How to pronounce 當事人 in Cantonese (2 out of 5):

你覺得 你是當事人
You think you're the one who's responsible.

Cantonese Sentence Breakdown

nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person
覺得 gok3 dak1
think
si6
is
當事人 dong1 si6 jan4
party concerned