Iam afraid of spiders. нужно задать общий вопрос и как можно больше специальных.

Are you afraid of spiders?

What are you afraid of?

Why are you afraid of spiders?

What spiders are you afraid of?

How long have you been afraid of spiders?

When did you learn that you are afraid of spiders?

I am afraid of spiders.
(-) I am not afraid of spiders.
(?) are you afraid of spiders. (you используется т.к. ты не можешь задать сам себе вопрос. это правило!)
Yes, I am
No, I am not

спец. вопросы
who is afraid of spiders?
what are you afraid?