同位语从句

1.Thethoughtthattheycouldcrossthewholecontinentwasexciting.2.TheyforgetthefactthatCanadais5,500kilometresfromcoasttocoast.3.ThegirlsweresurprisedatthefactthatoceanshipscansailuptheGreatLakes.同位语从句在idea,fact,news,hope,belief,thought,doubt等名词后面,用that或者连接代词、连接副词引导的从句。同位语从句是对前面的名词的解释，说明前面的名词的具体含义。(一)同位语从句的引导词：连词:that,whether连接代词:who,what,whose,which连接副词:when,where,why,how(二)同位语从句的种类1.由连词that,whether引导的同位语从句,连词在从句中不做成分,只起连接主、从句的作用。(1)Wearesurprisedatthefactthatthechildrendiditallontheirown.(2)Ihavenoideawhetherweshouldsendtheequipmenttothem.2.由连接代词、副词引导的同位语从句,除连接主从句,它们还在从句中做相应的成分。(1)Thequestionwhomayhelpusisnotclear.(2)Theyarosethequestionwhereweweretogetthemachinesneeded.(三)注意的问题1.如果同位语从句所解释的名词是order,advice,suggestion,proposal,demand,request等时,从句中要使用虚拟语气，从句谓语动词用(should)do。Theyreceivedordersthatthework(should)bedoneatonce.2.在同位语从句中,为了避免头重脚轻，可以把谓语提前,将从句放在句末。Wordcamethattheirheadmasterwouldvisitourscool.3.同位语从句中的固定句型Thereisnodoubtthat…毫无疑问Thereisnodenyingthat…无可否认Thereisachancethat…有可能Thereisapossibilitythat…有可能Thereisanopportunitythat…有可能4.定语从句和同位语从句的区分Thefactthattheseawatercannotbeusedfordrinkingisknowntoall.(that在从句中不充当成分,引导同位语从句)Thisisthefact(that)youmustknowclearly.(that替代thefact在从句中做know的宾语,引导定语从句)(1)同位语从句解释说明前面抽象名词的内容。(2)that引导的同位语从句中，that在从句中不做任何成分，从句有完整的句子结构。(3)that引导的定语从句中，that代替先行词在从句中做主语或宾语，从句语成分不完整。