2013年职称英语考试综合类句型语序技巧(7)
<p> 原因状语从句</p><p> <span word="I">I</span>) <span word="because">because</span>, <span word="since">since</span>,和<span word="as">as</span>引导的原因状语从句</p><p> 1. 其中<span word="because">because</span>语气最强，多表示所述理由是本句重点，强调别人未知的事实，故<span word="because">because</span>引导的从句多放在句末，回答<span word="why">why</span>的问句时，只能用<span word="because">because</span>。</p><p> 在语气上<span word="since">since</span>次之，<span word="as">as</span>最弱。<span word="since">since</span>和<span word="as">as</span>表示的原因，多是已知的既成事实，原因以外的才是叙述的重点，因而两者多用于句首。</p><p> <span word="As">As</span> <span word="it">it</span> <span word="is">is</span> <span word="raining">raining</span>, <span word="lets">lets</span> <span word="stay">stay</span> <span word="indoors">indoors</span>.</p><p> <span word="Since">Since</span> <span word="you">you</span> <span word="have">have</span> <span word="no">no</span> <span word="license">license</span>, <span word="you">you</span> <span word="are">are</span> <span word="not">not</span> <span word="allowed">allowed</span> <span word="to">to</span> <span word="drive">drive</span>.</p><p> 用强调句式强调原因状语从句时，只能用<span word="because">because</span>引导。</p><p> <span word="It">It</span> <span word="was">was</span> <span word="because">because</span> <span word="he">he</span> <span word="was">was</span> <span word="careless">careless</span> <span word="that">that</span> <span word="he">he</span> <span word="failed">failed</span>.</p><p> 在<span word="because">because</span>引导的从句中，如果主句是否定句，而主句和后面的从句之间没有逗号分开，这时<span word="not">not</span> 修饰的是后面的整个从句。</p><p> <span word="The">The</span> <span word="machine">machine</span> <span word="did">did</span> <span word="not">not</span> <span word="stop">stop</span> <span word="because">because</span> <span word="the">the</span> <span word="fuel">fuel</span> <span word="was">was</span> <span word="used">used</span> <span word="up">up</span>.</p><p> 机器停了下来，并不是因为燃料用光了。</p><p> 如果主句和从句间用逗号分开，意思就不同了。</p><p> <span word="I">I</span> <span word="was">was</span> <span word="not">not</span> <span word="kind">kind</span> <span word="to">to</span> <span word="him">him</span>, <span word="because">because</span> <span word="he">he</span> <span word="was">was</span> <span word="rude">rude</span>. 我对他不友好，因为他无礼。</p><p> <span word="II">II</span>) <span word="for">for</span> 和<span word="because">because</span> 的区别</p><p> <span word="because">because</span> 表示因果关系，语气最强;而<span word="for">for</span>引导的是并列句，它只是对前面分句进行解释， 说明推断的理由，并且只能后置。</p>
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