状语从句知识点总结：条件状语从句学习指导
<p>【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。</p><p>条件状语从句就是在复合句中表示主句动作发生条件的状语从句。引导条件状语从句最经常用的连词是<span word="if">if</span>，它的意思是如果除此之外，还有其他一些连词，它们也多少含有如果的意思，也可用于引导条件状语从句。</p><p>1. 用<span word="if">if</span>引导：<span word="if">if</span>意为如果。如：</p><p><span word="You">You</span> <span word="cant">cant</span> <span word="take">take</span> <span word="photographs">photographs</span> <span word="if">if</span> <span word="the">the</span> <span word="light">light</span> <span word="is">is</span> <span word="bad">bad</span>. 光线不足，就无法拍照。</p><p><span word="If">If</span> <span word="you">you</span> <span word="cheat">cheat</span> <span word="in">in</span> <span word="the">the</span> <span word="exam">exam</span> <span word="youll">youll</span> <span word="never">never</span> <span word="get">get</span> <span word="away">away</span> <span word="with">with</span> <span word="it">it</span>. 考试作弊必予追究。</p><p>2. 用<span word="unless">unless</span>引导：<span word="unless">unless</span>的意思是如果不除非。如：</p><p><span word="Dont">Dont</span> <span word="act">act</span> <span word="unless">unless</span> <span word="youre">youre</span> <span word="certain">certain</span>. 没有把握就不要做。</p><p><span word="Unless">Unless</span> <span word="you">you</span> <span word="go">go</span> <span word="at">at</span> <span word="once">once</span> <span word="you">you</span> <span word="will">will</span> <span word="be">be</span> <span word="late">late</span>. 如果你不马上走，就会迟到的。</p><p>3. 用<span word="as">as</span> [<span word="so">so</span>] <span word="long">long</span> <span word="as">as</span>引导：<span word="as">as</span> [<span word="so">so</span>] <span word="long">long</span> <span word="as">as</span>的意思是如果只要。如：</p><p><span word="Ill">Ill</span> <span word="remember">remember</span> <span word="that">that</span> <span word="day">day</span> <span word="as">as</span> <span word="long">long</span> <span word="as">as</span> <span word="I">I</span> <span word="live">live</span>. 只要我活着，我就不会忘记那个日子。</p><p><span word="You">You</span> <span word="may">may</span> <span word="take">take</span> <span word="my">my</span> <span word="dictionary">dictionary</span> <span word="as">as</span> <span word="long">long</span> <span word="as">as</span> <span word="you">you</span> <span word="dont">dont</span> <span word="keep">keep</span> <span word="it">it</span> <span word="too">too</span> <span word="long">long</span>. 只要使用时间不太长，你可以把我的词典拿去。</p><p>4. 用<span word="in">in</span> <span word="case">case</span>引导：<span word="in">in</span> <span word="case">case</span>用连词引导条件状语从句时，其意为如果万一。如：</p>
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