Earlier quoted context omitted.
The app is correct, both of those phrases are passive. Grammatically the passive voice uses the equative verb to be with a past participle of the verb. Both those phrases satisfy that condition. Semantically, the passive voice involves action being done to the subject. Both those phrases also meet that condition. Rearrange them and you'l see: [1] "I was exhuasted" --> "${SUBJECT} exhausted me". The phrase may not see…
> "${SUBJECT} exhausted me" I don't think that a correct analysis of the sentence. The exhausted is an adjective, similar to I am tired , but saying "Something tired me" would have a totally different meaning, because it's a different, unrelated sentence. ("I am covered in green paint." also doesn't seem like it's passive voice, but maybe I'm wrong.) As far as I can tell, "our work here is done" is indeed passive voi…
> The term ‘adjectival passive’ is often applied (perhaps not very felicitously) to active clauses with predicative adjective phrases in which the adjective derives from the past participle of a verb and has a passive-like meaning. There is frequently an ambiguity between be passives and adjectival ones. For example, The door was locked is ambiguous: as a be passive it says that at a particular time someone took the action of locking the door, and as an adjectival passive it says that during some past time period the door was in its locked state. Since the complement in this kind of clause is an adjective phrase, verbs other than be can be used (The door seemed locked, as far as I could tell), and so can adjectives derived with the negative prefix un- (The island was uninhabited by humans).