"He has a cat."
Translation:Él tiene un gato.
You use "tiene" when you are saying "he/she has". You use "tienes" when you are saying "you have"
Tengo is referring to self "i" tiene is referring to he or she. Eg. Yo tengo, i have. El tiene, he has
Because when you are talking about something that is gender-ambiguous and in general with no specified gender then it will just automatically be the masculine version
Im confused with un and una. Where should we use them? If there is any rule or trick,please let me know
Un and el are masculine while una and la are feminine.
Because "gato" is masculine you would use the masculine "un"
You should check the tips page on the home screen. It is the light bulb icon.
Un is used to describe the masculine pronoun, for eg the beginning of the sentence "el" tiene un casa. "Un"in this case masculine. Where as "ella" tiene una casa