28.20 If an infinitive is used as an ARTICULAR or a COMPLEMENTARY INFINITIVE, the present and aorist tenses of the infinitive are used to express ASPECT, not time (S 1865, G 563). In other words:
- The PRESENT infinitive expresses activity that is ONGOING in some way.
- The AORIST infinitive expresses a SIMPLE, single, momentary action.
For example:
- βαίνειν βούλομαι. I want to go walking/to be walking.
- Present infinitive.
- βῆναι βούλομαι. I want to walk.
- Aorist infinitive.