2012考研必备：考研英语语法精要(51)
十六、省略1.形容词性(定语)从句关系代词的省略
(1)that, which 引导定语从句并在从句中做宾语时，可以省略。
(2)that引导定语从句并且从句是there be句型时，可以省略。如：
No one would have the time to read or listen to an account of everything there is going on in the world.
2.副词性(状语)从句的省略
(1)虚拟语气句省略条件连词if，从句采用倒装结构。如：
Had it not been for the timely investment from the general public, our company would not be so thriving as it is.
(2)由although, as if, if, no matter + wh-, once, though, unless, until, when, where, whether, while等连词引导的表示时间、地点、条件、让步、方式的状语从句，可省略主语和助动词be,保留ing分词、ed分词或表语。这样省略的条件是：●从句中被省略的主语必须与主句的主语一致；●谓语动词必须含有be；●从句必须与主语和b
e动词一起省去，不可只省略主语而保留整个谓语，也不可只保留主语而省略谓语。如：
Though raised in San Francisco, Dave Mitchell had always preferred to record the plain facts of small-town life.
Although born in Chicago, the author is most famous for his stories about New York City.
One should never lose one’s heart when confronted with temporary difficulties.
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