iLrrr-n“What is the vowel sound preceding the final /z/ in words ending in es? Is it /ɪ/, as in the word 'is', or is it /i/, as in the word 'ease'?
”
As in the word "is".
Beach, Beaches = Beach is
Case, Cases = Case is
But when have a plural word that ends in "ies", then it rhymes with "ease". Examples:
Baby, Babies = Bay Bees
Party, Parties = Part ease