Adjectives in Italian | Specific language questions | Forum

When do you put adjectives before and after verbs?

There's category of adjectives called "aggettivi qualificativi", such as "grande", "bello", "freddo". These adjectives have to be put after the verb in the 80% of the cases (example: té freddo, casa grande). 

However, there's a little exception to this rule. In fact if you want to create more emphasis you have to put the adjective before the noun. If you see a very big house, you could say "it's so big!". In Italian you say this moving the adjective "grande" before "casa" and you'll obtain "grande casa".

If you need to give directions to a foreign person, you could say "Quando vedi una grande casa gialla devi girare a destra" (when you see a big yellow house you have to turn right)

There are other kinds of adjectives, such as possessives ones, that have to put it before the noun.

For example: la mia casa, il tuo gatto (and not "la casa mia", "il gatto tuo")

You put two different examples in your question.

in "lo so", lo is a pronoun.  

Example:

A: Ti devi preparare per il pranzo (you have to prepare for lunch)

B:  Lo so (I know) (and not: So che mi devo preparare per il pranzo. "Lo" replaces the sentence)

In "le posso fare una demanda", le means "to you" and it's the courtesy form. 

Is it clear?