翻译“这些原本是不应该告诉你的”

This is not supposed to be told you.
这才是地道的说法

这些原本是不应该告诉你的
I should not by right(s) have told you.

Actually I shouldn't have told you.

These should not been told to you originally

Some originally is shouldn't tell you of

These original should not tell you.