It can be an adjective or a verb or adverb
watched
Yes, the word 'watched' is the past tense of the verb 'to watch', an act and therefore an action verb.
no, watched is the past tense form of the verb watch.
The present perfect tense of "watch" is "have watched" or "has watched." For example, "I have watched that movie before."
No. Watched is a verb: something that has been done or can be done. An adverb describes verbs, so it would be 'how' you watched something.
Yes, "has" is a helping verb that is used to form the present perfect tense in English.
It is a verb
watched
No, "watched" is not a preposition. It is a past tense verb or a participle form of the verb "watch." Prepositions are words that show the relationship between a noun or pronoun and another word in the sentence. Examples of prepositions include in, on, at, and by.
Watch is a regular verb so you add -ed to make the past tense = watched
"Watched." When looking for a verb, look for the action.