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GrammarFuture Conditions (Vivid & Less Vivid)
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Future Conditions (Vivid & Less Vivid)
GrammarSyntaxFuture Conditions (Vivid & Less Vivid)

Future Conditions (Vivid & Less Vivid)

A&G §516. a–516. d|4 rules|3 practice questions

Future conditions in Latin come in two flavors, and the difference is one of distance, not grammar. The MORE VIVID future ('if X happens, Y will happen') puts both verbs in the future indicative — the speaker treats the supposition as a real possibility on the horizon.

The LESS VIVID future ('if X should happen, Y would happen') puts both verbs in the present subjunctive — the speaker holds the supposition at arm's length, hypothetically.

English marks the split with verb forms ("will" vs. "should/would"); Latin marks it with mood. The trap on the AP exam: less-vivid present subjunctive looks identical to the present contrary-to-fact, but CTF needs the IMPERFECT subjunctive — same mood, different tense.

Pattern
MORE VIVIDsī + fut. indic. , fut. indic.
LESS VIVIDsī + pres. subj. , pres. subj.
Future Conditions

more vivid = "if X happens, Y will happen"; less vivid = "if X should happen, Y would happen"

Both verbs match: indicative with indicative (more vivid), or subjunctive with subjunctive (less vivid). Don't mix moods unless the writer is shifting viewpoint.

Forms a Future Condition Can Take
1
Pure MORE VIVID — fut. indic. in both clauses
sānābimur, sī volēmus — "we shall be healed if we wish" (Tusc. iii. 13)
critical
2
Pure LESS VIVID — pres. subj. in both clauses
sī quis deus mihi largiātur, valdē recūsem — "if some god should grant me this, I'd refuse" (Cat. M. 83)
critical
3
More vivid with FUTURE PERFECT in protasis (action completed first)
sīn cum potuerō nōn vēnerō, tum erit inimīcus — "but if I shall not have come when I could, then he will be unfriendly" (Att. ix. 2 A. 2)
important
4
Less vivid with PERFECT SUBJUNCTIVE in protasis (action completed first)
sī ā corōnā relictus sim, nōn queam dīcere — "if I should have been deserted by the audience, I should not be able to speak" (Brut. 192)
important
5
More vivid with PRESENT INDICATIVE substituting for the future in protasis
sī vincimus, omnia nōbīs tūta erunt — "if we conquer, all will be safe for us" (Sall. Cat. 58)
common
6
Mixed: pres. subj. protasis + fut. (or pres.) indic. apodosis (viewpoint shift)
sī dīligenter attendāmus, intellegēmus — "if we attend carefully, we shall understand" (Iuv. ii. 44)
common
7
Apodosis in IMPERATIVE — "if X, do Y"
sī mē praecēperit fātum, vōs mandāsse mementō — "if fate cuts me off, remember that I gave this order" (Q. C. ix. 6. 26)
common
8
Apodosis in PASSIVE PERIPHRASTIC (-dus) — necessity
alius fīnis cōnstituendus est, sī . . . dīxerō — "another limit must be set, if I shall first state…" (Lael. 59)
common
9
Apodosis with verb of POSSIBILITY (possum, queō) in less vivid
nōn possum istum accūsāre, sī cupiam — "I cannot accuse him, if I should desire to" (Verr. iv. 87)
common
10
Future condition in INDIRECT DISCOURSE — protasis becomes subjunctive (sequence)
After a primary main verb: protasis fut. indic. → pres. subj.; apodosis fut. indic. → fut. participle + esse. After secondary: → imperf. subj. / -rus + esse.
important

See It In Action

sānābimur, sī volēmus
we shall be healed, if we wish (lit. "if we shall wish")

— Cic. Tusc. iii. 13

Textbook MORE VIVID: future indicative on both sides. English flattens the protasis to "if we wish," but Latin keeps the future tense honest — the wishing hasn't happened yet.

haec sī tēcum patria loquātur, nōnne impetrāre dēbeat
if your country should thus speak with you, ought she not to prevail?

— Cic. Cat. i. 19

Textbook LESS VIVID: present subjunctive on both sides. "Should…would" in English is the giveaway — Cicero is hypothesizing, not predicting.

sī vincimus, omnia nōbīs tūta erunt; sīn metū cesserimus, eadem illa advorsa fīent
if we conquer, all things will be safe for us; but if we yield through fear, those same things will become hostile

— Sall. Cat. 58

Two future tricks in one sentence: a present indicative vincimus substitutes for the future (note 516.a), and cesserimus in the second protasis is future perfect — the yielding must be COMPLETE before the consequence kicks in.

quod sī quis deus mihi largiātur, . . . valdē recūsem
but if some god were to grant me this, I should stoutly refuse

— Cic. Cat. M. 83

Cicero is rejecting a hypothetical gift no god has actually offered — pure less-vivid territory. "Were to grant"…"should refuse" is the standard English mapping for present-subjunctive pairs.

Future Less Vivid vs. Present Contrary-to-Fact

Both use the subjunctive in protasis AND apodosis — the only signal is TENSE. Less vivid uses present; CTF uses imperfect.

Future Less Vivid ("should-would")

hypothetical, not yet decided

sī veniat, gaudeam

if he should come, I would be glad (still possible)

Present Contrary-to-Fact

false right NOW; speaker knows it

sī venīret, gaudērem

if he were coming (but he isn't), I would be glad

Tip: Look at the TENSE of the subjunctive. Present (veniat, gaudeam) → less vivid future. Imperfect (venīret, gaudērem) → present CTF. Same mood, different worlds.

Quick Check

In sī haec patria tēcum loquātur, nōnne impetrāre dēbeat? (Cic. Cat. i. 19), what kind of condition is this and how should the verbs be translated?

Study Tips

  • •Two questions diagnose the form: (1) Future or present time? (2) Indicative or subjunctive? Future + indicative = more vivid. Present + subjunctive = less vivid.
  • •Translate less-vivid as "should…would," not "might" or "could" — the should/would pairing is the standard English signal that Latin used the present subjunctive.
  • •If the action of the si-clause must be COMPLETE before the apodosis, swap the future for the future perfect (more vivid) or the present subjunctive for the perfect subjunctive (less vivid).
  • •Watch for present indicative in the si-clause with a future apodosis — Latin slides into this when the supposition feels especially live (sī vincimus, omnia tūta erunt).

Related Topics

Contrary-to-Fact Conditions

Edited by Baris Yildirim·After Allen & Greenough §§516. a–516. d (1903)

Last updated May 2, 2026·How antiq's grammar pages are made