我係唔知佢點做到嘅
I do not know how it does

Cantonese Sentence Breakdown

我 ngo5
I
me
my
us
we
our
self
係 hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
唔知 m4 zi1
don't know (spoken)
佢 heoi5
he
she
it (Cantonese)
Mandarin equivalent: 他tā [他]
點做 dim2 zou6
what to do; how
到 dou3
to (a place)
until (a time)
up to
to go
to arrive
(verb complement denoting completion or result of an action)
been to
a particle used after a verb or adjective to indicate degree
extent
嘅 koi3
indignant
generous
to sigh (with emotion)