2013年12月英語四級作文必備知識訓(xùn)練(5)
本文為大家歸納整理了英語四級作文必備知識訓(xùn)練，希望同學(xué)們多加練習(xí)，取得優(yōu)異的四級成績。
獨(dú)立主格結(jié)構(gòu)
獨(dú)立主格結(jié)構(gòu)指帶主語的動詞分詞、介詞、或副詞詞組。 何謂獨(dú)立主格結(jié)構(gòu)?
它是指與主語之間無任何語法關(guān)系的名詞或代詞加上一個分詞的結(jié)構(gòu)。它不修飾單個的詞，而修飾整個句子。獨(dú)立主格結(jié)構(gòu)可位于句子的任何部位。它構(gòu)成一個單獨(dú)實(shí)體，并具有如下兩種功能：(1) 解釋原因或情景 (2) 提供主句中重點(diǎn)部分的相關(guān)細(xì)節(jié)。
例 Freud distinguished three kinds of anxiety, each arising from a different source of perceived danger.
"each" 是獨(dú)立主格結(jié)構(gòu)，"arising from"是動詞短語。注意這個獨(dú)立主格結(jié)構(gòu)是一個"干巴巴"的句子。通過改變動詞形式，它的面貌可煥然一新：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.
有些短語在語法上可與它所在句中的其它成分分離。這種結(jié)構(gòu)不修飾句子的任何一個詞，而修飾句子的整體意思。
分詞連同它所修飾的名詞或代詞可構(gòu)成獨(dú)立主格結(jié)構(gòu)。同位語和插入語有時也被認(rèn)為是獨(dú)立主格結(jié)構(gòu)
有用句型
During the early years of the Cultural Revolution, dried mushrooms on dinner tables were an unheard-of luxury, and pork chops unthinkable.
We see Van Gogh in the role of prophet in "Self Portrait," his emaciated, luminous head with its burning eyes set off against a whirlpool of darkness.
Professor Wang’s handwriting was precise, fussy, spidery, his notepad pale mauve.
(主語+系動詞+形容詞, +獨(dú)立主格結(jié)構(gòu)<主語+形容詞>)
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