高中语法同位语从句

名词性从句---同位语从句同位语是句子成分的一种,它位于名词、代词后面,说明它们的性质和情况,它可以由名词、代词、名词性短语或从句充当。同位语在复合句中用作同位语的从句叫同位语从句。它一般跟在某些名词后面，用以说明该名词表示的具体内容。同位语的表现形式有以下几种：(1)名词Tom,ourmonitor,isahandsomeboy.(2)代词Imyselfwilldotheexperiment.(3)数词Sheistheoldestamongthemsix.(4)从句Hetoldmethenewsthattheplanehadexploded.他告诉我飞机爆炸的消息。(5)由suchas,thatis引导Somesubjects,suchasmathsandphysics,areverydifficulttolearn.某些学科,例如数学和物理,是很难学的。同位语从句同位语从句一般放在如idea,news,fact,promise,suggestion,belief,truth等含有丰富内涵的抽象的词语后面，用来说明前面那个词的具体内容。一般说来，同位语从句都用that来作连接词，而且不能省略。也可用how,when,where等。他给了她一个承诺，他会在两个月后回来。Hegaveherapromisethathewouldcomebackaftertwomonths.同位语从句有时被别的词把它和名词隔开：注意:Thethoughtcametohimthatmaybetheenemyhadfledthecity．他突然想起可能敌人已经逃出城了。⑵同位语从句的表现形式:①由that引导Iheardthenewsthatourteamhadwon．我听到了我们队获胜的消息。Ihadnoideathatyouwerehere．我不知道你在这里。②由whether引导Thequestionwhetherweneedmoretimetodotheworkhasnotbeendiscussed.③由when引导Ihavenoideawhentheywillgo.If和which不能引导同位语从句同位语从句和定语从句的区别：试比较下面两个例句:Doyouknowthefactthathestolethecar?（that引导同位语从句，不能省略）Doyouknowthefact(that)theyweretalkingabout?（that引导定语从句，作宾语，可以省略）that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略；that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。谈谈句中所含有的从句1.Thenewsthattheplanewouldtakeoffontimemadeeverybodyhappy.2.Thenewsthatisspreadingaroundtheairportisthataheavystormiscoming.3.Thesuggestionthatstudentsshouldlearnsomethingpracticalisworthconsidering.4.Thesuggestionthattheyareconsideringisthatstudentsshouldlearnsomethingpractical.同位语从句定语从句同位语从句定语从句表语从句表语从句1.Modernsciencehasgivenclearevidence____smokingcanleadtomanydiseases.A.whatB.whichC.thatD.where验收练习题2.Newscamefromtheschooloffice______WangLinhadbeenadmittedtoBeijingUniversity.A.whichB.whatC.thatD.where3.Thefacthasworriedmanyscientists____theearthisbecomingwarmerandwarmertheseyears.A.whatB.whichC.thatD.though验收练习题4.Weshouldconsiderthestudents’request______theschoollibraryprovidemorebooksonpopularscience.A.thatB.whenC.whichD.where5.---Isthereanypossibility_____youcouldpickmeupattheairport?---Noproblem.A.whenB.thatC.whetherD.what验收练习题6.Informationhasbeenputforward____moremiddleschoolgraduateswillbeadmittedintouniversities.A.whileB.thatCwhenD.as