Rob Haden wrote:
> Let's say there's a language with a simple verbal system, having three main
> verbal markers:
>
> 1. Anterior tense marker.
> 2. Irrealis mood marker.
> 3. Non-punctual (progressive) aspect marker.
>
> Thus, the unmarked form of the verb (with respect to TMA) would be aorist
> aspect, concomitant tense, and indicative mood.
>
> I want to make the verbal system more complex using only those three
> formants above. Here is what I have in mind:
>
> Aorist + Anterior Tense > Perfect(ive)
> Progressive + Anterior Tense > Imperfect(ive)
>
> Is this realistic? My concern is mainly with the first derivation.
Isn't the progressive aspect already a kind of imperfective aspect?