I don't know that he talks
I do know that he talk
pro:sub mod v comp pro:sub v
i don't know that he talks.
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ð æ t WORD_BOUNDARY h iː WORD_BOUNDARY t ɔ k s WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY t h a t WORD_BOUNDARY h e WORD_BOUNDARY t a l k s . WORD_BOUNDARY