a. Instead of the Indicative, Livy and subsequent writers employ the Subjunctive of the Historical tenses in the Protasis to denote repeated action; as,—
sī dīcendō quis diem eximeret, if (ever) anybody consumed a day in pleading; sī quandō adsidēret, if ever he sat by.
4. Where the sense demands it, the Apodosis in conditional sentences of the First Type may be an Imperative or one of the Independent Subjunctives (Hortatory, Deliberative, etc.); as,—
sī hōc crēditis, tacēte, if you believe this, be silent;
sī hōc crēdimus, taceāmus, if we believe this, let us keep silent.
Second Type.—'Should'-'Would' Conditions.
[303]. Here we regularly have the Subjunctive (of the Present or Perfect tense) in both Protasis and Apodosis; as,—
sī hōc dīcās, errēs, or sī hōc dīxerīs, errāverīs, if you should say this, you would be mistaken;
sī velim Hannibalis proelia omnia dēscrībere, diēs mē dēficiat, if I should wish to describe all the battles of Hannibal, time would fail me;
mentiar, sī negem, I should lie, if I should deny it;
haec sī tēcum patria loquātur, nōnne impetrāre dēbeat, if your country should plead thus with you, would she not deserve to obtain her request?
a. The Subjunctive in the Apodosis of conditional sentences of this type is of the Potential variety.
b. Sometimes we find the Indicative in the Apodosis of sentences of the Second Type, where the writer wishes to assert the accomplishment of a result more positively; as,—
aliter sī faciat, nūllam habet auctōritātem, if he should do otherwise, he has no authority.