(1)Sometimes you don't understand why I'm so quiet each day,just as I do not understand why you are so full of debauchery all night.
(2)Sometimes you don't understand why I am so quiet every day,it's just like I don't understand why are you so energetic indulgence night.
(3)Sometimes you don't know why I'm so quiet to spend every day,like I don't know why you're so be full of go indulgence all night.