Spanish language Q&A Forum

Checked two dictionaries and they show accent over the e? Optional? Changed rule? Checked another dictionary no accent. Regional?

In English, "to hear" is a passive act to the person.  It happens to them, whether they wanted it to or not.   "To listen" is an active effort by the person. "If one listens well, he will hear it."  The Spanish dictionary says that "oir" is to hear.  However, "escuchar" can mean "to listen" or "to hear".  Is that correct?

"La escuché cantando" could mean "I listened to her singing" or "I heard her singing".  ??

Is that right?

Thanks

Are these adverbial clauses interchangeable?

I don't understand the difference between hubo and habia. They seem to mean the same thing. What is the difference between them and when do you use one as opposed to the other.

Would another way of explaining the difference be to say that in English you could get the meaning of  the imperfect by saying "The teacher [was] opened[ing] the door" and the indefinido as "The teacher [had] opened the door"

Será mejor que aparques lejos del centro.

It'd be better if you park far from the town centre. [you=tú]

Será - it will be or Sería - it would be

many thanks in advance

Could I suggest adding a link to the aforementioned lesson so that that it's a little easier to see them difference between must have and should have? 

I am having a lot of trouble knowing which one of these to use. The explanations I have found don't make sense to me. For instance "haber estado" refers to something in the past that expresses movement. Then why, when I receive something from Amazon Mexico, does it say "Tu paquete ha sido entregado". ? Very confused about this and I can't find any coherent answers.