Spanish language Q&A Forum

Why does the accent change from comprárselos to cómpreselos depending on the conjugation? Does the stressed syllable always change in the imperative form? 

Please could you explain the following:

Los chicos estaban sentados en el borde de la piscina. correct
Los chicos estaban sentando en el borde de la piscina. not correct
The boys were sitting on the edge of the pool.

I am pretty sure that I have been taught to use the gerund rather than than the past participle in this kind of an example.

Many thanks  (Mainland Spain)

Me gusta el vídeo. La narradora habló con mucha claridad. Gracias.

I understand the use of 'para' in these sentences:

¿Quieres algo para comer?

Tengo algo que contarte

Can you help?¿Necesitaba algo para escribir?

But I don't understand the use of 'que' in the following:

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.

En este frase, no entiendo por que es "Si usted hubiera venido antes, yo le atendería" y no "Si usted hubiera venido antes, yo le habria atendido".  No entiendo por que la tradución en ingles es I would have served you y no I would serve you.... Help!

When I hear the phrase "la falda es bonita", it sounds like "la fine-da ...". I would expect to hear something like "foul-da". Do you agree? I have to admit it has taken me years and a pair of good hearing aids to make progress with hearing Spanish pronunciation. Thank you for your excellent Spanish learning application!