What are they?
Definite articles indicate a specific person or thing: il libro, la casa, gli studenti.
The choice depends on three things: gender, number and initial sound of the word.
il
common singular masculine
il libro
common singular masculine
il libro
lo
in front of s+consonant, z, ps, gn, x, y
lo studente
in front of s+consonant, z, ps, gn, x, y
lo studente
la
feminine singular
la casa
feminine singular
la casa
l’
before a vowel
l’amico, l’amica
before a vowel
l’amico, l’amica
🇮🇹 Why do we say lo studente?
Because studente begins with st. Before s + consonant we use lo.

