How to pronounce 這麼快 in Cantonese (3 out of 6):

這麼快幹嘛平常沒有見你吃這麼快
You don't usually eat so fast.

Cantonese Sentence Breakdown

hek3
to eat
to consume
to eat at (a cafeteria etc)
to eradicate
to destroy
to absorb
to suffer
這麼快 ze2 mo1 faai3
so quickly
幹嘛 gon3 maa3
why
平常 ping4 soeng4
normally
沒有 mou5 jau5
without
jin6
to show
to appear
to become visible
to manifest
nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person