高中名词性从句讲解演示教学

精品文档名性句题一概主语从句、表语从句、宾语从句和同位语从句在复合句中的作用相当于名词，因此这四种从句被称为名词性从句。①主语从句名词性从句共有四种:我们先看几个句：

②表语从句③宾语从句④同位语从句是开先招什大了告我天是么色告我夜想梦么终你发每爱都险

takesfirststepnotbigTellwhattheseatodayTellwhatyoudreamallyyou’llfindoutthateveryloveis二知点主从：主语从句在整个句子中作主语。导主语从句连词有that，，if是否；连接代词who，what，which；连接副词when，，等。请注意，过的高考中考的很多。主语从句的不充当子成，是纯连词通不略分置句时绝不以略drivernotwarobvious.Itthatthedrivernotcontrolhis.（2参照必3P）为了避免主语显得过长，可以用it作句子的主语，把主语从句移到句子的末尾。（英语中有一种美，叫做尾重）表从：表从句出现在系动后，充当表语。ThetroubleisthatareshortofGogetcoat.It’swhereyouit.引导表语从句除了上述三类词外还有if/asthough等Thereason(why/for…..)that…It/This/Thatbecause…连系动词appear,look,seem的个常用句型精品文档

精品文档Itseems/appearsthat….Itlooks/seemsasif/asthough与实相符用陈述语气，与事实相反用虚拟语宾语句（可省略）及物动词，形容词和介词后加宾语从句作其宾语。宾语从句时态与主句相呼应，但宾语从句表示的是客观真理或普遍现象除外ThetoldtheeartharoundtheIamafraid(that)IHewillpayfordone.当宾语从句后带宾补时，要用主+语+it+宾补+that+从句,that不省Iitwillwellher在宾语从句常可以省略，但由或连两个或多个宾语从句时，仅可以省略第一个连词thatHehadeatennothingthatwasnhungry.注意区别if引的宾语从句和条件状语从句Idon’tknowwillcome.（if是）Ifcomes,Iletknow.（if如）同语句（不省略）对前面的名词进一步说明。用在下列名词fact,truth,idea,order,suggestion,wordThetoldthattheeartharoundTherenodoubtthatwillcome.Therewhetherwillcome.Histhatwe(should)goforusup.Wordcamethatwouldtoinspectthem.引导的同位语从句与定语从句的区别：在同位语从句中：that不成分，不可以省略；在定语从句中：作分，且作宾时可以省略Weareinnewsthatsomevisitour同位语Weareinnews(that/which)toldus.定语从句where引导的同位语从句与定语从句的区别：在定语从句中where前分别表示时间地的先行词；而在同位语从句中无此对应关系精品文档

精品文档atallwherehehasgone.(同位语从句Gogetcoat.It’sintheplacewhereyouit.定从句三．注意点：疑词whatever/whoever/however/whenever等可引导名词性从句，也可以引导步状语从句，而nomatter+问词只能引导让步状语从句总体规律：等的使用范围比no等广Nomatterwhathappens,hewillmind.(√)=happens,hewillnotmind.(√)matteryousayveryimportant.(×)

让步状语从句（用逗号隔开）让步状语从句Whateveryousayisveryimportant.√)

主语从句（名词性从句）Ibelievehesays.Iwillbelieve与的别是谁的意思，表示具有疑问，whoever相当于anyonewho无论谁”roomlasttoturnofflights.tellmewho．从句缺少主语、宾语或表语时，引导词通常用what。Whatmeherexcellentperformance.Whatgetseemsbetterthanwhatwehave.Whatseemsusmay注区分…that…结构引导主从句还是强调句主语从句it指句中引的内容（通常较长），去掉It，句子不成立强调句句型Itis/was+被强调部分+that,去Itis/was,，句子仍然成立。Ithave主从句Itallthatearthisround.语从句精品文档

精品文档Itonlylatelyhashadfamilyhimself.强句Whatitthatwanted?Idonknowwhatitwashewanted.强调句Itinhotelwherediscussedproblem强句连whetherif时可以互换，但注意下列情况总体规律：的用范围比if要（1后面出现ornot时用Iknownotwillcome.连词后直接加不定式，不能用if只能用Hedoesn’tknowwhethertostayornot.可防句首，而if不Whetherhewillcome,IItuncertainifwillleaveforBeijingtomorrow.(（if可导主语从句）IfwillisWhetherhewillleaveforBeijingtomorrowisuncertain.√)表从句中只能用Thehewill