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动词不定式作状语动词不定式在句中作状语,主要用来修饰动词和形容词,也可用来修饰副词。在句中,不定式可作目的状语、结果状语、原因状语、条件状语等。本单元主要讲解不定式用作目的状语和结果状语的情况。动词不定式作目的状语不定式作目的状语,意为“为了……;以便于……”,常用todo,inordertodo,soastodo,so/such...astodo等结构。如:Theteacherexplainedthesentenceclearlytobeunderstood.Hepromisedtomakealleffortssoastohelpus.注意:1.不定式作目的状语时,其动作通常迟于谓语动词的动作。如:Isaidthattoencouragehim.2.作目的状语的不定式之前,常常加上inorder或soas,以突出或强调目的的含义。如:Iamworkinghardinordertogetabetterresult.3.如用于表示否定,inorder或soas不能省略,用inordernottodo或soasnottodo形式。如:Iwalkedquietlysoasnottodisturbthebaby.4.不定式作目的状语可转换为sothat/inorderthat或so...that...引导的目的状语从句。如:Heworkedveryhardtopasstheexam.→Heworkedsohardthathecouldpasstheexam.→Heworkedhardsothat/inorderthathecouldpasstheexam.动词不定式作结果状语不定式作结果状语时,一般出现在被修饰动词之前,常用于以下结构:1.too...to...意为太……以至不……。如:Theboxistooheavyformetocarry.2.“not+形容词/副词+enoughtodo”意为不够……而不能……。如:Wearenotoldenoughtovoteandtobevoted.3.onlytodo表示意料之外的事情发生。如:Hewentbackhomehappilyonlytofindhishousehadbeenbrokeninto.4.so/such...asto意为“如此……以至于……”。如:Sheissoproudastolookdownuponothers.注意:too...to...中too后跟的是pleased,glad,anxious,willing,ready等形容词时,不表示否定的概念,而是意为“很、非常”。如:Themotherwastooanxioustoseeherson.Thegirlwastooreadytocry.Completethesesentences,usinginordertoorsoasto.1.Hebrokeintothehouse__________________________________.2.Alotofpeoplevisitthecentre_____________________________________.3.Drugusershavetostealthings________________________________.4.Thegovernmentisstartinganadvertisingcampaign________________________________________________.inorderto/soastosavetheoldmaninorderto/soastoseethatfamousstatueinorderto/soastopayfordrugsinorderto/soastotellpeoplenottotakedrugs.Completethesesentenceswithsoas(not)toorinorder(not)to.1.Shestoppedsmoking_____________________befit.2.Hereadthearticleaboutcocaine_________________learnabouttheproblem.3.Thegovernmentputupthepriceofcigarettes_____________________stoppeoplebuyingthem.inorderto/soastoinorderto/soastoinorderto/soasto4.Thepolicewenttothehouse___________________arrestthedrugdealer.5.Shedoesn’tgooutwithpeoplewhosmoke________________________startsmokingagain.inorderto/soastoinordernotto/soasnottoCompletethesesentenceswithsoorsuch(a).1.Thedrugwas____dangerousthat___________________.2.Cocaineis______expensivethat_______________________________.3.Theywere_____addictivedrugsthat________________________________________________.sohebecameveryillsoaddictsstealtogetmoneytobuyitsuchonecouldn’tstopusingthemoncehe/shestarted4.Adamwas____unhappythat______________________________________________.5.Thedruguserwasshouting_____loudlythatthepolicearrestedhim.6.Drugdealersare______dangerouspersonsthatpeopleareafraidofthem.sohewenttoseeadoctor/herefusedtohavelunchsosuchCanyoujointhesetwosentencestogether?•Itwasarainymorning.Icouldn’tdomorningexercise.ItwassucharainymorningthatsucharainymorningthatIcouldn’tdomorningexercise.•Heisacleverboy.Helearnttoplaythepianoattheageoffive.Heissuchacleverboythathelearnttoplaythepianoattheageoffive.•Itwasstormylastnight.Themeetingwascanceled.•Thecostoftreatmentisverydear.Fewaddictscangethelp.Itwassostormylastnightthatthemeetingwascanceled.Thecostoftreatmentissodearthatfewaddictscangethelp.