Up till now, it seems that you have been sharing his thoughts, without his being any the wiser.直到現在, 你似乎一直在洩露他的秘密, 但他一點也不知情
From the youth up till now, did your characters change?
until 肯定+ 持續的動作 I stayed up until I finished my work. 否定 + 瞬間... work. He has not recceived the book till now.-->文法錯誤 until的定義 : a) to that time and then no...