"Yo soy una mujer."

Translation: I am a woman.

[Freebird66]

"Una," with an/a is feminine. "Un" is masculine. Una mujer, a woman. Un hombre, a man.

[Cparish]

Why would you sometimes say "yo soy" as opposed to just "soy"? Don't they both mean I am.

[lilybett2k]

Yes they both mean I am. It doesn't really matter if you say either of them. They just want you to know you can use both of them. Spanish usually drops the pronoun, so I think "soy" would be used more often.

[Sea_Biscuit]

Why is "woman" acceptable here, but "wife" is not?

[kuikaili]

Mujer directly translates to woman.
Only when used with a possessive (Ex: Es mi mujer), can mujer really mean wife. It's much like "my woman" can mean my wife, girlfriend, lover, etc. It suggests a romantic, but unspecified relationship. In my opinion, mi esposa is more proper, but there's nothing necessarily derogatory about mi mujer.

[AndrewCushen]

I said lady instead of woman. I feel like its not a huge difference.

[March2003]

It is a big difference because there are different words for lady and woman in English so they should be differentiated in Spanish too.