Intransitive verbs, such as "happen," "sleep," or "rise," can be transformed into the passive voice provided that the logical subject is moved to the position of the agent of the passive within formal grammatical constructions.

The passive voice is formed with the appropriate tense of the auxiliary verb "be" followed by the past participle of the main verb, and it is frequently used when the agent is unknown, obvious, or irrelevant.

The transformation of a sentence with two objects (direct and indirect) into the passive voice allows only the direct object to become the subject of the new sentence in standard English grammar structures.

In passive constructions, the preposition "by" must be used to introduce the instrument used in the action, replacing the preposition "with" in all formal registers of English.

The use of the "get-passive" (e.g., "they got arrested") is highly recommended in formal scientific reports to avoid the repetition of the auxiliary verb "be" throughout the text.