what does he not understand
what do he not understand
pro:int v pro:sub neg v
what does he not understand ?
w ʌ t WORD_BOUNDARY d ʌ z WORD_BOUNDARY h iː WORD_BOUNDARY n ɑː t WORD_BOUNDARY ʌ n d ɚ s t æ n d WORD_BOUNDARY
w h a t WORD_BOUNDARY d o e s WORD_BOUNDARY h e WORD_BOUNDARY n o t WORD_BOUNDARY u n d e r s t a n d WORD_BOUNDARY