Monographs

a. Protasis: ἐά_ν with the subjunctive.

Apodosis: any form expressing future time.

ἐὰ_ν ταῦτα ποιῇς (ποιήσῃς), καλῶς ποιήσεις if you do this, you will do well.

b. Protasis: εἰ with the future indicative.

Apodosis: any form expressing future time.

εἰ ταῦτα ποιήσεις, πείσει if you do this, you will suffer for it.

c. Protasis: εἰ with the optative.

Apodosis: ἄν with the optative.

εἰ ταῦτα ποιοίης (ποιήσειας), καλῶς ἂν ποιοίης (ποιήσειας) if you should (were to) do this, you would do well.