英语六级阅读部分高频语法3
<p> 一、名词性从句的概念及分类</p><p> 1.顾名思义不，名词性从句就是指在句子中起名词作用的句子，功能相当于名词词组。</p><p> 2.根据其在句中不同的语法功能，名词性从句可以分为主语从句、宾语从句、表语从句和同位语从句。同位语从句起对前面的名词进一步解释说明的作用，陈述该名词的内容。</p><p> 二、名词性从句的三类引导词</p><p> 1.连接词，包括<span word="that">that</span>,<span word="whether">whether</span>和<span word="if">if</span>。<span word="that">that</span>用来引导陈述句，<span word="whether">whether</span>和<span word="if">if</span>引导一般疑问句(从句中的一般疑问句要用陈述句语序，而<span word="if">if</span>引导的从句不能作主语)。</p><p> 2.<span word="wh">wh</span>-关系代词，如<span word="who">who</span>,<span word="whom">whom</span>,<span word="whose">whose</span>,<span word="whatever">whatever</span>,<span word="which">which</span>等，这类词由于在句中作相应的句子成分，因此一般不能省略。</p><p> 3.<span word="wh">wh</span>-关系副词，如<span word="when">when</span>,<span word="why">why</span>,<span word="how">how</span>,<span word="where">where</span>等，该类词一般也作相应的句子成分。</p><p> 三、名词性从句的四种类型</p><p> 1.宾语从句</p><p> ①在许多情况下，作为真正宾语的<span word="that">that</span>从句后置，而用<span word="it">it</span>作形式宾语，此时，<span word="that">that</span>不可省略。例如：<span word="You">You</span> <span word="may">may</span> <span word="rely">rely</span> <span word="on">on</span> <span word="it">it</span> <span word="that">that</span> <span word="I">I</span> <span word="shall">shall</span> <span word="help">help</span> <span word="you">you</span>.，<span word="rumor">rumor</span>(流言)，<span word="agreement">agreement</span>(同意，协议)，<span word="belief">belief</span>(信仰)，<span word="concept">concept</span>(观念，概念)，<span word="idea">idea</span>(想法)，<span word="question">question</span>(问题)，<span word="suggestion">suggestion</span>(提议)，<span word="thought">thought</span>(想法)，<span word="conviction">conviction</span>(确信，定罪)，<span word="doubt">doubt</span>(怀疑)，<span word="decision">decision</span>(决定，决心)，<span word="assumption">assumption</span>(假定，设想)，<span word="evidence">evidence</span>(迹象，证据)，等。例如：<span word="The">The</span> <span word="news">news</span> <span word="that">that</span> <span word="I">I</span> <span word="have">have</span> <span word="passed">passed</span> <span word="the">the</span> <span word="exam">exam</span> <span word="is">is</span> <span word="true">true</span>.</p>
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