"Du isst am Tisch."

[Madcircus]

You eat on the table' isn't correct? -I don't speak english as native.

[ElizaDeLaZeur]

No it is not. "Am Tisch" means "An dem Tisch" means "At the table". Can't mean anything else. "On the table" would be "AUF dem Tisch".

[cquark]

The differences between English "at" and "on" can be very confusing if you are not a native English speaker. The phrases "eat on the table" and "eat at the table" imply something slightly different in English. If you eat on the table it suggests that you climbed up and sat on the table and then ate. Which people sometimes do at parks at picnic tables, but the more common thing is to sit on a chair or bench while the food is on the table. At that point you are eating at the table.

[toriseddie]

Am = on the and um den = at the, right?

[karkar98]

would "Ihr essen am Tisch" be an alternative answer? or does that make it plural?

[toriseddie]

Ihr esst am Tisch would also be correct.

[calypso15]

How do you say "You are eating at a table" (rather than "the table")?

[frenchomelette]

I believe it is "einen Tisch"

[ElizaDeLaZeur]

no that should be an einem Tisch. An is followed by a dative if it is a preposition of location