you don't know his name
you do know his name
pro:per mod v det:poss n
you don't know his name ?
j uː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY h ɪ z WORD_BOUNDARY n eɪ m WORD_BOUNDARY
y o u WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY h i s WORD_BOUNDARY n a m e WORD_BOUNDARY