As we know that we use ‘ing’ with verb in progressive tense. However there are certain exceptions to this rule when we use the verbs of perception .For instance we always say “I love you” and not “I am loving you”.This is because the verb ‘love’ is a verb of perception and therefore does not take ‘ing’ with it. Similarily there are certain other verbs like Hate,Remember,Know,See,Forget,Prefer,Hear Understand etc. Lets see some more sentences using these verbs.
I am not understanding this–Incorrect
I don’t understand this-Correct
I am hearing you- Incorrect
I can hear you- Correct
She is not remembering my name- Incorrect
She doesn’t remember my name-Correct