il est en_train d' apprendre
il être en_train de apprendre
pro:sub v:aux adv adv v
il est en train d' apprendre .
i l WORD_BOUNDARY ɛ t WORD_BOUNDARY ɑ̃ WORD_BOUNDARY t ʁ ɛ̃ WORD_BOUNDARY d e WORD_BOUNDARY a p ʁ ɑ̃ d ʁ WORD_BOUNDARY
i l WORD_BOUNDARY e s t WORD_BOUNDARY e n WORD_BOUNDARY t r a i n WORD_BOUNDARY d ' WORD_BOUNDARY a p p r e n d r e WORD_BOUNDARY