1626. The future perfect indicative expresses completed future action:
as,
#scrīpserō#, _I shall have written_, or _I will have written_. The
future perfect is very common in Latin, particularly in protasis with a
relative, with #cum#, #ubī̆#, &c., with #antequam# or #priusquam#, with
#ut (... ita)#, _as (... so)_, or with #sī#, to express action anterior
in time to a future; in English, this future perfect is usually
represented by a loose present or perfect: as, #quicquid fēceris,
adprobābō#, _Fam._ 3, 3, 2, _whatever you do, I shall think right_.
Examples will be given further on, in speaking of the complex sentence.
1627. It may be mentioned here that the future perfect in protasis and
apodosis both denotes two actions occurring at one and the same time;
these actions are usually identical: as,
#quī Antōnium oppresserit, is hoc bellum taeterrimum cōnfēcerit#, _Fam._
10, 19, 2, _the man that puts down Antony will put an end to this cruel
war_, i.e. putting down Antony will be ending the war. #respīrārō, sī tē
vīderō#, _Att._ 2, 24, 5, _I shall take breath again, if I set eyes on
you_.
1628. The future perfect sometimes denotes a future resulting state: as,
#molestus certē e͡i fuerō#, T. _Andr._ 641, _at all events I shall have
proved a bane to him_. #meum rē̆ī pūblicae atque imperātōrī officium
praestiterō#, 4, 25, 3, _I will have my duty all done to country and
commander too_.
1629. The future perfect is sometimes used to express rapidity of future
action, often with the implication of assurance, promise, or threat: as,
#abierō#, Pl. _Most._ 590, _I’ll instantly be gone_. #iam hūc revēnerō#,
Pl. _MG._ 863, _B._ 1066, _I’ll be back here again forthwith_. #prīmus
impetus castra cēperit#, L. 25, 38, 17, _the first rush will see the
camp carried_.
1630. The future perfect often denotes action postponed to a more
convenient season, or thrown upon another person.
Often thus with #post#, #aliās#, and particularly #mox#: as, #vōbīs post
nārrāverō#, Pl. _Ps._ 721, _I’ll tell you by and by_, i.e. I won’t tell
you now. #ad frātrem mox īerō#, Pl. _Cap._ 194, _I’ll to my brother’s by
and by_, i.e. not yet. #fuerit ista eius dēlīberātiō#, L. 1, 23, 8,
_that is a question for him to settle_, i.e. not me. Especially
#vīderō#: as, #quae fuerit causa, mox vīderō#, _Fin._ 1, 35, _what the
reason was, I won’t consider now_. #rēctē secusne aliās vīderimus#,
_Ac._ 2, 135, _whether right or not, we will consider some other time_,
i.e. never. #vōs vīderitis#, L. 1, 58, 10, _that is a question for you_,
i.e. not me.
1631. The future perfect sometimes denotes action which will have
occurred while something else takes place: as,
#nōn erō vōbīs morae: tībīcen vōs intereā hīc dēlectāverit#, Pl. _Ps._
573^a, _I will not keep you long; meantime the piper will have
entertained you here_. #tū invītā mulierēs, ego accīverō puerōs#, _Att._
5, 1, 3, _do you, sir, invite the ladies, and I will meantime have
fetched the children_.
1632. The future perfect is often not perceptibly different from the
future, especially in the first person singular in old Latin: as,
#ego mihī prōvīderō#, Pl. _Most._ 526, _I’ll look out for myself_. #erōs
in obsidiōne linquet, inimīcūm animōs auxerit#, Pl. _As._ 280, _he’ll
leave his owners in a state of siege, he’ll swell the courage of the
enemy_. Similarly Cicero, in the protases #sī potuerō#, #sī voluerō#,
#sī licuerit#, #sī placuerit#.
[Erratum:
1630 ... not yet. #fuerit ista eius dēlīberātiō#
. invisible]
THE FUTURE ACTIVE PARTICIPLE WITH #sum#.
1633. The future active participle combined with the tenses of #sum#
expresses action impending, resolved on, or destined, at the time
indicated by the tense of the verb: as,
#cum hōc equite pugnātūrī estis#, L. 21, 40, 10, _with this kind of
cavalry are you going to fight_. #bellum scrīptūrus sum, quod populus
Rōmānus cum Iugurthā gessit#, Sall. _I._ 5, 1, _I purpose to write the
history of the war that the people of Rome carried on with Jugurtha_.
#fīet illud, quod futūrum est#, _Div._ 2, 21, _whatever is destined to
be, will be_. #Delphōs petiīt, ubī̆ columnās, quibus impositūrī statuās
rēgis Perseī fuerant, suīs statuīs dēstināvit#, L. 45, 27, 6, _he went
to Delphi, where he appropriated for his own statues the pillars on
which they had intended to put statues of king Perses_.