独立主格结构是一个独立主格的名词或代词（作为逻辑主格），加上一个分词、形容词、副词、不定式、介词短语。其作用相当于状语，多用来表示行为、方式或伴随的情况，有时也用来表示时间和条件。这种结构多用在书面语中。
一、几种常见的独立主格结构形式
1.名词（或代词）＋现在分词（或过去分词）。如：
1）The moon appearing,they decided to go on with theirjouney.
2）Good-bye said,he went home.
2.名词（或代词）＋形容词。如：
3）The weather(being)hot,we all went swimming.
3.名词（或代词）＋不定式。如：
4）Some of the money to be paid by the thief, the police went away.
4.名词（或代词）＋介词短语。如：
5）He climbed in,sword in hand.
5.名词（或代词）＋副词。如：
6）The meeting(being)over, we left the room.

with复合结构 与 独立主格结构
它们都可以在句中作原因状语,伴随状况状语,条件状语,时间状语或结果状语用,一般也可以相互转换.虽然它们的语法功能和意义相同,但其结构形式和名称却不相同.
with复合结构的模式是:
with+名词/代词+分词/形容词/副词/不定式/介词短语
独立主格结构的模式是:
主格名词/代词+分词/形容词/副词/不定式/介词短语
一,作时间状语
1,With winter coming on, the trees turn yellow and some birds fly south.
=Winter coming on, the trees turn yellow and some birds fly south.
二,作原因状语
1,With the weather terribly cold, we entered the room to warm ourselves.
= The weather terribly cold, we entered the room to warm ourselves.
2,With the key having been lost, she could not enter the room.
= The key having been lost, she could not enter the room.
三,作条件状语
1,With time permitting, we'll visit the Summer Palace.
= Time permitting, we'll visit the Summer Palace.
2,With the car going wrong, we'll have to stop at the foot of the mountain.
= The car going wrong, we'll have to stop at the foot of the mountain.
四,作伴随状语
1,The mother was cleaning the house with her baby playing on the bed.
=The mother was cleaning the house, her baby playing on the bed.
2,Last night I followed him, with a sword in my hand.
= Last night I followed him , sword in hand.
无论with复合结构还是独立主格结构,都不可有动词的谓语形式充当其中的逻辑谓语.如下例中的was就必须去掉:
He sat at the desk reading with a pen was in his right hand.
with复合结构可以作后置定语修饰名词,而独立主格结构则不可作后置定语修饰名词.
Soon she arrived at a park with grass green and flowers in blossom.
= Soon she arrived at a park whose grass was green and whose flowers were in blossom.