关于英语独立主格结构句子的使用
独立主格结构指带主语的动词分词、介词、或副词词组。 何谓独立主格结构? 它是指与主语之间无任何语法关系的`名词或代词加上一个分词的结构。它不修饰单个的词，而修饰整个句子。
独立主格结构可位于句子的任何部位。它构成一个单独实体，并具有如下两种功能：
(1) 解释原因或情景
2) 提供主句中重点部分的相关细节。 例 Freud distinguished three kinds of anxiety, each arising from a different source of perceived danger. "each" 是独立主格结构，"arising from"是动词短语。注意这个独立主格结构是一个"干巴巴"的句子。通过改变动词形式，它的面貌可焕然一新：Each arises from a different source of perceived danger.
再看以下例句 Before: His nose was running and his hands were shaking. He left the theater like that. Interesting: His nose running and his hands shaking, he left the theater.
Before: He is known for his bad temper, so I fear the encounter. Interesting: I fear the encounter, his temper being what it is.
Plain: If the weather is favorable tomorrow, we will spend the entire day climbing Huang Shan.
Good: Weather permitting, we will spend the entire day tomorrow climbing Huang Shan.
Plain: Let’s pray that the Southeast Asian economy will soon return to normal.
Good: The Southeast Asian economy, God willing, will soon return to normal.
Plain: Early radio reports exaggerated the success of the raid on the Embassy. Some even indicated that the Vietcong had occupied several floors of the building. Better: Early radio reports exaggerated the success of the raid on the Embassy, some even indicating that the Vietcong had occupied several floors of the building.
Plain: Even though the drug controversy was still festering around him, in the end, defending Australian Open champion Petr Korda walked away with a salute to a cheering crowd. Better: In the end, defending Australian Open champion Petr Korda, the drug controversy around him still festering, walked away with a salute to a cheering crowd.
有些短语在语法上可与它所在句中的其它成分分离。这种结构不修饰句子的任何一个词，而修饰句子的整体意思。
分词连同它所修饰的名词或代词可构成独立主格结构。
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