In English, 'to listen' implies 'to pay attention to', whereas 'to hear' simply means to be aware of sound, without necessarily listening to it. So It's the same in my language!
In AZIZA's example below;
-Услышь же то, что я тебе говорю!-
This is perfective. Is this perfective because the speaker wants the listener to hear all that is said, ie to complete the action of hearing the words?
I am beginning to understand some of the situations where perfective is used, but I may not properly understand in this example...