Bonjour tout le monde. I have learned some new French sentences today. This class is very difficult so I still can't understand it. I just know what the sentences mean.
Tu ne comprendras jamias - tu es à côté de la plaque.
means You'll never understand - you're way off the mark.
------------------------------------------------------------------
Register: informal
Notes: The French word plaque has all kinds of meanings, but in general it refers to some kind of sheet, plate, slab, or chunk of material (ice, metal, food, money, etc). It can also mean a target (literal or figurative). In the expression être à côté de la plaque, it's referring to some sort of target of comprehension that you're aiming for - and missing.
Example:
Tu ne comprendras jamais - tu es à côté de la plaque.
You'll never understand - you're way off the mark.
Copy by About.com