Respuesta :
The fourth principal part, as the perfect passive participle, is an adjective. Usually just the masculine nominative singular is given. The complete forms are: -us, -a, -um.
N.B.: intransitive verbs do not have a regular 4th principal part (because they can’t be made passive); this includes the verbs that take a dative (noceō, pāreō, etc.)
Some are listed as –tum/-sum, which is the supine.
Some have forms in -tūrus/-sūrus (e.g. sum – futūrus; veniō – ventūrus; fugiō – fugitūrus), which is the future active participle
Some have no fourth form: (e.g. timeō – –; noceō —)
Answer:
There are a few different uses for the fourth principle part. It is used to form passive verbs (both indicative and subjunctive)
Explanation:
