as if / if though从句用虚拟语气
<p><span word="as">as</span> <span word="if">if</span> (<span word="though">though</span>) 从句用虚拟语气</p><p>&<span word="nbsp">nbsp</span>;</p><p>一、基本用法</p><p>以<span word="as">as</span> <span word="if">if</span> (<span word="as">as</span> <span word="though">though</span>)引导的方式状语从句或表语从句，有时用虚拟语气，若表示与现在事实相反，谓语动词用一般过去时；若表示与过去事实相反，用过去完成时；表示将来的可能性不大，用<span word="would">would</span> (<span word="might">might</span>, <span word="could">could</span>)+动词原形：</p>
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