Comparatives of equality
cosi+ adjective/adverb+ come (as....as)
tanto+ adjective/adverb+ quanto (as...as)
Comparatives of equality with nouns
Must use tanto/quanto with comparatives of equality, and must agree with the nouns that follow them.
Comparatives of inequality
più + adjective/adverb/noun + di (more than)
meno + adjective/adverb/noune + di (less than)
Using an improper noun with inequality
Must use the preposition article (del, della, dell', etc.) in replace of the di.
When to use che instead of di
di is used for items while che is used for adjectives and activities that are similar to each other.
comparative for buono/a (good)
comparative for cattivo/a (bad)
comparative for grande (big)
comparative for piccolo/a (small)
comparative for bene (well)
comparative for male (badly)