如果一個人嘅話就係「一位」
If one person is "one",

Cantonese Sentence Breakdown

如果 jyu4 gwo2
if
一個人 jat1 go3 jan4
alone
嘅話 ge3 waa2
as said
就係 zau6 hai6
it is; exactly
jat1
one
single
a (article)
as soon as
entire
whole
all
throughout
"one" radical in Chinese characters (Kangxi radical 1)
also pr. [yāo] for greater clarity when spelling out numbers digit by digit
first (positional)
one part of a fraction, such as 'a' quarter, an eighth
a short duration (when used with a verb)
each
same
dedicated
from the start
wai6
position
location
place
seat
classifier for people (honorific)
classifier for binary bits (e.g. 十六位 16-bit or 2 bytes)
throne
post
rank
status