名词性从句基础

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1、名词性从句GrammarNounClausesinclude:SubjectiveClause(主语从句),ObjectiveClause(宾语从句),PredicativeClause(表语从句),AppositiveClause(同位语从句)1.Whenwewillstartisnotclear.2.MrsBlackwon’tbelievethathersonhasbecomeathief.3.Myideaisthatweshoulddoitrightnow.4.Ihadnoideathatyouwereherfrie

2、nd.主语从句宾语从句表语从句同位语从句1.Itisknowntousthatheisafamoussinger.2.Thethoughtthatwemightsucceedexcitedus.3.Whathesaidiscorrect.4.Thequestionishowhedidit.5.Iamgladthatshewillcome.连接词Conjunctionthat（本身无意义）if（是否）whether（ornot）连接代词ConjunctionpronounWho谁（主格）whom谁（宾格）whose谁的（所有

3、格）which（哪一个，哪一些指人或物）what（什么）whatever（无论什么）whoever（无论谁）等连接副词ConjunctiveadverbWhenwherewhyhow引导名词性从句的三类词(与定语从句相区别)主语从句在句中充当主语的从句叫做主语从句。1.Thatheisafamoussingerisknowntous.2.WhenhewillgotoAmericaisnotyetfixed.3.WhetherhewillcomehereonWednesdayisnotcertain.1.从句作主语时，就算是

4、句子意思完整，都要加上从属连词thatThathewillcomehereonWednesdayiscertain.2.主语从句表示“是否”只用“whether”而不用“if”WhetherhewillcomehereonWednesdayisnotcertain.tips3.主语从句有时用“it”作形式主语，把真正的主语放在后面，以避免头重脚轻。Itisknowntousthathewillcomehere.It+be+形容词＋that从句Itisnecessarythat…Itisimportantthat….Itis

5、obviousthat……It+be+-ed分词＋that从句Itisbelieved/said/reported/that…Itisknowntous/allthat….Ithasbeendecidedthat……有必要…重要的是…很明显……人们相信/说/据报道…众所周知…已经决定……It+be+名词＋that从句Itiscommonknowledgethat…Itisasurprisethat….Itisafactthat……It+不及物动词＋that从句Itappearsthat…Ithappensthat….Ito

6、ccurredtomethat………是常识令人惊奇的是…事实是……似乎…碰巧…我突然想起……表语从句在句中充当表语的从句(即放在be动词后面)叫做表语从句。Theproblemisthatwedidn’tgetintouchwithhim.ThisishowHenrysolvedtheproblem.1.引导表语从句的连接词一般不省略。.Ourpurposeisthathecanrealizehisfaults.2.表语从句表示“是否”只用“whether”而不用“if”Thequestioniswhetheritiswo

7、rthdoing.3.如果句子的主语是suggestion,advice.order等名词时,后面引导的表语从句用should+动词原形,should可省略.他建议我们立刻完成工作。Hesuggeststhatwe(should)finishtheworkatonce.Hissuggestionisthatwe(should)finishtheworkatonce.宾语从句在句中充当及物动词或介词宾语的句子叫做宾语从句。ItoldhimthatIwouldcomebacksoon.Webelieve(that)heisho

8、nest.Idon’tknow（that）youwillcomehere.1.that在宾语从句中不充当任何成分，在口语或非正式的文体中常常被省去。2.what不可省,有意义,充当成分.Idon’tknowwhathelikes.3.如果主句中有形容词或名词作宾语补足语时，一般用it来作形式宾语，把从句