarbondioxideis

carbondioxidea(n)_____.Theythinktheremaybeaactuallya(n)_____.Itcan

riseofthesealevel,or______severemakeplantsgrowfaster;

storms,floods,droughts,thespreadofcropswillproducemore.In

disease,andsoon.aword,allofthesewill

makehumanbeingslive

better.

ResultTheclimateoftheearthisgoingtokeeponwarming______we

begintoreducetheamountofgreenhousegases.

Step4Languagestudy

Dealingwithanylanguageproblemsifany(wordsorstudentsmightnotunderstand)

tohelpthemhaveabetterunderstandingofthetext.

Step5Listening,readingaloudandunderlining

Askstudentstoreadthetextaloudtothetapeandletthempayattentiontothe

pronunciationofeachwordandthepauseswithineachsentence.Tellthemtopickoutall

theusefulexpressionsorcollocationsfromthepassagewhilereadingandcopythemtothe

notebook.

graph,data,flood,tendency,contribution,state,random任意的,nuclear,phenomenon,

tend,subscribe捐贈，訂閱，簽署文件,quantity,trend,consequence,circumstances環(huán)境,

情況，advocate擁護，提倡，主張,outer,fuel,catastrophe大災(zāi)難，浩劫，range,

disagreement,,refresh,average,glance,casual,widespread,consume,consumer,oppose,

opposed,environmentalist,existence,growth,electrical,commitment,commit,educator,

educate,comeabout,subscribeto,quantitiesof,goup,resultin,beopposedto,evenif,

keepon,putupwith,solongas,onthewhole,andsoon,onbehalfof.

Step6Retelling

Askstudentstotalkaboutglobalwarmingintheirownwords.

Step7Homework

Learntheusefulwordsandexpressionsinthisunit.

TrytofindsomedataaboutglobalwarmingontheInternet,andshowyourclassinthe

nextperiodandtalkaboutthem.

Reflectionafterteaching:

Thesecondperiod:LanguageStudy

Theemphasisofthisperiodwillbeplacedontheimportantnewwords,phrasesand

expressions.

Knowledgeandskills:

1.Togetthestudentstolearntousethefollowingnewwordsandexpressions:tend,

range,subscribeto,goup,widespread,state,glance,steady,tendency,keepon,onthe

whole,quantityof,oppose,comeabout,resultin,evenif.

2.Togetthestudentstounderstandandusethefollowingimportantanduseful

sentencepatterns:

itisarapidincreasewhencomparedtoothernaturalchanges.

Thereisnodoubtthattheearthisbecomingwarmer

Teachingimportantanddifficultpoints:

1.Importantnewwordsandexpressions:

2.Importantandusefulsentencepatterns:

3.Somedifficultandlongsentencesinthetext.

Step1Revision

1.Checkthehomeworkexercises.

2.Asksomestudentstotalkaboutglobalwarming.

Step2ReadingandFinding

Getthestudentstoreadthecontentthoroughlyandfindoutalltheusefulnewwords

andexpressionsorcollocations.\

Step3Practiceforusefulwordsandexpressions

TurntoPage28.gothroughtheexercisesinDiscoveringusefulwordsandexpressions

withstudentsandmakesuretheyknowwhattodo.

Step4Languagestudy

1.consume:燒毀毀滅consuming:令人著迷的重要的consumer:消費者

makealistof歹清單

Imustmakealistofthingstobuy.

Thecarconsumesalotoffuel.

Sheconsumedmostofhertimeinreading.

Thesmallvillagewasconsumedwithflood.

Thefirequicklyconsumedthewoodenhut.大火很快吞噬了那所小木屋.

Consumersareencouragedtocomplainaboutfaultygoods.要鼓勵消費者對劣質(zhì)商

品投訴.

Buildingmodeltrainsishisconsumingpassion.制作模型火車是他廢寢忘食的愛好.

2.runout（=becomeusedup）:用盡沒有了（無被動形式），主語通常是金錢，時間,

食物等無生命的名詞.runoutof:須接賓語，主語只能是人，可用被動形式.

Theirgasisrunningout.（對）Theirgashasbeenrunout.（錯）

Hermoneyhasrunout.

Heisalwaysrunningoutofmoneybeforepayday.

3.increase:增加增長提高使增加

Crimeisontheincrease,犯罪率正在增加.

Thepopulationofthiscountryhasincreased.

Heincreasedthesizeofhiscompanyyearbyyear.

4.compareto:把…比作…compare...with把?…和?…進行比較

comparedto:比起.…來，與.…比較起來，

Atpresent,comparedto/withdevelopingcountries,developedcountrieshavemade

moregreenhousegases.

Generallyspeaking,comparedto/withboysgirlslearnEnglishwell.

Peopleoftencomparechildrentoflowers.

Pleasedon'tcompareChinawithTaiwan,becauseitisonlyoneprovinceofChina.

5.increaseby+倍數(shù)或百分數(shù)，表示“增加了?…倍或百分之幾”

increaseto+具體增長的數(shù)字,表示“增加到了.?…”

Therateofinflationincreasedby1.5%.

Thepopulationhasincreasedfrom1millionto1.5million.

6.comeabout:發(fā)生造成breakout:（戰(zhàn)爭火災(zāi)等）爆發(fā)，（瘟疫）突然發(fā)生happen:

發(fā)生，碰巧（指偶然性）takeplace:發(fā)生，常指經(jīng)過安排，按計劃.

TheyhadescapedtoEnglandshortlybeforethewarbrokeoutin1938.

Theychancedbestayingatthesamehotel.

GreatchangeshavetakenplaceinChinainrecent30years.

7.Thereis/wasnodoubtthat毫無疑問...

Isthereanydoubtthatthefactoryhaspouredquantitiesofpollutedwater?

ThereissomedoubtwhethertheUSAwillreallycontributetokeepingtheglobalfrom

warming.

Hewouldfailtheexamratherthancheatit.他寧可考試不及格也不愿意作弊.

8.random:任意的隨意的胡亂的，只用作定語.

Shemadearandomchoiceamongthebooks.

Thisisjustarandomsamplefromtheirproducts.

這僅僅是對他們的產(chǎn)品的一個隨機抽樣.

9.phenomenon:現(xiàn)象其復(fù)數(shù)形式是phenomena

Therainbowafterrainingisanaturalphenomenon.

Terrorismisaphenomenonofthe20thcentury.恐怖主義是20世紀的現(xiàn)象.

10.subscribeto:同意贊成訂購.

Mybosshassubscribedtomyopinion.

Theretiredteachersubscribestosomemagazineseveryday.

Moreandmorepeoplearerefusingtosubscribetopointofview.

越來越多的人不贊成他的觀點.

Pleasesubscribeyournametotheapplication.請在申請表上簽名.

H.dueto:應(yīng)歸于，欠款，由于，不用于句首.

Thewageduetohimwillbepaidtomorrow.欠他的工錢，明天付給他.

Mostoftheproblemswereduetohumanerror.

多數(shù)問題都是由于人為的錯誤造成的.

Hersuccessisduetoherparents'help.

12.quantitiesof/aquantityof:大量的

Thereisalargequantityofmilk.

Therearelargequantitiesofbooksinthelibrary.

Greatquantitiesoffarmer-workershavecrowdedintocitiestoseekjobs.

13.meantodosth.=plantodosth.meandoingsth.意味著，意指mean:吝嗇,

小氣

Missingthetrainmeanswaitingfortwomorehours.

Ididn'tmeantodiscussthisproblemagain.

Theredlightmeans"stop".

Shylockisverymeanwithhismoney.

14.goup:上升，增長（尤其指代價格或溫度）

Thepriceofoilisgoingup.

Housingpriceshaverisensurprisinglyrecently.

Thesunrisesintheeast.

15.resultin:導(dǎo)致,造成（結(jié)果）resultfrom:因…而導(dǎo)致（原因）asaresult:結(jié)果是

asaresultof:作為...的結(jié)果

TheearthquakeinYushuhasresultedinovertwothousanddeaths.

Joblossesresultedfromtheglobalcrisis.

Shehasworkedveryhard,asaresult,shehasbeenadmittedintoakeyuniversity.

Wefinishedtheworkontimeasaresultofyourhelp.

16.oppose:反對，抵制（接V-ing形式），營.…人較量beopposedto:反對

Iwouldopposechangingthelaw.

Mostofusareopposedtothisplan.

17.consequence:結(jié)果，后果，影響.

Don'tworry.Itisofnoconsequence.別擔心，沒什么重要的.

Youmusttaketheconsequencesifyoudon'tdoyourduty.

如果你不盡職你必須承擔嚴重的后果.

Shehaslosthermemoryinconsequenceoftheaccident.

她因那次車禍而失去了記憶.

inconsequence=asaresult:結(jié)果是，因此inconsequenceof=asaresultof:由

于.…緣故，作為.…的結(jié)果.accept/taketheconsequences:承擔后果

Hestudiedhard,andinconsequencehepassedtheexam.

Thechildwasborndeformedinconsequenceofaninjurytoitsmother.

由于母親受過傷，這小孩生下來是畸形.

18.range:種類，范圍.

Mostofthestudentsareinthe16-19ageranges.大多數(shù)學生的年齡介于16歲至19

歲之間.

Thiswasbeyond/outoftherangeofhisexperience.這超出了他的閱歷.

19.evenif/eventhough:即使，盡管，引導(dǎo)讓步狀語從句.

Evenif/thoughheoftenfeelstired,helivesafulllife.

rilgetthere,evenifIhavetowalk.我就是走也要走到哪里去.

20.keepondoingsth.繼續(xù)做某事keepdoingsth.一直干某事keepsb.doing

sth.某人連續(xù)做某事.

Hekeptstandingthereforhalfanhourwithoutmoving.

Hekeptthetruthfromus.他對我們隱瞞了真相.

Theteacherkeptthestudentstandingforanhour.

21.onbehalfof=onone'sbehalf:代表一方，作為.…的代言人

Iagreeyouonbehalfofmyparents.

OnbehalfofmycolleaguesandmyselfIthankyou..

我代表我的同事以及我自己向你表示感謝.

22.advocate:主張，提倡，擁護；辯護人，擁護者，提倡者.

Theydon'tadvocatebuildingabigchemicalfactorybythelake.

TheChinesepeopleadvocatetheleadershipoftheChineseCommunist.

Wearealltheadvocatesoftheparty.我們都是中國共產(chǎn)黨的擁護者.

23.putupwith（=livewithsth./sb.）:容忍，忍受.

Shefounditdifficulttoputupwiththepain.

Ijusthadtolearntolivewiththepain.

相關(guān)短語：putaway處理掉，putdown放下，記錄下，鎮(zhèn)壓，puton,putup,putback

放回原處，恢復(fù)正常，putoff延期，putout,putforward提出

24.circumstance:環(huán)境，情況,條件,狀況，境況.

Thecompanyreservestherighttocancelthisagreementincertaincircumstances.

本公司保留在一定條件下取消這項協(xié)議的權(quán)利.

IknowIcantrusthim,inanycircumstances.

in/undernocircumstances:決不，無論如何不，放在句首需要倒裝.

in/undercircumstances:在這種情況下，既然如此

類似的短語:atnotime,innoway,bynomeans,onnoaccount.

In/Undernocircumstancesshouldyousellcigarettetoyouths.

Don'topenthedoor,inanycircumstances.

Shedidthejobverywellinthecircumstances.

Underthecircumstanceshefeltunabletoacceptthejob.

25.contribution:貢獻,捐款，捐資

count:（=matter）認為重要，數(shù)，算入.

Allcontributionswillbegratefullyreceived.我們對所有捐資表示感謝.

Shemadeaverypositivecontributiontotheoverallsuccessoftheproject.

她對項目的全面成功做出了積極的貢獻.

Itisnotwhatyoureadbuthowyouread.

不是你讀的什么，而是你怎么讀的是重要的.

Shebegantocountuphowmaygueststheyhadtoinvite.

Icountheramongmyclosestfriends.我把她看作我最親密的朋友.

26.countdown（倒計時），beyondcount（不計其數(shù)），takecountof（計...的數(shù)），counton

sb/sth（依靠,指望某人/某物）atthelastcount（根據(jù)有關(guān)…數(shù)字的最新消息），lose

cont（ofsth.）（數(shù)不清）

She，salreadycountingdowntothebigday.她已經(jīng)在對這一重大日子的倒計時了.

ChinahasbeencountingdowntotheShanghaiEXPO.中國已經(jīng)在對上海世博會進

行倒計時了.

Don'tcountontime.別指望他了吧.

He'dappliedfor20jobsatthelastcount.根據(jù)有關(guān)的最新消息他申請過20個職位.

Ilostcountandhadtostartagain.我數(shù)著數(shù)著忘了，不得不從頭開始數(shù).

27.thereisnodoubtthat毫無疑問的

類似句型：

Thereisnoknowing/telling沒法知道/說

Thereisnoneed沒有必要.…

Thereisnoreason….沒有理由.…

Thereisnopossibilitythat是沒有可能的.

Itisnowonderthat真奇怪/真是令人奇怪.

Step6Homework

1.FinishofftheWorkbookexercises.Doexercises1inUsingandExpressioninyour

exercisesbook.

2.Learntheusefulnewwordsandexpressionsbyheart.

Reflectionafterteaching:

Periodthree:Grammar——theUseof"it"(2)

Teachingimportantanddifficultpoints:

Getthestudentstomasterthestructureandusagesoftheemphasizedsentences.

Enablethestudentstoearnhowtousetheemphasizedsentences.

Step1Revision

1.Checkthehomeworkexercises.

2.Dictatesomenewwordsandexpressions.

Step2Warmingup

Askstudentstoreadandcomparesomesentencesbelow:

ItwasascientistcalledChardKeeling,whomadeaccuratemeasurementsofthe

amountofcarbondioxideintheatmospherefrom1957to1997.

Itistheburningofmoreandmorefossilfuelsthathasresultedinthisincreasein

carbondioxide.

Step3Summingup

Itis/was+被強調(diào)部分+who/that

Grammar:Theuseof"it"

1.這道題是考查強調(diào)句還是定語從句？還是……

Itwasinthesmallhousewasbuiltwithstonesbyhisfatherhespent

hischildhood.

A.which,thatB.that,whichC.which,whichD.that,where

【陷阱】幾個干擾項均有可能誤選，主要是分不清為強調(diào)句型，或即使分清為強

調(diào)句型，也分不清強調(diào)哪一個成分.

【分析】答案選A,第一空填which,用以引導(dǎo)定語從句；第二空填that,為強

調(diào)句的結(jié)構(gòu)詞，被強調(diào)部分為inthesmallhouse(以及修飾它的定語從句whichwas

builtwithstonesbyhisfather)o此題難就難在強調(diào)句型中套用了定語從句。請再看類

似例子：

(1)Itwastheboyhadbeeninprisonstolethemoney,(from

)

A.who,whereB.that,howC.who,thatD.that,which

此題答案選C,全句為強調(diào)句，被強調(diào)成分是theboy(以及修飾它的定語從句

whohadbeeninprison)o

(2)Itwasjustintheroomhewasbornhedied.

A.where,whichB.that,thatC.where,thatD.which,that

此題答案選C,全句為強調(diào)句，被強調(diào)成分是inthisroom,wherehewasborn為

修飾theroom的定語從句

這道題是考查強調(diào)句還是狀語從句？仔細看看：

一Wasitunderthetreeyouwereawaytalkingtoafriend?

—Sure.ButwhenIgotbackthere,thebikewasgone.

A.thatB.whereC.whichD.while

【陷阱】此題很容易誤選A,認為這是強調(diào)句型。

【分析】其實此題應(yīng)選D。做好此題的關(guān)鍵是正確理解上下文的語境。在此句

中，it是代詞，指代thebike,句意為：“當你離開去同朋友談話的時候，你的自行

車是在這樹下嗎?”“當然，但當我回來時，自行車就不見了?！爆F(xiàn)在反過來分析一下，

假若選A,將此句判為強調(diào)句，句子即為Wasitunderthetreethatyouwereaway

talkingtoafriend?若進一步轉(zhuǎn)換為非強調(diào)句，句子則為Underthetreewhileyouwere

talkingtoafriend,句意顯然很荒唐。

一、考查結(jié)構(gòu)詞的選擇與使用

強調(diào)句的基本結(jié)構(gòu)是“It+be+被強調(diào)成分+that(who)…”，其中的結(jié)構(gòu)詞it和

that(who)為高考英語考查強調(diào)句時最?？疾榈目键c。如：

1.1don'tmindhercriticizingme,butishowshedoesitthatIobjectto.

A.itB.thatC.thisD.which

【解析】答案選A。此題考查itis…that…這一強調(diào)句句型。句意為：我不介意

她批評我，我反對的是她批評我的方式。句中空格處填強調(diào)句結(jié)構(gòu)詞讓。

2.Itisnotwhoisrightbutwhatisrightisofimportance.

A.whichB.itC.thatD.this

【解析】答案選C。此題考查itis...that…這一強調(diào)句式，被強調(diào)的是notwhois

rightbutwhatisright,全句意為：重要的不是誰是對的，而是什么才是對的。句中空

格處填強調(diào)句結(jié)構(gòu)詞thato

二、考查強調(diào)句的特殊疑問句形式

強調(diào)句型的陳述句形式和一般疑問句形式一般還好理解，但若以特殊疑問句形

式出現(xiàn)，則很容易誤解。比較：

Jimtoldusthenews.（非強調(diào)句）

ItwasJimthattoldusthenews.（強調(diào)句型的陳述句形式）

WasitJimthattoldusthenews?（強調(diào)句型的一般疑問句形式）

Whowasitthattoldusthenews?（強調(diào)句型的特殊疑問句形式）

特殊疑問句形式的強調(diào)句可視為對陳述句強調(diào)中的被強調(diào)成分提問得來，如對

Itwasyesterdaythathearrived.這一句中的yesterday提問，即得到Whenwasitthathe

arrived?

請看高考真題：

1.1justwonderthatmakeshimsoexcited.

A.whyitdoesB.whathedoesC.howitisD.whatitis

【解析】答案選Do注意whatitisthatmakeshimsoexcited為賓語從句，用作動

詞wonder的賓語。如果去掉主句Ijustwonder將原句改為疑問句則是：Whatisitthat

makeshimsoexcited?

2.—thathemanagetogettheinformation?

一Oh,afriendofhishelpedhim.

A.WherewasitB.WhatwasitC.HowwasitD.Whywasit

【解析】答案選Co由答語的內(nèi)容可知，空格處應(yīng)填how。

三、考查not…until…句式的強調(diào)句形式

,5

not...until用于強調(diào)句型時的基本形式為"Itis（was）notuntil...that...O如：

1.ItwehadstayedtogetherforacoupleofweeksIfoundwe

hadalotincommon.

A.wasuntil;whenB.wasuntil;that

C.wasn'tuntil;whenD.wasn'tuntil;that

【解析】答案選D。此題考查not...until…句式的強調(diào)形式。

又如：ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamous

filmstar.直到她取下墨鏡，我才意識到她是一位著名影星。

2.ItwasnotuntilshegothomeJenniferrealizedshehadlostherkeys.

A.whenB.thatC.WhereD.before

【解析】答案選B?？疾閚ot…until…句式的強調(diào)形式。

又如：ItwasnotuntilImetyouthatIknewrealhappiness.直到我遇到你以后，我

才真正體會到幸福。

四、考查強調(diào)句與非強調(diào)句的辨別

1.ItwillsoonbefiveyearswecametoliveinCairo.

A.thatB.whenC.sinceD.as

【解析】答案選C。此題不是考查強調(diào)句型，而是考查since的用法，句意為“我

們來到開羅居住快五年了”。

又如：Itistwoyearssinceheleftthecountry.他離開這個國家已經(jīng)兩年了。/It's

quitesometimesincewewrotetoeachother.我們互相通信已有不少時間了。

2.“WasithereyouwereawaytalkingtoafHend?""Sure.ButwhenIgot

backthere,itwasgone/5

A.thatB.whileC.whichD.where

【解析】答案選B。此題不是考查強調(diào)句型，而是考查while的用法，while在

此表示“在……期間”，句意為：當你離開去跟朋友說話的時候它在這兒嗎？

Step4Grammarpractice

DoExercise2inDiscoveringusefulstructuresonpage20.

DotheexercisesinUsingstructuresonpage64.

Multiplechoice:

1)Wasitintheplacetheyoncebuiltalittlebuilding?

A.thatB.inwhichC.beforeD.which

2)Itisheoftenbreakstheschoolrulesmakeshisheadteachers

unsatisfiedwithhim.

A.what;thatB.that;whatC.that;thatD.because;that

3)ItisbecauseEnglishisbeingwidelyusedatpresent.

A.whywelearnithardB.thatwelearnithard

C.whichwemustlearnD.whenweshouldlearn

4)——Wasitwhathesaidorsomethingthathedidmadeyoucrysosadly,

tom?

No,notreally.

A.whichB.thatC.whenD.what

5)thepeoplehavebecomemasterofthecountrysciencecanreally

servethepeople.

A.Itisonlythen;thatB.Itwasthat;when

C.Itisonlywhen;thatD.Itwaswhen;then

6)-Ithinkwehavemetthewordbefore.

——Yes.Itisinthereadingmaterialwereadingyesterday.

A.that;didB.that;wereC.when;wereD.when;did

7)Itwasthere,thepolicebelieve,shewasabletoactivetherecordershekept

inherbag.

A.untilB.whichC.thatD.when

8)Itwasthissenseoffailuremadehimdeterminedtosucceedinhisnewlife.

A.whoB.whichC.thatD.why

9)thatsomanypeoplethinkthatbeingperfectisthewaytogo?

A.ItiswhyB.WhyisitC.Whyitis