In Greek, verbs have a different: person voice meaning tense mood
The moods in Greek are: indicative: fact or statement subjunctive: possibility optative: more remote in likelihood or time than the subjunctive
The subjunctive is simple Only present & aorist Lengthened versions of the indicative form Used in a few constructions No augment
The optative is also super simple Only present & aorist (& future…) Distinctive diphthong: oi, ai, ei Used in historic sequence: imp & aor No augment
e.g. I go to the shop to buy caterpillar cake main verb = present = primary verb of purpose clause in subjunctive I went to the shop to buy caterpillar cake main verb = aorist = historic verb of purpose clause in optative
but even with historic tenses, Greek often uses the subjunctive…