In Italian, modal verbs (also known as "verbi servili") are essential tools used to express the mood or intention of an action. They are followed directly by another verb in the infinitive form, without using any prepositions.
Potere is used to express possibility, permission, or physical ability.
Volere expresses a desire, a strong intention, or willingness to do something.
Dovere indicates obligation, necessity, or a logical conclusion.
When followed by an infinitive, Sapere means "to know how to" or "to have the skill to." It differs from potere because it implies a learned ability rather than just opportunity or permission.
These four verbs are irregular. Here are their forms:
Note: In these constructions, the subject of the modal verb is the same as the subject of the infinitive. If used alone without an infinitive, they still retain their general meaning (e.g., Ti devo dei soldi - I owe you money).
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