是定语.
某些由过去分词转化而来的形容词通常后置
这类形容词主要有concerned(有关的),discussed(讨论过的),included(包括的),involved(牵涉到的),left(剩下的),needed(所需的)等,如：
The questions concerned/ involved have been all solved.
The problem discussed is very important.
The expenses are $200,postage included.
We had only three days left.
He took all things needed for the journey.