大家好呀! 大家都知道啦
Hello everyone! Everyone knows

Cantonese Sentence Breakdown

大家 daai6 gaa1
everyone
好 hou3
to like
to love
to be fond of
to be liable to
to be likely to
呀 haa1
(particle equivalent to 啊 after a vowel, expressing surprise or doubt)
都 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
知道 zi1 dou3
know
啦 la5
“now”, with an connotation of doubt
surprise
disapproval