He looked out of the window,surveying the landscape of the countryside.这是何句型?为何有两种时态请详解语法,最好还能列举几个类似的句子.分不多,聊表谢意.

问题描述:

He looked out of the window,surveying the landscape of the countryside.这是何句型?为何有两种时态
请详解语法,最好还能列举几个类似的句子.分不多,聊表谢意.

这里,主句是he looked out of the window 现在分词作伴随状态。他从窗户向外看,观察着乡村的地形。
e.g. he walked into the room, looking at the blackboard.

现在分词作伴随状态
He got up early , doing more excises .