高中语法-同位语从句简介

同位语从句简介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theAppositive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。(6)由of引导ThecityofBeijinghasbeengreatlychangedsince2000.自从2000年以来,北京市发生了很大的变化。(7)由or引导Thefreezingtemperature,orfreezingpoint,isthetemperatureatwhichwaterfreezesunderordinarypressure.结冰温度即冰点,是水在常压下结冰时的温度。同位语从句在句中用作同位语的从句叫做同位语从句。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:ThestorygoesthatWilliamTellkilledthekingwithanarrow.Wordcamethattheirteamhadwon.⑵同位语从句的表现形式:①由that引导Thefactthatyouhaven’tenoughtimetodotheworkissimplyunbelievable.Thehopethathemaycomehereisnotgoneyet.ThenewsthathehasbeenelectedpresidentoftheUnitedStatesistrue.Thetruththatheavyobjectsandlightobjectsfallatthesamespeedisknowntoall.Theproblemthatshelaterdevelopedaseriouslungdiseasebotheredscientists.②由whether引导Thequestionwhetherweneedmoretimetodotheworkhasnotbeendiscussed.③由when引导Ihavenoideawhentheywillgo.⑶有时可用namely(即),thatistosay(也就是说),inotherwords(换句话说),thatis(那就是),forexample等引出同位语,说明其前面的名词或代词。有时同位语直接跟在名词或代词的后面。Hetoldusthegoodnews,namely,themuseumisopentoall.ThereisonlyonewayofimprovingyourEnglish,thatis,topracticemore.AltogetherDollyhadlivedforsixyears,halfthelengthofthelifeoftheoriginalsheep.试区分以下句子Doyouknowthefactthathestolethecar?Doyouknowthefactthattheyweretalkingabout?注意：1.如果是定语从句，它的从句肯定是不完整的，关系词肯定在句中充当成分的；而同位语从句中的that只起连接作用。2.定语从句是对先行词起修饰作用，而同位语从句则解释说明先行词的具体内容。(同从)(定从)Tellthedifference1.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•Thesuggestion________________________________________isworthconsidering.学生应该学些实用的东西的建议值得考虑。thatstudentsshouldlearnsomethingpractical•Dadmadeapromise___________________________________________________________________thathewouldbuy_meCDplayerifIpassedtheEnglishtest.爸爸承诺如果我通过英语考试就会给我买个CD机。他建议我们走着去那儿是可以被接受的。(proposal)很多老师都持有一个观点：青少年不应该花费太多时间上网。(holdaview)Manyteachersholdtheviewthatteenagersshouldnotspendtoomuchtimeonline.你知道我们几点开会吗？(idea)他借口说他的车坏在半路了。(makeanexcuse)Hisproposalthatwegothereonfootisacceptable.Doyouhaveanyideawhenwewillhavethemeeting.Hemadeanexcusethathiscarbrokedownonthehalfway.