How do you say to eat supper in spanish?

Eat supper would be 'coma la cena' in Spanish. TO eat supper would be 'para comer la cena'. Come eat, supper is ready would be 'Venga comer. La cena esta lista.'. I do not know Spanish at all, however, and I have just used a free translation website. Somebody that is fluent with the language would be of more help, although the answer I have provided shouldn't be too far from 100% accurate.