1- Articoli determinativi / Definite articles
(singular >>> plural)
il >>> i IL CANE/ I CANI (the dog/ the dogs) masculine nouns that start with a consonant.
lo >>> gli L’ALBERO/GLI ALBERI (the tree/the trees) the articles “lo” and “gli” are used for masculine nouns that start with a vowel
and the following
pn- (lo pneumatico); tire
ps- (gli psicologi); psychologists
gn- (lo gnomo); gnome
z- (gli zoccoli); hoofs
x- (lo xilofono); xylophone
y- (lo yogurt); yoghurt
s- followed by consonant (gli scogli); rocks
i- followed by vowel (lo iodio); iodine
la >>> le LA STRADA/LE STRADE (the street/the streets) feminine nouns.