# celebrated

That is, “was celebrating.”

# took some bread

This could be translated as, “picked up a piece of bread” or, “picked up a flat loaf of bread.”

# broke it

Some languages should say, “tore it in pieces” or, “tore it in half” or, “tore off part of it.”

# Do this to remember me

That is, “Do this as a way to remind yourselves of what I am doing for you.” Jesus was referring to his death, which would happen soon.