he looked so frightened
he look so frighten
pro:sub cop adv part
he looked so frightened !
h iː WORD_BOUNDARY l ʊ k t WORD_BOUNDARY s oʊ WORD_BOUNDARY f ɹ aɪ ʔ n̩ d WORD_BOUNDARY
h e WORD_BOUNDARY l o o k e d WORD_BOUNDARY s o WORD_BOUNDARY f r i g h t e n e d WORD_BOUNDARY