高中英语语法详解：名词性从句中的同位语从句
<p>在复合句中充当同位语。</p><p>1. <span word="that">that</span>引导同位语从句。</p><p>在下列名词后可用<span word="that">that</span>引导同位语从句<span word="answer">answer</span>, <span word="belief">belief</span>,<span word="doubt">doubt</span>, <span word="fact">fact</span>, <span word="hope">hope</span>, <span word="idea">idea</span>, <span word="information">information</span>, <span word="knowledge">knowledge</span>, <span word="law">law</span>, <span word="news">news</span>, <span word="opinion">opinion</span>, <span word="plan">plan</span>, <span word="suggestion">suggestion</span>, <span word="thought">thought</span>, <span word="truth">truth</span>等。</p><p><span word="I">I</span> <span word="had">had</span> <span word="no">no</span> <span word="idea">idea</span> <span word="that">that</span> <span word="you">you</span> <span word="were">were</span> <span word="here">here</span>.</p><p><span word="The">The</span> <span word="story">story</span> <span word="goes">goes</span> <span word="that">that</span> <span word="william">william</span> <span word="killed">killed</span> <span word="his">his</span> <span word="wife">wife</span>.</p><p>注意</p><p>①同位语从句引导词<span word="that">that</span>无含义，不充当成分，不可省略。</p><p>②同位语从句与其说明的名词或代词为同一内容,故可以用<span word="is">is</span>把前边的中心词和从句连接成一个句子。</p><p>③同位语从句前一般没有逗号。</p><p><span word="that">that</span>引导同位语从句与引导定语从句的区别：</p><p><span word="that">that</span>引导同位语从句时只起连接作用，不充当任何成分;</p><p><span word="that">that</span>引导定语从句时，在从句中要作成分，如主语、宾语等。</p><p>①<span word="He">He</span> <span word="told">told</span> <span word="me">me</span> <span word="the">the</span> <span word="news">news</span> <span word="that">that</span> <span word="our">our</span> <span word="team">team</span> <span word="won">won</span>.(<span word="that">that</span>引导同位语从句)</p><p>②<span word="The">The</span> <span word="news">news</span> <span word="that">that</span> / <span word="which">which</span> <span word="he">he</span> <span word="told">told</span> <span word="me">me</span> <span word="was">was</span> <span word="very">very</span> <span word="exciting">exciting</span>.(<span word="that">that</span>引导定语从句，在从句中作宾语)</p><p>2.在<span word="no">no</span> <span word="idea">idea</span>, <span word="question">question</span>, <span word="problem">problem</span>等后可用<span word="wh">wh</span>-疑问词引导同位语从句，<span word="if">if</span>不引导同位语从句。</p><p><span word="I">I</span> <span word="have">have</span> <span word="no">no</span> <span word="idea">idea</span> <span word="where">where</span> <span word="he">he</span> <span word="has">has</span> <span word="gone">gone</span>. <span word="i">i</span> <span word="have">have</span> <span word="no">no</span> <span word="idea">idea</span> <span word="what">what</span> <span word="he">he</span> <span word="said">said</span>.</p><p>3.辨析:引导名词性从句时<span word="what">what</span>与<span word="whatever">whatever</span>, <span word="who">who</span>与<span word="whoever">whoever</span>的区别：</p>
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