It being pretty late,成分怎么分析It being pretty late,they picked up everything for the picnic and headed home.为什么用It being

分类: 作业答案 • 2022-06-23 20:04:21

问题描述：

It being pretty late,成分怎么分析
It being pretty late,they picked up everything for the picnic and headed home.为什么用It being

答

这是一个独立主格结构,做原因状语,it 是独立主格结构中的主语,being pretty late是谓语.
因为天已经很晚了,他们收拾好野餐的所有东西,回家了.