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I seem to remember that the various lesson-specific forums did have some general discussion about the aorist and imperfect tense of passive and deponent verbs. From there you might be able to glean some info. As for a comprehensive online resource for the past tense of passive verbs, I don't know any. I can try to sum things up here, but I have to warn you that the formation of the past tense of passive verbs is even more complicated than the formation of the past tense of active verbs.
First, let's get the easy ones out of the way: the continuous subjunctive and the imperfect. As with active verbs, the continuous subjunctive (and thus the continuous future) of passive verbs is identical to the present tense. As for the imperfect, it is formed using special endings added to the same stem as the present tense. There are a few sets of those endings, but when you know the endings used in the present tense, you usually know which ones will be used in the imperfect tense (there are exceptions though). So, when a verb has passive endings in -ομαι (as all stem-stressed verbs do), its imperfect endings will be: -όμουν(α) -όσουν(α) -όταν(ε) -όμαστε/-όμασταν -όσαστε/-όσασταν -ονταν/-όντανε/-όντουσαν Yeah, all those alternatives are valid! When a verb has passive endings in -ιέμαι (as αγαπάω/αγαπιέμαι does), its imperfect endings will normally be: -ιόμουν(α) -ιόσουν(α) -ιόταν(ε) -ιόμαστε/-ιόμασταν -ιόσαστε/-ιόσασταν -ιόνταν(ε)/-ιούνταν/-ιόντουσαν Once again, all alternatives are valid and in use. Other verbs can be complicated, but their endings often look like one of those two lists. Verbs with a present passive in -ούμαι will have passive imperfect endings in -ούμουν (usually lacking the 2nd person singular and plural). Verbs in -άμαι will have the same endings as verbs in -ομαι, but with the stress always on the ending, even in the 3rd person plural -όνταν. Finally, you've got weird endings like 3rd person singular -είτο and 3rd person plural -ούντο, but those are very rare and literary.
For the passive aorist, the passive non-continuous subjunctive and the passive non-continuous future, you need to know that those use a different stem, different both from the present stem and from the active aorist stem. While there are some rules for deriving this stem when you know the present and the active aorist stem, they are as full of exceptions as the rules for deriving the active aorist stem. Generally, like the aorist stem is normally marked by an -σ- element (sometimes hidden as -ψ- or -ξ-, sometimes not there as the aorist stem is irregular), the passive aorist stem is normally marked by a -θ-, -στ-, -χτ- or -φτ- element, and more rarely by a -π- element (you may sometimes see a -χθ- or -φθ- element. Those are literary formed derived from the Katharevousa, which normally always have a more common alternative in -χτ- or -φτ-). The rules can be complex, so it's better to learn the passive aorist stem by heart with whichever verb you're learning. Still, here are a few rules you can start with: - verbs with an aorist stem showing a naked -σ- after a vowel will normally form their passive aorist stem by replacing it with -θ- (especially verbs with an aorist in -ησ-), although some use -στ- instead. - verbs with an aorist in -ξ- will normally form their passive aorist in -χτ-. - verbs with an aorist in -ψ- will usually form their passive aorist in -φτ-, more rarely in -π-. Just like with active aorist stems, irregular passive aorist stems are common, so be careful not to overuse those rules. Once you have the passive aorist stem, conjugation becomes relatively simple: - the passive aorist tense uses the same endings as the active aorist tense, as well as the same stress rule (stress always on the antepenultimate syllable). However, it also adds an element -ηκ- between the stem and the ending. So, using the verb αγαπάω (active aorist αγάπησα), whose passive aorist stem is αγαπηθ-, you get: αγαπήθηκα αγαπήθηκες αγαπήθηκε αγαπηθήκαμε αγαπηθήκατε αγαπήθηκαν/αγαπηθήκανε This is true of any verb with a passive aorist tense (be careful, quite a few deponent verbs have *active* aorist tenses). - the passive non-continuous future and subjunctive add the same endings as μπορώ directly to the passive aorist stem. So you get: θα/να αγαπηθώ θα/να αγαπηθείς θα/να αγαπηθεί θα/να αγαπηθούμε θα/να αγαπηθείτε θα/να αγαπηθούν(ε)
That's about all I can say about the past tenses of passive verbs. The most complicated thing is to get the passive aorist stem, so I advise you to learn it with the verb. You can also use resources like http://modern-greek-verbs.tripod.com/home.html to get a comprehensive set of conjugations, although that site is so information-heavy you sometimes miss the forest for the trees. |