英语语法名词性从句知识点：理解引导名词性从句的what
<p> 【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。</p><p> 应如何理解引导名词性从句的<span word="what">what</span>呢?它还是表示什么吗?请看题：</p><p> __________ <span word="he">he</span> <span word="said">said</span> <span word="at">at</span> <span word="the">the</span> <span word="meeting">meeting</span> <span word="astonished">astonished</span> <span word="everyone">everyone</span> <span word="present">present</span>.</p><p> <span word="A">A</span>. <span word="What">What</span> <span word="B">B</span>. <span word="That">That</span> <span word="C">C</span>. <span word="If">If</span> <span word="D">D</span>. <span word="Whether">Whether</span></p><p> 分析：此题应选 <span word="A">A</span>。选项 <span word="C">C</span>(<span word="if">if</span>) 显然不能选，因为 <span word="if">if</span> 通常不能引导主语从句;选项 <span word="B">B</span>(<span word="that">that</span>) 和 <span word="D">D</span>(<span word="whether">whether</span>) 虽然都可以引导主语从句，但两者除了意思不合题意外，还有它们在主语从句中都不充当句子成分，而此句中的 <span word="he">he</span> <span word="said">said</span> 缺宾语。</p><p> 在名词性从句中，<span word="what">what</span> 根据情况不同，可能有两方面的用法和意思：</p><p> 1. 用作连接代词，表示什么(由疑问词变来)。如：</p><p> <span word="I">I</span> <span word="dont">dont</span> <span word="know">know</span> <span word="what">what</span> <span word="he">he</span> <span word="gave">gave</span> <span word="her">her</span>. 我不知道他给了她什么。</p><p> <span word="What">What</span> <span word="he">he</span> <span word="will">will</span> <span word="say">say</span> <span word="at">at</span> <span word="the">the</span> <span word="meeting">meeting</span> <span word="is">is</span> <span word="not">not</span> <span word="known">known</span> <span word="to">to</span> <span word="us">us</span>. 他在会上将说些什么，我们还不知道。</p><p> 2. 表示所的(东西)，在结构上相当于一个名词加一个定语从句(所以有人称这样用的<span word="what">what</span> 为关系代词型的<span word="what">what</span>)。如：</p><p> ■把你买的东西拿给我看。</p><p> <span word="Show">Show</span> <span word="me">me</span> <span word="what">what</span> <span word="you">you</span> <span word="bought">bought</span>.</p>
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