Answer:
I: Does he watch tv at night?
N: He doesn't watch tv at night.
Explanation:
If I understood your question well, you need to write this sentence in interrogative and negative forms.
First, we need to identify the tense of the sentence and in this case it's Present Simple Tense.
Interrogative form is made using the verb do/does. In this case, subject is "he" so we use the form "does". We make inversion and write the main verb without the "-es" ending for third person and we get "Does he watch..."
Negative form is easier. Again we use the verb "does" and add negation to it, so we get "doesn't". We write the main verb without the third person ending. This time inversion is not needed, so we get "He doesn't watch...".
I hope this helped.
