初中英语语法：独立主格
<p> 使用独立主格结构的几点注意</p><p> 1.独立主格与状语从句的转换</p><p> 当状语从句的主语与主句的主语不是指同一个对象时，可用独立主格结构取代状语从句，但不再保留连词。如：</p><p> <span word="Afterclasswasover">Afterclasswasover</span>(=<span word="Classbeingover">Classbeingover</span>/<span word="Classover">Classover</span>),<span word="thestudentssoonlefttheclassroom">thestudentssoonlefttheclassroom</span>.下课后，学生很快离开了教室。</p><p> 2.不能省略<span word="being">being</span>(<span word="havingbeen">havingbeen</span>)的情形</p><p> 在下列两种情况下，独立主格结构中的<span word="being">being</span>(或<span word="havingbeen">havingbeen</span>)不能省略：</p><p> (1)独立主格结构的逻辑主语是代词时。如：</p><p> <span word="ItbeingSunday">ItbeingSunday</span>,<span word="wewenttochurch">wewenttochurch</span>.因为是星期天，我们去了做礼拜。</p><p> (2)在<span word="Therebeing">Therebeing</span>+名词的结构中。如：</p><p> <span word="Therebeingnobus">Therebeingnobus</span>,<span word="wehadtogohomeonfoot">wehadtogohomeonfoot</span>.因为没有公共汽车，所以我们不得不步行回家。</p><p> 3.通常不用物主代词或冠词</p><p> 在名词(或代词)+介词短语构成的独立主格结构中，一般不用形容词性物主代词和冠词。如：</p><p> <span word="MissSmithenteredtheclassroom">MissSmithenteredtheclassroom</span>,<span word="bookinhand">bookinhand</span>.史密斯先生走进了课室，手里拿着一本书。</p><p> 比较<span word="with">with</span>的复合结构：<span word="MissSmithenteredtheclassroom">MissSmithenteredtheclassroom</span>,<span word="withabookinhishand">withabookinhishand</span>.</p><p> 4.独立主格结构没有所有格形式</p><p> <span word="Thechief">Thechief</span>-<span word="editorarriving">editorarriving</span>,<span word="webeganthemeeting">webeganthemeeting</span>.主编来了，我们开始开会。</p>
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