Такие глаголы как: like, love, want, understand, hear, see, notice, feel, remember, recognize, wish, know, forget, seem, believe, hate обычно не используются в Present Continuous tense
Н-р,
I hear someone calling me.
Нельзя сказать: I am hearing someone calling me.
Do you understand me now?
нельзя сказать: Are you understanding me know?
What do you feel?
неправильно будет: What are you feeling?