英语专四考试语法知识点总结之复合句(3)
<p> 复合句副词性从句</p><p> 副词在句中起状语作用，故如果起状语作用的部分为一个句子，那么该句便是副词性从句，也称状语从句。状语从句可细分为：时间、地点、条件、原因、让步、目的、结果、比较、方式等。</p><p> 状语从句的测试重点为：考查考生对主从句之间逻辑意义关系的把握，看其是否能选择正确的从属连词。</p><p> 1.条件状语从句的常考知识点</p><p> <span word="if">if</span>与<span word="unless">unless</span>的用法。 <span word="if">if</span>和<span word="unless">unless</span>都是引导条件状语从句的连词，考生应尤其注意<span word="unless">unless</span>的用法，因为它表示反面条件，相当于<span word="if">if</span> <span word="not">not</span>如果不、除非。如：<span word="In">In</span> <span word="debating">debating</span>, <span word="one">one</span> <span word="must">must</span> <span word="correct">correct</span> <span word="the">the</span> <span word="opponents">opponents</span> <span word="facts">facts</span>, <span word="deny">deny</span> <span word="the">the</span> <span word="relevance">relevance</span> <span word="of">of</span> <span word="his">his</span> <span word="proof">proof</span>, <span word="or">or</span> <span word="deny">deny</span> <span word="that">that</span> <span word="what">what</span> <span word="he">he</span> <span word="presents">presents</span> <span word="as">as</span> <span word="proof">proof</span>, <span word="if">if</span> <span word="relevant">relevant</span>, <span word="is">is</span> <span word="sufficient">sufficient</span>.</p><p> 复合连词<span word="as">as</span> <span word="long">long</span> <span word="as">as</span>，<span word="so">so</span> <span word="long">long</span> <span word="as">as</span>，<span word="as">as</span> <span word="far">far</span> <span word="as">as</span>，<span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span>，<span word="in">in</span> <span word="the">the</span> <span word="event">event</span> <span word="that">that</span>;动词及分词<span word="provided">provided</span>，<span word="providing">providing</span>，<span word="given">given</span> <span word="that">that</span>, <span word="suppose">suppose</span>/<span word="supposing">supposing</span>，<span word="assuming">assuming</span>，<span word="say">say</span>等引导条件状语从句。如：</p><p> <span word="You">You</span> <span word="can">can</span> <span word="arrive">arrive</span> <span word="in">in</span> <span word="Beijing">Beijing</span> <span word="earlier">earlier</span> <span word="for">for</span> <span word="the">the</span> <span word="meeting">meeting</span> <span word="provided">provided</span> <span word="you">you</span> <span word="dont">dont</span> <span word="mind">mind</span> <span word="taking">taking</span> <span word="the">the</span> <span word="night">night</span> <span word="train">train</span>.</p><p> <span word="Assuming">Assuming</span> <span word="he">he</span> <span word="is">is</span> <span word="diligent">diligent</span> <span word="in">in</span> <span word="his">his</span> <span word="studies">studies</span> <span word="at">at</span> <span word="ordinary">ordinary</span> <span word="times">times</span>, <span word="he">he</span> <span word="is">is</span> <span word="sure">sure</span> <span word="to">to</span> <span word="pass">pass</span> <span word="the">the</span> <span word="test">test</span>.</p><p> <span word="In">In</span> <span word="the">the</span> <span word="event">event</span> <span word="that">that</span> <span word="she">she</span> <span word="has">has</span> <span word="not">not</span> <span word="been">been</span> <span word="informed">informed</span>, <span word="I">I</span> <span word="will">will</span> <span word="tell">tell</span> <span word="her">her</span>.</p><p> <span word="You">You</span> <span word="can">can</span> <span word="go">go</span> <span word="swimming">swimming</span> <span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span> <span word="you">you</span> <span word="dont">dont</span> <span word="go">go</span> <span word="too">too</span> <span word="far">far</span> <span word="from">from</span> <span word="the">the</span> <span word="river">river</span> <span word="bank">bank</span>.</p>
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