i got some trouble here to give axcetly sound when i spoke with the poeple because some sentence are change ,, example " schedule. picture . Soldier. etc.. i think that, its change by vowel , but really don't know ,, why they are ,,does anyone hepl me?
With 'schedule', some speakers say 'skedule' and other 'shedule', so they are two different pronunciations of the word. Vowels do change when we're talking- we reduce many of them to a small sound like 'uh', so the word does change from the dictionary form when we are talking fast.