1. Perfect Tense No difference between Regular
Pluperfect Tense and Irregular Verbs
Future Perfect Tense
For the last three tenses in the Active Voice, the Perfect Stem is
used to conjugate the verb.
Perfect Stem = Third Principal Part - i
voco vocare vocavi vocatus perfect stem = vocav
moneo monere monui monitus perfect stem = monu
sum esse fui futurus perfect stem = fu

2. Rule for the Future Perfect Tense (Page 79)
Rule Translation
Perfect Stem + eri + P.E. (shall/will have) or
Perfect Stem + ero erimus (shall/will have)
eris eritis
erit erint

3. voco vocare vocavi vocatus - call
perfect stem = vocav
1. vocav + eri + o = vocavero I shall have called
2. vocav + eri + s = vocaveris you will have called
3. vocav + eri + t = vocaverit he will have called
1. vocav + eri + mus = vocaverimus we shall have called
2. vocav + eri + tis = vocaveritis you will have called
3. vocav + eri + nt = vocaverint they will have called

4. moneo monere monui monitus - warn
perfect stem = monu
1. monu + eri + o = monuero I shall have warned
2. monu + eri + s = monueris you will have warned
3. monu + eri + t = monuerit he will have warned
1. monu + eri = mus = monuerimus we shall have warned
2. monu + eri + tis = monueritis you will have warned
3. monu + eri + nt = monuerint they will have warned

5. sum esse fui futurus - be
perfect stem = fu
1. fu + eri + o = fuero I shall have been
2. fu + eri + s = fueris you will have been
3. fu + eri + t = fuerit he will have been
1. fu + eri + mus = fuerimus we shall have been
2. fu + eri + tis = fueritis you will have been
3. fu + eri + nt = fuerint they will have been