求解关于一道语法题疑问

题目

求解关于一道语法题疑问
On Sundays there were a lot of children playing in the park,_________ parents seated together joking.
A.their B.whose C.which D.that
为什么是独立主格结构?seated不是谓语那它做什么成分?独立主格结构的真正谓语是什么?

答案

1.seated不是谓语,这部分完整的谓语应是were seated.their parents seated together joking 这个独立主格结构做On Sundays there were a lot of children playing in the park,的伴随状语.2.独立主格不是句子,这种结...