In my textbook it states there are three groups of verbs used with て form when followed by the helping verb いる
(1) verbs that describe continuous states
(2) verbs that describe activities that last for some time
(3) verbs that descirbe changes that are more or less instantaneous
based on the "semantics"(I take that to mean characteristics) of a verb it can fall into any of these three groups.
For the first group I all know is ある and いる and they are never used with いる. As for the second and third group this is where the confusion starts. Some verbs fall into group 2
verb group 2 ex: たべる、よむ、まつ
and some, fall into group 3
verb group 3 ex: いく、 くる、 わかる、 のる
I can't tell which category each verb goes into and depending on the category depends on the meaning of the verb. Although the chapter gives a lot of examples and shows me which category they go in I can't seem to figure them all out. I know in the following chapters it will give more verbs too so I'd like to be able to figure out where they go. The chapter also gave a good example on how determine whether a verb belongs to group 2 or 3 by checking if the verb allows for a phrase describing duration if it doesn't its in group 3. I've been trying to use this to sort the two but I keep running into examples that I think make sense but are in group three.
ex. コンピューターは いちじかんけしました
the computer turned off for 1 hour
This makes sense to me but is also a verb in 3. So I'm just wondering if anyone could teach me a trick or give me advice as to how to tell what category a verb is in. (sorry for the longer question)