Direct object pronouns

indirect object pronouns

J’envoie une lettre à toi. = S+v+DO+à+IO

j’envoie une lettre

S+V+O= direct object

j’envoie à toi

S+V+à+O = indirect object

une lettre = replaced by DOP= la

à toi = replaced by IOP = te

Je te l’envoie.

la , te

Number-gender agreement

number-gender agreement with past participle in composed tenses with ‘object pronouns’ while using direct and indirect object pronouns with avoir ofcourse.

with avoir

while using direct and indirect object pronouns.