关于独立主格，我们一定要谨记，独立主格就是“句子中充当状语成分的简单主谓结构”。它是一个带有自己的主语的状语从句。其形式多为“名词/名词短语/代词+不定式/ing分词/ed分词/形容词/副词/介词短语”，而今天我要给大家带来的是名词/名词短语/代词+ing分词的情况。
独立主格之非谓语动词为现在分词，形式：名词/代词+动词的ing形式。表示正要发生的动作。
We shall have a picnic tomorrow, weather permitting. 明天天气好的话，我们就去野炊。
The teacher being late, we go home. 老师迟到了，我们就回家了
His mother being busy, he has to go home early to do housework. 他妈妈很忙，他得早点回家做家务。
Summer holiday coming, I am planning to how to relax myself. 暑假就要来了，我正在计划着暑假怎么玩。
There being no bus, we had to walk home. 由于没有公共汽车，我们只好走回家。
The girl staring at him, he didn't know what to say. 姑娘两眼望着他,他不知道说什么好.
The sport meeting being over, we go for a movie. 运动会结束后，我们就去看电影。
He being back, we’d better buy him a present. 他就要回去了，我们还是给他买个礼物吧。
My classmate being ill, I send him homework. 我同学生病了，我给他送家庭作业去。