Rules on Mas. and Fem.
Why is sofá written with el instead of la in front of it. I thought the rules were if it ended in O then it was Mas. and if it ended in A it was considered Fem.
3 Answers
For further comment:
There are very few exceptions to the rule for words that end in o- I think the best known is la mano; la foto and la moto are also common enough words, but if you remember that they are short for fotografía and motocicleta they are easy.
There are many exceptions to the a rule, especially many of the Greek origin words that end in ma (but also some others like el mapa, el planeta)- I actually find it easier to assume that a ma ending word is masculine (idioma, dilema, tema, programa, sistema etc. etc. etc.) and memorize the ones that are actually feminine like la pluma, "la palma", "la rama" and "la cama".
There are always exceptions to the rule.
see my flashcards