386 of the most frequently used irregular verbs in the Latin language with all four principal parts. These verbs belong to the 4th Conjugation: (audio, audire, audivi, auditus). Note that nearly all of these verbs may show an ending other than -IVI in the perfect. We thus find "audii" as well as "audivi." Note also that the last four verbs of the audio are used only in the present, imperfect, and future.

386 of the most frequently used irregular verbs in the Latin language with all four principal parts. These verbs belong to the 3rd Conjugation: (nascor, nasci, natus sum). Note that these verbs are passive in form but active in sense. Note also that the last five verbs of the audio are semi-deponents (gaudeo, gaudere, gavisus sum). As you will hear, I have decided to go against convention and not include the final "sum" for the third principal part. Just remember to add it mentally yourself.

386 of the most frequently used irregular verbs in the Latin language with all four principal parts. These verbs belong to the 3rd Conjugation: (nosco, noscere, novi, notus). Note that the PRESENT ends in -SCO, which will often express either the beginning of an action or the action in progress. This is why NOVISSE means "to know," whereas NOSCERE means "to become acquainted with" or "to learn," the process that precedes knowledge.