• The demonstrative adjectives "questo and quello" correspond to "this and that". They agree in number and gender with the nouns they modify.
• Questo, has four forms, but may be abbreviated to quest' before a singular noun or object that begins with a vowel.
• Quello, like the definite article, has eight forms.

QUESTO (THIS -> THESE)

• masc./sing. : questo/quest' - THIS
• masc./pl. : questi - THESE
• fem./sing : questa/quest' - THIS
• fem./pl. : queste - THESE

QUELLO (THAT -> THOSE)

• masc./sing. : quel - THAT
• masc./pl. : quei - THOSE
• fem./sing : quella/quell' - THAT
• fem./pl. : quelle - THOSE

SPECIAL

• The following adjectives are used with masculine words beginning with: z, s + a consonant, gn, ps, pn and a vowel.
• masc./sing. : quello/quell' - THAT
• masc./pl. : quegli - THOSE