同位语从句用法小结在复合句中充当同位语的名词性从句称为同位语从句。在使用同位语从句时,应注意以下五个方面:一、常见带有同位语从句的抽象名词advice,announcement,argument,belief,claim(声明、主张),conclusion,decision,evidence,explanation,fact,feeling,hope,idea,impression,information,knowledge,message,news,opinion,order,probability,promise,proposal,remark,reply,report,saying,statement(声明、陈述),suggestion,thought,warning,wish,word二、同位语从句连接词的选用在英语中,引导同位语从句的词通常有连词(that,whether),连接代词(what,who等)连接副词(how,when,where)。Thequestionwhoshoulddotheworkrequiresconsideration.Ihavenoideawhatheisdoingnow.。Therewaslittlehopethathewouldsurvive.他幸存的希望很小。Hehasn'tmadethedecisionwhetherhewillgothere.It'saquestionhowhedidit.那是一个他如何做了此事的问题注:在名词doubt“怀疑”后的同位语从句用whether连接;在nodoubt“不怀疑”之后的同位语从句用that连接。例如:ThereisnodoubtthatTomwillkeephispromise.三、同位语从句在句中的位置1.一般情况下同位语从句跟在某些名词(如news,idea,fact,promise,hope,message等)的后面,用以说明该名词所表达的具体内容。例如:Thenewsthatourwomenvolleyballteamhadwonthechampionshipencouragedusallgreatly.2.有时同位语从句可以不紧跟在它所说明的名词后,而被别的词语隔开,在语法上叫做分隔式同位语从句。例如:Thethoughtcametoherthatmaybeshehadleftthedooropenwhenshelefthome.四、同位语从句的语气在suggestion,advice,request,order等意为“建议;命令;要求”的名词后,同位语从句中的谓语动词通常用“should+动词原形”的虚拟语气结构,句中的should可以省略。例如:Ourteachergaveussomeadvicehowwe(should)usethecomputer.Thesuggestioncamefromthechairmanthatthenewrule(should)beadopted.Thegovernmentgavetheorderthatallthesehouses(should)bepulleddowninthreeweeks.政府下令三个星期内所有这些房子都要拆掉。五、同位语从句与定语从句的用法区别区别(1)that在同位语从句中没有词义,不充当句子成分;而在定语从句中充当主语、宾语等句子成分。区别(2)同位语从句和先行词是同等的关系;而定语从句是用来修饰先行词,是从属的关系。区别(3)whether,what,how可以用来引导同位语从句;而它们不能用来引导定语从句。