by lauragibbs » Thu Jul 07, 2011 4:29 pm
It seems to me that it's not entirely lexical - it goes deeper than that, in the sense that the active forms of those verbs are not just "rare" but rather that the active forms would probably seem nonsensical to users of the language. When you have something that would be nonsensical to users of a language, you are likely facing some kind of structural issue, rather than just lexical issues.
It sometimes help to think of language structures in terms of binary pairs - so, for example, with verbs you can imagine that all verbs belong to one of two classes: MIDDLE and NON-MIDDLE. Then, within the class of NON-MIDDLE you have another structural pair: ACTIVE-PASSIVE. The terms "active" and "passive" really don't mean anything at all in the world of middle verbs, but they are crucial elements in the construction and understanding of non-middle verbs.
By teaching active as a kind of base category, textbooks are being practical, but creating an awkward problem for students later on. The textbooks suggest that the first question you should ask about a verb is whether it is active or not. But structurally, what you probably want to ask about a verb first of all is whether it is middle or not. Only AFTER you have decided that a verb is not middle can you reasonably ask: is it it active - or passive? The problem is that for us, really grasping the middle as a distinct voice is extremely difficult; of course we can instantly ask about a noun, hey, is that singular or plural? We can even get pretty good with noun gender. But making room for middle voice when our (English-speaking) brains have already divided the verb world up into active and passive is pretty hard, at least in my experience.
Deponent verbs are the ones that have such an overwhelming preponderance of middle usage that as soon as you see one of those verbs, you can reasonably assume that it is middle voice - although, as a non-native speaker without any language mastery, you might indeed be misled by the form into thinking that the deponent verb could be passive. I think it's really important for textbooks to introduce deponent verbs AND middle voice as soon as possible exactly so that people do not start thinking that the endings you learn for the passive are exclusively passive. That is a huge failing in some Latin textbooks I have taught from (most Latin textbooks do not even mention middle voice; they just drone on about deponent verbs being "passive in form, active in meaning"). I really like the way that Croy's Primer of Biblical Greek introduces middle and passive for the first time together, in the same chapter (Chapter 9). In Athenaze, the middle voice is actually introduced BEFORE the passive (middle is in Chapter 6, passive is not until Chapter 23).