1）獨(dú)立主格結(jié)構(gòu)的邏輯主語(yǔ)與句子的主語(yǔ)不同，它獨(dú)立存在。
　　2）名詞或代詞與后面的分詞，形容詞，副詞，不定 式，介詞等是主謂關(guān)系。
 

　　3）獨(dú)立主格結(jié)構(gòu)一般有逗號(hào)與主句分開(kāi)。
舉例：
　　the test finished, we began our holiday.
　= when the test was finished, we began our holiday.
　　考試結(jié)束了，我們開(kāi)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.
　　總統(tǒng)被謀殺了，舉國(guó)上下沉浸在悲哀之中。

　　weather permitting, we are going to visit you tomorrow.　
　　如果天氣允許，我們明天去看你。
this done, we went home.　　　
　　工作完成后，我們才回家。

　　the meeting gone over, everyone tired to go home earlier.　
　　會(huì)議結(jié)束后，每個(gè)人都想早點(diǎn)回家。

　　he came into the room, his ears red with cold.
他回到了房子里，耳朵凍壞了。
　　
　　he came out of the library, a large book under his arm.
　他夾著本厚書(shū)，走出了圖書(shū)館