When used after a preposition, they are explicit and they always follow the verb. The explicit complement pronouns are:

ME (me)

TE (you)

LUI, LEI (him, her, it)

NOI (us)

VOI (you)

LORO (them)

Examples:

Ha sempre parlato bene di sua sorella → di lei (He has always said good things about his sister → about her)

Vado sempre a teatro con il mio fidanzato → con lui (I always go to the theater with my boyfriend → with him)

Hanno portato un pacco per i miei zii → per loro (They brought a package for my aunt and uncle → for them)

*Devi dire tutto a me e alla mia amica → a noi (* You must tell everything to me and my friend → to us)

*Hanno accusato Marco → lui (* They accused Marco → him)

The complement pronouns marked with “*“, that is the one that stands alone and the one introduced by the preposition A, however, also have alternative implicit forms, generally put before the verb!! Let’s see which are the complement implicit pronouns:

0) The complement pronouns that are used alone and that answer the question “Chi? Che cosa?” (Who? What?):

MI (me)

TI (you)

LO, LA (him, her, it)

CI (us)

VI (you)

LI, LE (them)

Examples:

Paolo sogna me → Paolo mi sogna (Paolo dreams about me)

Paolo accusa te → Paolo ti accusa (Paolo accuses you)

Paolo compra il libro (= lui) → Paolo lo compra (Paolo buys the book → Paolo buys it)

Paolo ascolta sua madre (= lei) → Paolo la ascolta (Paolo listens to his mother → Paolo listens to her)

Paolo indica me e Carlo (= noi) → Paolo ci indica (Paolo points at me and Carlo → Paolo points at us)

Paolo sogna te e il tuo cane (= voi) → Paolo vi sogna (Paolo dreams about you and your dog → Paolo dreams about you)

Paolo rimprovera i suoi figli (= loro) → Paolo li rimprovera (Paolo blames his children → Paolo blames them)

Paolo mangia le patatine (= loro) → Paolo le mangia (Paolo eats chips → Paolo eats them)