Well, this is my first post, and hope it is the first one from a serie of Spanish language posts!
I guess you’ll probably already listened to the pronunciation of “uno”, that is, “one”.
This Spanish word is masculine: el uno. This is because in fact, we are ommiting the noun “número” (“number”), which is masculine: “el número”. And, since, “uno” is an adjective, and we know adjectives in Spanish take the number and gender of the noun they qualify, “uno” should also be masculine.
“Mi hijo es el número uno en el colegio.” (My son is number one at school.)
“Tú tienes dos hijos y yo tengo uno. (You have two sons and I have one.)
Something important we must remember about “el número uno”: Whenever “uno” is followed by the noun it qualifies, it (uno) becomes “un”. On the other hand, if there is no noun, it will remain “uno”. Examples:
“Tengo un amigo” vs. “Tengo uno” (“I have one friend” vs. “I have one”.)
“He comido un huevo frito” vs. “He comido uno.” (“I have eaten one fried egg” vs. “I have eaten one.)
Again, I hope you find this mini-lesson helpful and please, in case you have any question or comment about Spanish number “uno”, or about Spanish language in general, feel free to post here.