英语语法名词性从句知识：表语从句用法详解
<p> 一、表语从句的引导词</p><p> 引导表语从句的词有连词<span word="that">that</span>, <span word="whether">whether</span>，连接代词和连接副词，关系代词型<span word="what">what</span>，以及<span word="as">as</span> <span word="if">if</span>, <span word="as">as</span> <span word="though">though</span>, <span word="because">because</span>等连词。</p><p> 1. 由<span word="that">that</span>引导</p><p> <span word="The">The</span> <span word="fact">fact</span> <span word="is">is</span> <span word="that">that</span> <span word="he">he</span> <span word="doesnt">doesnt</span> <span word="really">really</span> <span word="try">try</span>. 事实是他没有做真正的努力。</p><p> <span word="The">The</span> <span word="trouble">trouble</span> <span word="is">is</span> <span word="that">that</span> <span word="I">I</span> <span word="have">have</span> <span word="lost">lost</span> <span word="his">his</span> <span word="address">address</span>. 麻烦的是我把他的地址丢了。</p><p> <span word="My">My</span> <span word="suggestion">suggestion</span> <span word="is">is</span> <span word="that">that</span> <span word="we">we</span> <span word="should">should</span> <span word="tell">tell</span> <span word="him">him</span>. 我的建议是我们应该告诉他。</p><p> <span word="His">His</span> <span word="sole">sole</span> <span word="requirement">requirement</span> <span word="was">was</span> (<span word="is">is</span>) <span word="that">that</span> <span word="the">the</span> <span word="system">system</span> <span word="work">work</span>. 他唯一的要求是这个制度能起作用。</p><p> <span word="My">My</span> <span word="idea">idea</span> <span word="is">is</span> <span word="that">that</span> <span word="we">we</span> <span word="should">should</span> <span word="start">start</span> <span word="making">making</span> <span word="preparations">preparations</span> <span word="right">right</span> <span word="now">now</span>. 我的意见是我们马上就开始做准备工作。</p><p> 2. 由<span word="whether">whether</span>引导</p><p> <span word="The">The</span> <span word="question">question</span> <span word="is">is</span> <span word="whether">whether</span> <span word="the">the</span> <span word="film">film</span> <span word="is">is</span> <span word="worth">worth</span> <span word="seeing">seeing</span>. 问题是这部电影是否值得看。</p><p> 【注意】<span word="whether">whether</span> 可引导表语从句，但与之同义的<span word="if">if</span>却通常不用于引导表语从句。</p><p> 3. 由连接代词引导</p><p> <span word="You">You</span> <span word="are">are</span> <span word="not">not</span> <span word="who">who</span> <span word="I">I</span> <span word="thought">thought</span> <span word="you">you</span> <span word="were">were</span>. 你已不是我过去所想像的人。</p><p> <span word="The">The</span> <span word="problem">problem</span> <span word="is">is</span> <span word="who">who</span> <span word="we">we</span> <span word="can">can</span> <span word="get">get</span> <span word="to">to</span> <span word="replace">replace</span> <span word="her">her</span>. 问题是我们能找到谁去替换她呢。</p><p> <span word="The">The</span> <span word="question">question</span> <span word="is">is</span> <span word="who">who</span> (<span word="m">m</span>) <span word="we">we</span> <span word="should">should</span> <span word="trust">trust</span>. 问题是我们应当相信谁。</p>
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