How to pronounce 寫完 in Cantonese (4 out of 5):

喂你寫完未呀?
Oh, you've finished writing?

Cantonese Sentence Breakdown

wai6
hey, an interjection to call for attention
to express one's dissatisfaction
to try and make a suggestion
to feed (an animal, baby, invalid etc)
nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person
寫完 se2 jyun4
finish writing
mei6
not yet
haa1
(particle equivalent to 啊 after a vowel, expressing surprise or doubt)