my father is twenty years old
my father be twenty year old
det:poss n cop det:num n adj
my father is twenty years old .
m aɪ WORD_BOUNDARY f ɑː ð ɚ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY t w ɛ n t i WORD_BOUNDARY j ɪ ɹ z WORD_BOUNDARY oʊ l d WORD_BOUNDARY
m y WORD_BOUNDARY f a t h e r WORD_BOUNDARY i s WORD_BOUNDARY t w e n t y WORD_BOUNDARY y e a r s WORD_BOUNDARY o l d WORD_BOUNDARY