Are the following two sentences grammatically correct?
(1) You have currently been placed on a waiting list.
(2) More people are currently displaced within their own countries than ever recorded before due to conflict.
What determines the past participle is a verb as in “placed” and the other is an adjective as in “displaced?” (2) is not passive because it cannot be rewritten to (3) in the active voice.
(3) *The conflict currently displaces more people within their own countries than ever recorded before.
I mix up the two usages all the time. How can I tell if I should use the verbal usage of past participles to express the current state as in HAVE BEEN PAST PARTICIPLE or if I should use the adjectival usage to express the current state as in IS/ARE PAST PARTICIPLE without HAVE?
