Hello! Something else occurred to me. Why does it sound like thereīs no t left in 'center' and 'went away', but it does sound like thereīs a t in 'canīt understandī, 'hadnīt 'understood'? Is there a rule at all for this? Thanks!
I don't know who you are listening to. I am just as likely to lose the "t" sound in any of those. Unless I am deliberately talking "formal."
If I say "I can understand" and "I can't understand" the difference is in vowel sound and emphasis and not the presence of a "t."