英语专业四级应试技巧之语法词汇篇8：It的使用
<p> <span word="it">it</span>用来充当形式主语或形式宾语，后面的真正主语或真正宾语通常是不定式结构、动名词或名词性分句。<span word="It">It</span>的这种用法叫作先行<span word="it">it</span>。</p><p> <span word="eg">eg</span>.</p><p> <span word="It">It</span> <span word="is">is</span> <span word="quite">quite</span> <span word="important">important</span> <span word="for">for</span> <span word="us">us</span> <span word="to">to</span> <span word="form">form</span> <span word="a">a</span> <span word="good">good</span> <span word="studying">studying</span> <span word="habit">habit</span>.</p><p> <span word="I">I</span> <span word="think">think</span> <span word="it">it</span> <span word="important">important</span> <span word="to">to</span> <span word="finish">finish</span> <span word="the">the</span> <span word="task">task</span> <span word="in">in</span> <span word="time">time</span>.</p><p> <span word="it">it</span>用来充当形式主语，后置的真正主语往往可以取代先行<span word="it">it</span>的位置，出现在句首。</p><p> <span word="Eg">Eg</span>. <span word="To">To</span> <span word="form">form</span> <span word="a">a</span> <span word="good">good</span> <span word="studying">studying</span> <span word="habit">habit</span> <span word="is">is</span> <span word="quite">quite</span> <span word="important">important</span> <span word="for">for</span> <span word="us">us</span></p><p> 并非所有先行<span word="it">it</span>结构都可转化，下边句子只能作如下转化。</p><p> <span word="eg">eg</span>.</p><p> <span word="It">It</span> <span word="seems">seems</span> <span word="that">that</span> <span word="John">John</span> <span word="is">is</span> <span word="not">not</span> <span word="coming">coming</span> <span word="after">after</span> <span word="all">all</span>.</p><p> <span word="John">John</span> <span word="doesnt">doesnt</span> <span word="seem">seem</span> <span word="to">to</span> <span word="be">be</span> <span word="coming">coming</span> <span word="after">after</span> <span word="all">all</span>.</p><p> <span word="Cleft">Cleft</span> <span word="it">it</span> :</p><p> <span word="Task">Task</span></p><p> 1. 句子的基本结构</p><p> 2 .分裂句的本质</p><p> 3 . 分裂句的结构</p><p> 4 .假拟分裂句</p><p> 句子结构</p><p> 主语+谓语</p><p> 已知信息</p><p> 新信息</p><p> 末端中心</p><p> 末端重心</p><p> <span word="Eg">Eg</span>. <span word="I">I</span> <span word="told">told</span> <span word="him">him</span> <span word="the">the</span> <span word="news">news</span> <span word="yesterday">yesterday</span>.</p><p> 分裂句的本质</p><p> <span word="Eg">Eg</span>. <span word="I">I</span> <span word="told">told</span> <span word="him">him</span> <span word="the">the</span> <span word="news">news</span> <span word="yesterday">yesterday</span>.</p><p> <span word="Eg">Eg</span>. <span word="It">It</span> <span word="is">is</span> <span word="I">I</span> <span word="that">that</span> <span word="told">told</span> <span word="him">him</span> <span word="the">the</span> <span word="news">news</span> <span word="yesterday">yesterday</span></p><p> 分裂<span word="it">it</span></p>
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