I. Say the question and answer: (Does he/she eat dinner at (time)? / Yes, he/she does. No, he/she doesn't. What time does he/she eat dinner? / He/She eats dinner at (time).)

When we ask and answer about actions at a certain time that require a "yes" or "no" response, we use the following sentence pattern:
<p>
Do/Does (subject pronoun) (verb) (time)?
<p>
Yes, (subject pronoun) (do/does). / No, (subject pronoun) (don't/doesn't).