AdverbialclauseofconditionLookatthesentencesfromthepassage.1Ifyousaytheword“communication”,mostpeoplethinkofwordsandsentences.Weuse“learned”bodylanguagewhenweareintroducedtostrangers.Nowtickthetruestatements1Thesentencesfromthepassage…1.Describecommonsituations2.Describeimpossiblesituations3.Useiforwhentointroducethesituation4.Explaintheresultofthesituationintheotherpartofthesentence5.Usethepresentsimpletenseinbothpartsofthesentence√√√√Matchthetwopartsofthesesentences.31.Whenyoumeetsomeoneforthefirsttime2.Ifyousaygoodbyetosomeone3.Whenyoushowsomeonetheway4.Ifyounodyourhead5.Whenyouenterahouse6.IfyoushakeyourheadA.youusuallymeannoB.youusuallypointC.youoftenwavetothemD.youdon’ttakeyourshoesoffE.youshakehandswiththem.F.youusuallymeanyes.3.AdverbialClausesofConditionI.if1)Ifhehadworkedharder,hewouldhavepassedtheexam.2)Ifyouworkharder,youwillsucceed.Workharder,andyouwillsucceed.Workharder,oryouwon’tsucceed.Workingharder,youwillsucceed.II.unless1)Wecan’twritetoMaryunlessshetellsusheraddress.Wecan’twritetoMaryifshedoesn’ttellusheraddress.*III.aslongas(只要)1)IwillnevergiveuplearningaslongasIlive.2)Youmayborrowthebookaslongasyoukeepitclean.*IV.onconditionthat（条件是）We’llletyouusetheroomonconditionthatyoukeepittidy.*V.incase(万一）You’dbettertakeyourraincoatwithyouincaseitrains.种类从属连句例句说明条件状语从句ifunlessas/solongasincasesofaras•Difficultiesarenothingifwearenotafraidofthem.•Weshallgotheretomorrowunlessitrains.=Weshallgotheretomorrowifitdoesn’train.•So/Aslongasyouworkhard,youwillsucceed.•IncaseIforget,pleaseremindmeaboutit.•SofarasIknow,thebookwillbepublishednextmonth.1.unless从句的谓语只能用肯定式。2.unless和if…not同义，unless是书面语，if…not是口语，通常二者可以换用。3.条件状语从句中的谓语动词的时态一般要用现在时或过去时代替一般将来时或过去将来时。Summary问题1：1、TheWTOcannotliveuptoitsname____itdoesnotincludeacountrythatishometoonefifthofmankind.（2000全国）A．aslongasB．whileC．ifD．eventhough2、Itisknowntoallthat_____youexerciseregularly,youwon’tkeepgoodhealth.（05重庆卷）A.unlessB.wheneverC.althoughD.ifCAunless相当于ifnot，意思是“除非…”“如果不…就…”。这也是高考的热点之一。复习时也应给予高度重视。问题2：1、_____Icansee,thereisonlyonepossiblewaytokeepawayfromthedanger.（04北京春季）A.AslongasB.AsfarasC.JustasD.Evenif2、IalwaystakesomethingtoreadwhenIgotothedoctor’s________Ihavetowait.（05全国卷3）A．incaseB．sothatC．inorderD．asifBAaslongas与asfaras都可引导条件状语从句，aslongas表示“只要…”，asfaras表示“就…而论（而言）”。题1根据题意应该选用B。incase表示“以防”，根据题2的句意，不难作出选择。Exercise2onPage26Completethesentenceswiththecorrectformoftheverbsinbrackets.1.Ifyou_________acakeyourhost_________verypleased.(take,be)2.Unlesstheweather________better,I________athome.(get,stay)3.He_______homeearlyifhe___________well.(go,notfeel)4.What____I_______ifthey______aboutpolitics?(do,talk)5.Ifyou____yourhandthetaxi_______.(raise,stop)6.I____________anythingunlesshe______me.(notsay,ask)takewillbegetswillstaywillgodoesn’tfeelshalldotalkraisewillstopwillnotsayasksAdverbialclauseofconcessionClausesofConcession(让步）1)Although(Though)heisold,heworkshard.Heisold,butheworkshard.*2)Eventhough(evenif)yousayso,Idon’tbelieveit.(即使)*3.Difficultastheworkis,we’llfinishitontime.Thoughtheworkisdifficult,we’llfinishitontime.4.Wheneve...
