职称英语考试基础知识名词性从句
<p> 职称英语考试基础知识:名词性从句</p><p> 职称英语中名词性从句是在句子中起名词作用的主谓结构，它可以在主从复合句中作主语、宾语、表语、介词的宾语以及同位语。</p><p> 1. 主语从句主语从句可以由连词<span word="that">that</span>，<span word="wh">wh</span>-疑问词或名词性关系词引导。</p><p> ⑴由连词<span word="that">that</span>引导：从句可以位于句首，但常常用形式主语<span word="it">it</span>替代，从句本身则放在主句后面，如：</p><p> <span word="That">That</span> <span word="he">he</span> <span word="will">will</span> <span word="come">come</span> <span word="to">to</span> <span word="the">the</span> <span word="party">party</span> <span word="is">is</span> <span word="certain">certain</span>. <span word="It">It</span> <span word="happened">happened</span> <span word="that">that</span> <span word="the">the</span> <span word="harvest">harvest</span> <span word="was">was</span> <span word="bad">bad</span> <span word="that">that</span> <span word="year">year</span>. <span word="Is">Is</span> <span word="it">it</span> <span word="true">true</span> <span word="that">that</span> <span word="she">she</span> <span word="has">has</span> <span word="never">never</span> <span word="been">been</span> <span word="there">there</span>?</p><p> 通常在口语或非正式文体中，<span word="that">that</span>常可省略，但必须是在用先行词<span word="it">it</span>的情况下，如：</p><p> <span word="Its">Its</span> <span word="a">a</span> <span word="pity">pity</span> <span word="you">you</span> <span word="are">are</span> <span word="leaving">leaving</span>.</p><p> ⑵由<span word="wh">wh</span>-疑问词引导：从句既可以前置，又可以借助于先行词<span word="it">it</span>后置。如：</p><p> <span word="Who">Who</span> <span word="cleaned">cleaned</span> <span word="the">the</span> <span word="meeting">meeting</span> <span word="room">room</span> <span word="is">is</span> <span word="unknown">unknown</span>. <span word="Its">Its</span> <span word="still">still</span> <span word="a">a</span> <span word="question">question</span> <span word="when">when</span> <span word="we">we</span> <span word="shall">shall</span> <span word="have">have</span> <span word="our">our</span> <span word="sports">sports</span> <span word="meet">meet</span>. <span word="It">It</span> <span word="is">is</span> <span word="uncertain">uncertain</span> <span word="whether">whether</span> <span word="he">he</span> <span word="will">will</span> <span word="come">come</span>.注意：在疑问句中，<span word="wh">wh</span>-疑问词所引导的从句不能位于句首，如：</p><p> <span word="Is">Is</span> <span word="it">it</span> <span word="known">known</span> <span word="where">where</span> <span word="she">she</span> <span word="went">went</span>?</p><p> ⑶主语从句也可由名词性关系词引导，这类从句只能位于句首，如：</p><p> <span word="Where">Where</span> <span word="she">she</span> <span word="went">went</span> <span word="was">was</span> <span word="Los">Los</span> <span word="Angeles">Angeles</span>. <span word="What">What</span> <span word="will">will</span> <span word="be">be</span>，<span word="will">will</span> <span word="be">be</span>. <span word="Whomever">Whomever</span> <span word="you">you</span> <span word="invite">invite</span> <span word="will">will</span> <span word="be">be</span> <span word="welcome">welcome</span>.</p><p> 2. 宾语从句</p>
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