I've never seen that before
I never see that before
pro:sub adv part pro:dem adv
i've never seen that before.
aɪ v WORD_BOUNDARY n ɛ v ə ɹ WORD_BOUNDARY s iː n WORD_BOUNDARY ð æ t WORD_BOUNDARY b ɪ f ɔ ɹ WORD_BOUNDARY
i ' v e WORD_BOUNDARY n e v e r WORD_BOUNDARY s e e n WORD_BOUNDARY t h a t WORD_BOUNDARY b e f o r e . WORD_BOUNDARY