主语从句超全讲解加练习课件.ppt

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1、GrammarGrammar主语从句主语从句：做主语用的名词性从句，因其在复合句中做主语，又称主语从句，引导主语从句的有连词that，whether，连接代词who，what，which，连接副词when，where，how，why等。RecallingSubjectClauseDefinition（定义）________________________叫做主语从句。Structure_______+_________在复合句充当主语的句子连接词简单句Whether,thatWho,what,when,where...在从句中______成分在从句中_____成分不充

2、当充当（陈述语序）单数Whether,that从属连词Who,what,连接代词when,where...连接副词3.Whatshesaidisnotyetknown.4.Whoevermakesmistakesmustcorrectthem.5.Howhedidthiswasstillapuzzle.6.Whenyouwillcomebackdoesn’tmatterDiscoverySubjectClause连接代词：在从句中充当主语、宾语、表语、定语。连接副词：在从句中充当状语。连接代词连接副词如：whatwhateverwhowhoeverwhich

3、whose.如：howwhywherewhenwheneverwherever.SubjectClause1.Thatweshallbelateiscertain.2.Whethertheywillsellthehouseisnotyetdecided.3.Whatshesaidisnotyetknown.4.Whoevermakesmistakesmustcorrectthem.5.Howhedidthiswasstillapuzzle.6.Whenyouwillcomebackdoesn’tmatterThatWhetherWhatWhoeverHowW

4、hen在从句中不充当成分在从句中充当成分Observing主语宾语状语状语1）从属连词：that，whether等.that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Thathewillwiniscertain.他肯定会赢。Whetherhe’llcomehereisn’tclear.他是否会来这里还不清楚。SubjectClause1.Thatweshallbelateiscertain.2.Whethertheywillsellthehouseisnotyetdecided.ThatWhetherDiscovery相同点：t

5、hat，whether为从属连词，在从句中不充当任何成分,不可省不同点：that:无词义whether:是否…注意:由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._________

6、____________________________*it为形式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.这样就构成了下面一些常用句型:1)Itis+n.+从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*_

7、_____________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat2)Itis+adj.+从句It’scertainthat…肯定…Itispossiblethat...很可能……Itisunlikelythat...不可能……Itisobviousthat…很明显…Itisnecessaryimportantatural...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thi