BEANTWORTEN SIE FRAGEN - Español

Hi Edoboriscuc! I'll try to explain this in the most simple way. First of all, you must to know the functions of simple present and indefinitive past, so:
1. Simple present: has two primary functions: State facts and describe habitual actions.
Examples:
1.Trabajamos en el campo. (It is a fact).
2. Trabajamos desde la mañana hasta la tarde. (It describes an habitual action).

Indefinitive past: The past tense is used for actions already completed or for an action that occurred in the middle of another action.
Examples:
1. Hace 5 años trabajamos en el campo. (It is a finished action).
2. Trabajamos en la mañana pero en la tarde cerraron la fábrica.
As a tip, you most to pay attention to the context of the phrase for notice if it is present or past as well as you difference the cases I explained for both cases.
I hope I helped you!
Joanni

Thanks for your interesting question !

Hello. If there are no further circunstances you simply can' t tell. For instance "Trabajamos mucho". No indications, it means "We work a lot" and "We worked a lot". So, without the context, it's simply impossible to decide, it means both things. Hope this helps.

Por el contexto