状语从句知识点总结：英语条件状语从句的用法及有关说明
<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>引导条件状语从句的从属连词有<span word="if">if</span>, <span word="unless">unless</span> (=<span word="ifnot">ifnot</span>如果不，除非), <span word="as">as</span>/<span word="so">so</span> <span word="long">long</span> <span word="as">as</span>(只要), <span word="while">while</span>(=<span word="as">as</span> <span word="long">long</span> <span word="as">as</span>只要), <span word="supposing">supposing</span> (<span word="that">that</span>)/<span word="provided">provided</span> /<span word="providing">providing</span> (<span word="that">that</span>)(假如), <span word="in">in</span> <span word="case">case</span>(假使), <span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span>(在的条件下)等。如：</p><p><span word="You">You</span> <span word="can">can</span> <span word="learn">learn</span> <span word="anything">anything</span> <span word="so">so</span> <span word="long">long</span> <span word="as">as</span> <span word="you">you</span> <span word="set">set</span> <span word="your">your</span> <span word="mind">mind</span> <span word="to">to</span> <span word="learn">learn</span> <span word="it">it</span>. 用心学本领，总能学到手。</p><p><span word="I">I</span> <span word="will">will</span> <span word="go">go</span> <span word="there">there</span> <span word="tomorrow">tomorrow</span> <span word="unless">unless</span> <span word="it">it</span> <span word="rains">rains</span>.(=<span word="if">if</span> <span word="it">it</span> <span word="doesnt">doesnt</span> <span word="rain">rain</span>)除非下雨，否则我明天要去那儿。</p><p><span word="He">He</span> <span word="will">will</span> <span word="do">do</span> <span word="the">the</span> <span word="work">work</span> <span word="providing">providing</span> <span word="you">you</span> <span word="pay">pay</span> <span word="him">him</span>. 如果你能付费，他可以做这工作。</p><p><span word="In">In</span> <span word="case">case</span> <span word="l">l</span> <span word="forget">forget</span>，<span word="please">please</span> <span word="remind">remind</span> <span word="me">me</span> <span word="about">about</span> <span word="it">it</span>. 如果我忘了，请提醒我。</p><p><span word="Well">Well</span> <span word="let">let</span> <span word="you">you</span> <span word="use">use</span> <span word="the">the</span> <span word="room">room</span> <span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span> <span word="you">you</span> <span word="keep">keep</span> <span word="it">it</span> <span word="clean">clean</span> <span word="and">and</span> <span word="tidy">tidy</span>. 我们可以让你使用这个房间，条件是你把它保持整洁。</p><p>注：条件状语从句和时间状语从句一样，从句的谓语动词不能用一般将来时态、过去将来时态或将来完成时，而要用相应的一般现在时、一般过去时和现在完成时态来替代。又如：</p><p><span word="Tell">Tell</span> <span word="me">me</span> <span word="in">in</span> <span word="case">case</span> <span word="you">you</span> <span word="get">get</span> <span word="into">into</span> <span word="difficulty">difficulty</span>. 遇到困难请告诉我。</p><p><span word="Supposing">Supposing</span> <span word="he">he</span> <span word="does">does</span> <span word="not">not</span> <span word="come">come</span>, <span word="shall">shall</span> <span word="we">we</span> <span word="go">go</span> <span word="without">without</span> <span word="him">him</span>? 如果他不来，是不是不带他去?</p>
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