|
αι, ει, and οι are ancient diphthongs that long ago simplified to a single vowel sound.
So, assuming that we're speaking about Modern Greek, these are now digraphs (two written letters representing one spoken sound):
αι is pronounced just like ε -- /e/ as in "get"
ει and οι are both pronounced just as ι, η, υ are -- /i/ as in "eat".
(Υou will not find ηι or ωι anymore, and for practical purposes the use of υι as the single spoken vowel sound /i/ is extremely limited.)
If there is an accent mark on the second vowel (αί, εί, οί), that simply means that this digraph, representing a single spoken vowel sound, is the stressed syllable in speech; it does not affect the pronunciation.
___
If, however, these written two-letter combos do not actually represent one spoken sound, a diaeresis (¨) is used on the second letter to indicate that there are two separate vowel sounds:
αϊ is pronounced /ai/ as in "sky"
εϊ is pronounced /ei/ as in "weigh"
οϊ is pronounced /oi/ as in "oil"
If the first vowel has an accent mark, that indicates that we are dealing not only with two distinct vowel sounds, but that the first vowel is the stressed syllable in speech: άι, έι, όι.
Regards,
Greg Brush |