2016届高考英语二轮语法专项课件：名词性从句（新人教版）
<p> 名词性从句 一、名词性从句的连接词 1．连接词<span word="that">that</span>，<span word="whether">whether</span>和<span word="if">if</span> (1)<span word="whether">whether</span>与<span word="if">if</span>的用法比较 二者均可作“是否”讲，都可以引导名词性从句，引导宾语从句时可以互换。 <span word="I">I</span> <span word="don">don</span>'<span word="t">t</span> <span word="know">know</span> <span word="whether">whether</span>/<span word="if">if</span> <span word="he">he</span>'<span word="ll">ll</span> <span word="attend">attend</span> <span word="the">the</span> <span word="meeting">meeting</span>. 在下列情况下，常用<span word="whether">whether</span>，不用<span word="if">if</span>。 ①<span word="whether">whether</span>引导从句可以放于句首。 <span word="Whether">Whether</span> <span word="he">he</span> <span word="comes">comes</span> <span word="or">or</span> <span word="not">not</span> <span word="makes">makes</span> <span word="no">no</span> <span word="difference">difference</span>. ②<span word="whether">whether</span>可引导表语从句和同位语从句，<span word="if">if</span>不可。 <span word="The">The</span> <span word="question">question</span> <span word="is">is</span> <span word="whether">whether</span> <span word="it">it</span> <span word="is">is</span> <span word="worth">worth</span> <span word="trying">trying</span>. <span word="The">The</span> <span word="question">question</span> <span word="whether">whether</span> <span word="he">he</span> <span word="should">should</span> <span word="join">join</span> <span word="the">the</span> <span word="team">team</span> <span word="has">has</span> <span word="not">not</span> <span word="been">been</span> <span word="decided">decided</span> <span word="upon">upon</span>. ③<span word="whether">whether</span>可以作介词宾语，<span word="if">if</span>则不可。 <span word="I">I</span> <span word="haven">haven</span>'<span word="t">t</span> <span word="settled">settled</span> <span word="the">the</span> <span word="problem">problem</span> <span word="of">of</span> <span word="whether">whether</span> <span word="I">I</span>'<span word="ll">ll</span> <span word="lend">lend</span> <span word="him">him</span> <span word="the">the</span> <span word="money">money</span>. ④<span word="whether">whether</span>后可以加不定式，<span word="if">if</span>不可。 <span word="He">He</span> <span word="didn">didn</span>'<span word="t">t</span> <span word="know">know</span> <span word="whether">whether</span> <span word="to">to</span> <span word="get">get</span> <span word="married">married</span> <span word="or">or</span> <span word="to">to</span> <span word="wait">wait</span>. ⑤可以用<span word="whether">whether</span>...<span word="or">or</span>引导让步状语从句，意为“无论，不论”，<span word="if">if</span>则不可。 <span word="Whether">Whether</span> <span word="it">it</span> <span word="rains">rains</span> <span word="or">or</span> <span word="snows">snows</span>，<span word="I">I</span> <span word="don">don</span>'<span word="t">t</span> <span word="care">care</span>. 2．连接代词 引导名词性从句的连接代词有：<span word="who">who</span>，<span word="whom">whom</span>，<span word="whose">whose</span>，<span word="what">what</span>，<span word="which">which</span>，<span word="whatever">whatever</span>，<span word="whichever">whichever</span>，<span word="whoever">whoever</span>。连接代词在句中既起连接作用，同时又充当主语、宾语、定语、表语等成分。 3．连接副词 引导名词性从句的连接副词有：<span word="when">when</span>，<span word="where">where</span>，<span word="how">how</span>，<span word="why">why</span>。连接副词在句中既是连接词，又作状语。 二、主语从句 1．主语从句在复合句中充当主语，大多数主语从句都可以用<span word="it">it</span>作形式主语而把主语从句置于句尾。 2．<span word="that">that</span>引导主语从句时可用<span word="it">it</span>作形式主语，<span word="that">that</span>不可省；<span word="what">what</span>引导的主语从句表示“……的东西”时，一般不用<span word="it">it</span>作形式主语；<span word="whatever">whatever</span>，<span word="whoever">whoever</span>，<span word="whichever">whichever</span>一般也不用<span word="it">it</span>作形式主语。 <span word="That">That</span> <span word="she">she</span> <span word="will">will</span> <span word="succeed">succeed</span> <span word="is">is</span> <span word="certain">certain</span>. →<span word="It">It</span> <span word="is">is</span> <span word="certain">certain</span> <span word="that">that</span> <span word="she">she</span> <span word="will">will</span> <span word="succeed">succeed</span>. <span word="What">What</span> <span word="he">he</span> <span word="needs">needs</span> <span word="is">is</span> <span word="more">more</span> <span word="experience">experience</span>.</p>
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