粵典 (words.hk)香港詞
時間過得好快，竟然冇察覺到 ((usually used to describe how fast time passes) before you know it; without realising it; unconsciously; without being aware; unknowingly)
副詞用例
唔經唔覺，又到年尾喇，時間真係過得快嘞。
m4 ging1 m4 gok3, jau6 dou3 nin4 mei5 laa3, si4 gaan3 zan1 hai6 gwo3 dak1 faai3 laak3.
Next thing you know, it's already the end of the year. Time sure does fly.