1）独立主格结构的逻辑主语与句子的主语不同，它独立存在。
2）名词或代词与后面的分词，形容词，副词，不定式，介词等是主谓关系或动宾关系。
3）独立主格结构一般有逗号与主句分开。
举例：
The test finished, we began our holiday.
= When the test was finished, we began our holiday.
考试结束了，我们开始放假。
The president assassinated, the whole country was in deep sorrow.
= After the president was assassinated, the whole country was in deep sorrow.
总统被谋杀了，举国上下沉浸在悲哀之中。
Weather permitting, we are going to visit you tomorrow.
如果天气允许，我们明天去看你。
This done, we went home.
工作完成后，我们才回家。
The meeting gone over, everyone tired to go home earlier.
会议结束后，每个人都想早点回家。
He came into the room,his ears red with cold.
他回到了房子里，耳朵冻坏了。
He came out of the library,a large book under his arm.
他夹着本厚书，走出了图书馆
注：独立主格结构有时可在其前加上介词with。
如：
Don’t sleep with the windows open.别开着窗睡觉。
He was lying on the bed with all his clothes on.他穿着衣服躺在床上。
She came in with a book in her hand.她手里拿着一本书走了进来。
He fell asleep with the lamp burning.他没熄灯就睡着了。
I won’t be able to go on holiday with my mother being ill.因为妈妈有病，我无法去度假。
He sat there with his eyes closed.他闭目坐在那儿。
All the afternoon he worked with the door locked.整个下午他都锁着门在房里工作。
I can’t go out with all these clothes to wash.要洗这些衣服，我无法出门了。
特殊
当独立主格与主句主语不同时可有：eg:We walking through the garden,the flowers are beautiful.
