Le offro di, La invito a... I offer you, I invite you to..

In lesson 5.6, these are given in the expressions to clarify or apologise. I do not understand why 'La' begins the phrase 'La invito a...' = 'I invite you to'..... Why isn't it Le again for formal (or La for 'I invite her to.....')?

ciao Alice, in the sentence "la invito a", "la" is a pronoun which stands for "you". "La" and "Le" is a direct object pronoun. As you can see from the below list , the pronoun "Le" is used when addressing to more than one person (female). Here below the full list English /Italian me= mi you = ti him,her,it = lo/la you (formal)= La us= ci you (all)= vi them= li,le you (formal)= Li (masc.) ,Le (fem.) I hope this help. Ciao

Grazie Maria, Obviously I have trouble understanding the formal 'you'. Back to the grammar books! Alice