The participle is another impersonal form. There are 2 forms, the present and the past.
a. The present participle is used as:
a noun (e.g. insegnante),
an adjective(e.g. pesante),
occasionally as an adverb (e.g. mediante).
For regular verbs it is formed in the following way:
b. The past participle is used to form certain tenses of verbs.
Examples:
Ho letto tantissimi libri.
Ieri siete stati al mare?
I miei genitori sono partiti questa mattina.
Every verb has a past participle and for regular verbs it is formed in the following way: