Can the word so be used in spanish before a statement?
As in: So, what are you doing? So, how was your day? etc.
4 Answers
You may use "entonces' in a similar way. Not exactly the same, but it is close.
¿Entonces, como te fue hoy?
Pues, así que, entonces, and a few other phrases are equivalent to So depending on whether it is a muletilla (filler word) or meaning, Therefore, intensive (so big...tan grande), etc.
Don't confuse it with this:
I agree with Guillermo, however unlike so, entonces can also be used as a noun, meaning a certain time period in the past, ie: "En ese entonces, no habían criminales manejando los bancos como ahora."
No, that is an English word. You can use the word/s "entonces/y entonces" ----- Entonces, ¿que estás haciendo?, "Y entonces, como estuvo tu día"