条件状语从句
<p> 连接词主要有 <span word="if">if</span>, <span word="unless">unless</span>, <span word="as">as</span>/<span word="so">so</span> <span word="long">long</span> <span word="as">as</span>, <span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span> 等。.</p><p> <span word="if">if</span> 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。</p><p> <span word="unless">unless</span> = <span word="if">if</span> <span word="not">not</span>. </p><p> <span word="Let">Let</span>’<span word="s">s</span> <span word="go">go</span> <span word="out">out</span> <span word="for">for</span> <span word="a">a</span> <span word="walk">walk</span> <span word="unless">unless</span> <span word="you">you</span> <span word="are">are</span> <span word="too">too</span> <span word="tired">tired</span>.</p><p> <span word="If">If</span> <span word="you">you</span> <span word="are">are</span> <span word="not">not</span> <span word="too">too</span> <span word="tied">tied</span>, <span word="let">let</span>’<span word="s">s</span> <span word="go">go</span> <span word="out">out</span> <span word="for">for</span> <span word="a">a</span> <span word="walk">walk</span>.</p><p>典型例题</p><p><span word="You">You</span> <span word="will">will</span> <span word="be">be</span> <span word="late">late</span> ___ <span word="you">you</span> <span word="leave">leave</span> <span word="immediately">immediately</span>. </p><p><span word="A">A</span>. <span word="unless">unless</span> <span word="B">B</span>. <span word="until">until</span> <span word="C">C</span>. <span word="if">if</span> <span word="D">D</span>. <span word="or">or</span></p><p> 答案<span word="A">A</span>。 句意：除非你立即走，否则你就回迟到的。可转化为 <span word="If">If</span> <span word="you">you</span> <span word="dong">dong</span> <span word="leave">leave</span> <span word="immediately">immediately</span>, <span word="you">you</span> <span word="will">will</span> <span word="be">be</span> <span word="late">late</span>. <span word="B">B</span>、<span word="D">D</span>句意不对，<span word="or">or</span>表转折，句子如为 <span word="You">You</span> <span word="leave">leave</span> <span word="immediately">immediately</span> <span word="or">or</span> <span word="you">you</span> <span word="will">will</span> <span word="be">be</span> <span word="late">late</span>.</p>
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