来源：学生作业帮 编辑：作业帮 时间：2019/07/21 08:21:18
如果非谓语的逻辑主语与句子不是相同的,则要用从句或分词独立主格结构来表示.独立主格结构的构成:主语+ to do / done/ doing / (being) +adj / adv/ prep / n.例如：
Here are the first two books,the third to come out next month.
She appeared in front of us,her face bright with joy.
\x05Weather permitting,we will go to the Center Park.或:If weather permits,we ….
Her mother (being) ill,Mary stays at home looking after her.