c'est en_train de chauffer
être en_train de chauffer
v:aux adv prep v
c'est en train de chauffer .
s ɛ t WORD_BOUNDARY ɑ̃ WORD_BOUNDARY t ʁ ɛ̃ WORD_BOUNDARY d ə WORD_BOUNDARY ʃ o f e WORD_BOUNDARY
c ' e s t WORD_BOUNDARY e n WORD_BOUNDARY t r a i n WORD_BOUNDARY d e WORD_BOUNDARY c h a u f f e r WORD_BOUNDARY