Antes de Descartes, la teoria (trato (preterito) O trataba) de...
This is a grammar question about how to say that the previous theory dealt with something. I don't know whether to use the preterite or the imperfect past tense because the previous theory lasted a long time although it was temporary.
Este es una pregunta gramatical sobre como se dice que la teoria previa (trato -o- trataba) de algo. No se si debo de usar el preterito o el pasado imperfecto porque la teoria previa duro por un tiempo largo aunque ya no es actual.
3 Answers
"Tratar de" is the proper verb when talking about the subject the theory dealt with. It should be in the imperfect because it is not describing an action completed in the past.
Based on your comment, I think it has to be:
"Antes de Descartes, la teoría era....."
HI Maureen, welcome to the site
Can you post the whole sentence?
In the short one above I would use
La teoría de Descartes era .....