I also grew up when Mass was in Latin and knew all the correct responses without knowing what I was responding to or what I was saying - recognized a string of sounds and responded with another.
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I’ve heard that lament countless times, and have always wondered how it is that those who make it managed to miss the English translation of the Latin that in almost all Daily/Sunday missals appeared on every recto page opposite the Latin.
As a child, there was enough going on to just keep up w/o reading one language while listening to another. The folks who "taught" Sunday school also seemed to have trouble figuring out how to make kids understand what the heck was going on - do you teach Sunday School?