I always used to think that verbs could only be understood in terms of tense (i.e. the time when their action takes place) and aspect (i.e. whether the action is complete or incomplete.)
Recently I have been looking into this in a little more depth, and it turns out that things may be somewhat more complex. According to modern Linguistic theory it seems to be the case that:
1.) Verbal aspect has to do with a speaker or writer’s subjective viewpoint rather than the issue of whether or not the action is ‘complete’. Put another way, it has to do with whether an action is viewed as a whole and (conceptually speaking) from a certain distance, or whether the focus is on the active unfolding of the event.
2.) Aside from tense and aspect, verbs have a third quality which Linguists call “Aktionsart”. This has to do with the nature of the action - is it a ‘one-off’ action? Is it an oft repeated and habitual action? Is there a focus on starting the action? etc.
(This is probably a drastic simplification, BTW :-0)
As a rule I am skeptical about this goop about ‘breaking down’ languages. Yet I must confess that the above does seem to make quite a lot of practical sense to me.
For example, I’ve always struggled to see the logic as to why (in languages like Italian) habitual and oft-repeated actions in the past are considered to be imperfect in their aspect. According to the above thinking, I understand that they would actually be perfect in aspect (i.e. viewed as a whole from a distace) but a series of repeated actions in terms of Aktionsart. This just kind of feels right to me…
However I don’t quite see how this theory would apply to some other examples:
a.) “I have broken the window” - Is this a perfect aspect and ‘one-off’ Aktionsart in present time?
b.) “I broke the window” - Is this a perfect aspect and ‘one-off’ Aktionsart in past time?
c.) “I am breaking windows” - What is the Aktionart of that? Does the time extend into the future?
Can anyone explain this stuff…??