involved在这里是过去分词做后置定语,修饰costs的.
有些过去分词,做定语时,要放在被它修饰的名词前面.再如：We must care for the problems related to the people.
involved 在这里做什么成分?
involved在这里是过去分词做后置定语,修饰costs的.
有些过去分词,做定语时,要放在被它修饰的名词前面.再如：We must care for the problems related to the people.