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"Oh" is an interjection which is often translated as "oh", and "I didn't know that" is a phrase which is often translated as "no sabía eso". Learn more about the difference between "oh" and "I didn't know that" below.
oh(
o
)An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
a. en serio
Oh? You're going to be the master of ceremonies?¿En serio? ¿Vas a ser el maestro de ceremonias?
b. no me digas
Oh, you have got to be kidding. Steve's going out with Melanie again?¡No me digas! Debe ser una broma. ¿Steve está saliendo de nuevo con Melanie?
I didn't know that(
ay
dihd
-
ihnt
no
thaht
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. no sabía eso
There are three types of travel tickets. - Thank you. I didn't know that.Hay tres tipos de boletos de viaje. - Gracias. No sabía eso.