因為我係做呢一行
Because I work in this field,

Cantonese Sentence Breakdown

因為 jan1 wai6
due to
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
做 zou6
to do
to make
to produce
to write
to compose
to act as
to engage in
to hold (a party)
to be
to become
to function (in some capacity)
to serve as
to be used for
to form (a bond or relationship)
to pretend
to feign
to act a part
to put on appearance
to fight
to kill
to trick
to have sex
呢 ni1
this
一行 yat1 hang4
a line of