It will take me forever to learn prepositions!!
 

Two sentences from my workbook:
- ¿No sabes que Ana está de viaje por Ecuador?
- Pero, ¿tú no recuerdas que hablamos de Ana?

I'm not sure why they used "por" in the first and "de" in the second. Is "por" always used with "viajar"? And "de" with "hablar"?

It's hard to make exhaustive lists of verbs and their matching prepositions. :thinking:
Prepositions depend your intention. I can only suggest that you practice a lot. :D

Just a little note: "Andar/estar de viaje" (to be on a trip) is not exactly "viajar" (to travel).

· Anda de viaje por Ecuador. -> She's travelling somewhere around Ecuador.
· Anda de viaje en Ecuador. -> She's travelling in Ecuador.
(Similar ideas, but I'd say "por" is a bit more vague.)

"Viajar" can use: -a, -por, -en, -con/-sin, -desde, -hacia, -hasta, -para...:

· Pedro viaja a Berlín esta tarde.
Pedro is travelling to berlin this afternoon.
· Viajaron por toda Europa en 30 días.
They travelled around Europe in 30 days.
· ¿Viajaste en tren o en autobús?
Did you travel by train or by bus?
· Juan viaja siempre con/sin su esposa.
Juan always travels with/without his wife.
· Mis padres viajan cada año desde Canadá para visitarme.
My parents travel every year from Canada to visit me.
· Empezamos viajando hacia el norte, pero luego nos desviamos del camino.
We started the trip to the North, but then we turned away from the road.


Hablar de/acerca de (algo/alguien):
· Estamos hablando del/acerca del calentamiento global.
We're talking about global warming.
· ¿Estás hablando de/acerca de mí?
Are you talking about me?


There is also "Hablar con (alguien)":

· Hablé con el director de la escuela y dice que no estás yendo a clases.
I talked to the school principal and he says you're not attending your classes.
· Habla con tu esposa para que te perdone por lo que le hiciste.
Talk to your wife so she'll forgive you for what you've done to her.

Thanks, Malila ~ actually, the "estar de viaje por..." makes a lot of sense because of "por aca/alla", which I totally DO understand. :)

The rest of the examples are very helpful, too!

Thank you!! Practicing..........................