Lately I have been using a “Byzantine” pronunciation for reading Greek (in which everything is the same as Modern Greek except that οι and υ are pronounced like Attic υ). I’ve been having very few problems with this method until I came across this ending: -ευνται. How do you speakers of Modern Greek pronounce it? -ev-n-de with 3 syllables? Or am I missing something? Thanks!
I think there is a vowel missing.
-ε?ονται
e/vonde
e/-vo-nde
No missing vowel in this case. I noticed it with some verbs in the perfect middle. Ex: πεπό?ευνται; similarly πέπαυνται.
Is it possible that this ypsilon is a vowel? Like an omega or omikron? It is very weird to have an “evnde”. “eonde” is quite usable. If it is still an “evnde”, than the syllabes are “ev-nde”.
Ah, the elusive pronounciation of ευ and αυ in modern Greek 
Well ypsilon in these combinations (when we are talking about a diphtong that is and not in cases such as άυλος) is pronounce either as a “v” or an “f”.
The rule is simple: Before θ, κ, ξ, π, σ, τ, φ, χ, and ψ they are pronounced as [af] and [ef]. In all other cases they are pronounced as [av] and [ev]. It’s really simple to remember which way you should pronounced? Remember how ypsilong used to be pronounced? A sound only not completely “rounded” right? Well if you try to pronounce a word containing either αυ or ευ the… old fashioned way, you’ll notice that a faint [v] or [f] sound follows the dipthong.
so it’s for instance
pepavme
pepafse
pepafte
pepavmetha
pepavsthe
pepavde (which I usually pronounce pepavnde but that’s a different issue altogether 
)
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