he was reading a book at school
he be read a book at school
pro:sub aux part det:art n prep n
he was reading a book at school.
h iː WORD_BOUNDARY w ʌ z WORD_BOUNDARY ɹ iː d ɪ ŋ WORD_BOUNDARY ʌ WORD_BOUNDARY b ʊ k WORD_BOUNDARY æ t WORD_BOUNDARY s k uː l WORD_BOUNDARY
h e WORD_BOUNDARY w a s WORD_BOUNDARY r e a d i n g WORD_BOUNDARY a WORD_BOUNDARY b o o k WORD_BOUNDARY a t WORD_BOUNDARY s c h o o l . WORD_BOUNDARY