mas means more
menos means less
you can use them to compare two things or people eg. ciara es mas alta que alex. ciara is more taller than alex. always remember that mas+ the adjective+ que.
same for menos eg. ciara es menos inteligente que tu. ciara is less intelligent than you, menos+adjective+que
El dia de navidad we open presents on christmas morning and have family dinner
Ana, eres estudiante ? si, Juan, yo soy una estudiante de Argentina
sorry for the ? at the begining and the accent....i can't with my PC....
ser
soy
eres
es
somos
sois
son
hope I helped !