Now the main peculiarities of Ionic morphology and phonetics:
a) the Common Hellenic long á became é (mátér > métér)
b) the Indo-European *w disappeared; other dialects preserved it much longer
c) special forms of plural personal pronouns (hémeis - we; Doric hames)
d) a -nai ending for athematic verb infinitives (e.g. bénai - to step)
e) presence of habitual iterative forms of the past tense with suffix -sk- (e.g. eipa - I said)
f) the form én for the 3rd person singular of the
verb "to be" - derived from historical tenses like imperfect.