[1919.] When the action of the protasis was forestalled, or when action conceivable or purpose is expressed, antequam and priusquam regularly introduce the imperfect subjunctive in particular past statements: as,
plērīque interfectī sunt, priusquam occultum hostem vidērent, L. 35, 29, 3, most of them were slain before they could see the hidden enemy. antequam verbum facerem, dē sellā surrēxit, V. 4, 147, before I could utter a word he arose from his seat. pervēnit priusquam Pompēius sentīre posset, Caes. C. 3, 67, 4, he arrived before Pompey should be able to learn of his coming ([1725]). The present and perfect subjunctive occur rarely, generally when the main clause contains a present of vivid narration ([1590]). The imperfect is not found in old Latin.
[1920.] The perfect indicative or imperfect subjunctive with antequam is often used attributively with nouns denoting time: as,
fābulam docuit, annō ipsō ante quam nātus est Ennius, Br. 72, he exhibited a play just a year before Ennius was born. ducentīs annīs ante quam Rōmam caperent, in Ītaliam Gallī trānscendērunt, L. 5, 33, 5, two hundred years before they took Rome, the Gauls crossed over to Italy. The pluperfect also occurs, when the main verb is pluperfect: as, Stāiēnus bienniō antequam causam recēpisset, sescentīs mīllibus nummūm sē iūdicium conruptūrum dīxerat, Clu. 68, Stajenus had said two years before he undertook the case, that he would bribe the court for six hundred thousand sesterces.
[1921.] The pluperfect subjunctive is rarely introduced by antequam or priusquam except in indirect discourse: as,
antequam dē meō adventū audīre potuissent, in Macedoniam perrēxī, Pl. 98, before they should be able to hear of my arrival, I proceeded to Macedonia ([1725]). āvertit equōs in castra priusquam pābula gustāssent Trōiae Xanthumque bibissent, V. 1, 472, he drave the horses off to camp, or ever they should taste of Troja’s grass and Xanthus drink ([1725]).
[1922.] It may be mentioned here that postrīdiē quam and prīdiē quam occur a few times in Plautus and Cicero with the indicative; postrīdiē quam with the indicative in Suetonius; and prīdiē quam with the subjunctive in Livy, Valerius Maximus, and Suetonius.
[posteā quam or postquam.]
ubī̆, ut, cum prīmum, simul atque.