非谓语动词用法精讲
<p> 概述</p><p> 在大学英语四六级考试的 词汇 和语法部分中,年年必考的一项语法就是非谓语动词(<span word="Non">Non</span>-<span word="finite">finite</span> <span word="Verb">Verb</span>)。</p><p> 非谓语动词分为三类:不定式(<span word="infinitive">infinitive</span>)、动名词(<span word="gerund">gerund</span>)和分词(<span word="participle">participle</span>)。其特点是:</p><p> 1. 不定式、动名词和分词可以做很多句子成分,但就是不能单独做谓语,这也是它们被称为非谓语动词的原因。</p><p> 2. 它们具有各种形态:原形、主动态、被动态、进行态和完成态。</p><p> 3. 不定式和动名词可以做主语、宾语、表语、补语等。但不管起什么作用,它们都具有动词的功能,但无语法上的动词性质,这一点可以通过它们不受主语的人称和数的限制体现出来。</p><p> 4. 分词起形容词和副词作用,可做表语、定语、状语和复合结构中的复合宾语,但不能做主语和宾语。它也不受主语人称和数的限制。</p><p> 不定式</p><p> 1.结构</p><p> 不定式的主动态是<span word="to">to</span> <span word="do">do</span>,其否定式是<span word="not">not</span> <span word="to">to</span> <span word="do">do</span>,被动态是<span word="to">to</span> <span word="be">be</span> <span word="done">done</span>,进行态是<span word="to">to</span> <span word="be">be</span> <span word="doing">doing</span>,完成态是<span word="to">to</span> <span word="have">have</span> <span word="done">done</span>.</p><p> 例:1996年6月四级第24题</p><p> <span word="Sir">Sir</span> <span word="Denis">Denis</span>, <span word="who">who</span> <span word="is">is</span> 78, <span word="has">has</span> <span word="made">made</span> <span word="it">it</span> <span word="known">known</span> <span word="that">that</span> <span word="much">much</span> <span word="of">of</span> <span word="his">his</span> <span word="collection">collection</span> ______ <span word="to">to</span> <span word="the">the</span> <span word="nation">nation</span>.</p><p> <span word="A">A</span>) <span word="has">has</span> <span word="left">left</span> <span word="B">B</span>) <span word="is">is</span> <span word="to">to</span> <span word="leave">leave</span> <span word="C">C</span>) <span word="leaves">leaves</span> <span word="D">D</span>) <span word="is">is</span> <span word="to">to</span> <span word="be">be</span> <span word="left">left</span></p>
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