- Person and number (this is easy)
- Tense, time, or aspect (this is hard)
Prompt: Ὁ ἀκούων ὑμῶν ἐμοῦ [ αὐτός / ἀκούειν ]
And the user would supply the correct finite form of the verb ἀκούειν in the given context, using the person and number associated with αὐτός:
Answer; Ὁ ἀκούων ὑμῶν ἐμοῦ [ ἀκούει ]
If we wanted the Aorist form instead, we could indicate that by using the aorist infinitive in the prompt instead of the present infinitive:
Prompt: Ὁ ἀκούων ὑμῶν ἐμοῦ [ αὐτός / ἀκούσαι ]
In some places, context is sufficient without the pronoun:
Prompt: οἵτινες [ ἀκούειν ] τὸν λόγον
But using this approach, how would we indicate future or perfect or pluperfect, or distinguish present from imperfect?
Another possibility would be to use the principal part, which gives us some of this, but still does not, for instance, distinguish present from imperfect. Or perhaps we could use the infinitives for aorist vs. present stem, and use principal parts for those things the infinitives don't handle. But that's assymetrical and less than ideal.
Or perhaps we could indicate the aspect and time using the same conventions we use for verb coloring in texts, and use pronouns for person and number. I can't replicate that with phpBB coloring, but if blue meant imperfective and underline meant past, it might look like this:
Prompt: Ὁ ἀκούων ὑμῶν ἐμοῦ [ αὐτός, ἀκούειν / ἀκούσαι ]
So the user is expected to give the past imperfective form of the above, i.e. the imperfect:
Answer: Ὁ ἀκούων ὑμῶν ἐμοῦ [ ἤκουεν ]
I don't know that these are good examples ... I'm fishing around for better ways to do this. Any suggestions?