his attention span doesn't last
his attention span do last
det:poss n n mod v
his attention span doesn't last.
h ɪ z WORD_BOUNDARY ʌ t ɛ n ʃ ə n WORD_BOUNDARY s p æ n WORD_BOUNDARY d ʌ z ə n t WORD_BOUNDARY l æ s t WORD_BOUNDARY
h i s WORD_BOUNDARY a t t e n t i o n WORD_BOUNDARY s p a n WORD_BOUNDARY d o e s n ' t WORD_BOUNDARY l a s t . WORD_BOUNDARY