That's how a lot of older Latin does it. For example if the question is "Did you go to the forum today?", the questionee might respond "I did not go to the foru

That's how a lot of older Latin does it. For example if the question is "Did you go to the forum today?", the questionee might respond "I did not go to the forum today" (or something more concise like "I didn't go", or if they were being super informal just say the equivalent of "didn't")