How to pronounce 幼稚 in Cantonese (3 out of 7):

即系都系太幼稚
That's too childish.

Cantonese Sentence Breakdown

即系 zik1 hai6
which is..
dou1
all
both
entirely
(used for emphasis) even
already
(not) at all
metropolis
capital
big city
the whole
elegant
refined
without exception
also
too
still
used in a sentence to add an inference or interrogative tone
hai6
department
taai3
(adjective) (of generations) 1. Great-grand; (noun)
Great-grand mother or father; (Reduplication) "太太" =
wife; 2. Mrs.
幼稚 jau3 zi6
immature