it certainly will help
it certain will help
pro:per adv mod n
it certainly will help .
ɪ t WORD_BOUNDARY s ɜː ʔ n̩ l i WORD_BOUNDARY w ɪ l WORD_BOUNDARY h ɛ l p WORD_BOUNDARY
i t WORD_BOUNDARY c e r t a i n l y WORD_BOUNDARY w i l l WORD_BOUNDARY h e l p WORD_BOUNDARY