Pronoun Systems (written)

Je pense à mon travail becomes j'y pense. Je pense à ma sœur becomes je pense à elle — never j'y pense. The rule is clean and almost nobody who learned French by living in it applies it reliably, because both versions are understood instantly and no conversation has ever stopped to flag the wrong one. This is the most reliably fossilized system in the discipline, and the reason is that the distinction it encodes — thing against person — is simply not marked this way in most other languages.

Start with the page that decides which pronoun a group takes: Quel pronom ? Le déterminant et la construction décident. The pronoun is chosen by the first word of the group — a preposition if there is one, otherwise the determiner — never by the noun.

The track takes the system one axis at a time. Y and en first, with the traps they carry: y for things introduced by à, en for quantities and complements in de, and the person exception in both. Then the mirror case for indirect objects — lui and leur against à plus a tonic pronoun — where the verb decides, and téléphoner à, parler à and penser à do not all behave alike however similar they look.

Then placement, which is where sentences fall apart as they grow. Clitic order is fixed and learnable: me/te/nous/vous, then le/la/les, then lui/leur, with y and en closing the chain in that order — and it stays fixed through negation and the passé composé, which is exactly where learners start improvising and the sentence stops being grammatical. The relatives follow — qui, que, dont, and the celui qui family — because they are the other half of pointing at something already mentioned, and because dont is the one B2 written work most often gets wrong.