"He drinks the wine."
Translation:O, şarabı içer.
Because if there wasn't a comma, there would be a different meaning. Without comma it's, "O şarabı içer." And that would mean "He/She drinks THAT wine." But when we put comma, "O, şarabı içer." It means, "He/She drinks the wine." Without commas, sentences will be complicated in Turkish. They are important.