Spanish language Q&A Forum

In your explanation above under "careful", the original sense used "acabamos con" but the follow-up explanation used "nos acabamos". Are they interchangeable? 

In English, we often express the imperfect tense (a past habitual action) using the modal "would":

When I was young, I would eat sugar.

I can't find examples of the Spanish equivalent:

Cuando era joven, comería azúcar.

But just using the Spanish imperfect seems like it might be wrong:

Cuando era joven, comía azúcar.

... seems to translate literally as "When I was young, I was eating sugar", which doesn't seem to clarify that it was a habitual action rather than a one-time thing.

So, how would you say "When I was young, I would eat sugar" in Spanish?

While working in a Spanish-speaking school, the kids would say, "Se puede entrar?" to ask if they could enter the class room. The teacher would respond by saying, "Sí, se puede." Why would they use this form? It's like saying, "Can one enter the room?" Is it actually a passive question instead?

I'm having a tough time knowing when to use the simple past and when to use the imperfect. Could someone walk me through the sentence below and help me understand why we use the different tenses?