Verbs taking a stressed pronoun (penser à lui)

Normally, when a French verb takes an indirect human object with à, you replace the object with a pronoun placed right in front of the verb (Je parle au dirigeant becomes Je lui parle).

But with a specific group of verbs, the pronoun cannot move to the front. Instead, the preposition à stays anchored right after the verb, followed by a stressed pronoun.

Here is a quick review of the stressed pronouns:

EnglishFrench
memoi
youtoi
him / herlui / elle
usnous
you (plural/formal)vous
them (m. / f.)eux / elles

One common verb that works this way is songer à (to think of):

The leader is strict, but I am thinking of him.
Le dirigeant est sévère, mais je songe à lui.
The leader no longer thinks of me.
Le dirigeant ne songe plus à moi.

Another frequently used expression in this category is faire appel à (to call upon):

The team no longer calls upon them.
L'équipe ne fait plus appel à eux.
The students are here, we are calling upon them.
Les étudiantes sont là, nous faisons appel à elles.

Reflexive Verbs with "à"

A helpful rule of thumb: almost all reflexive verbs (verbs with se or s') followed by à use a stressed pronoun for human objects. Because these verbs already have a reflexive pronoun in front (me, te, se), they cannot accept a second pronoun like lui or leur in that same spot.

He is getting attached to her, even if she is far away.
Il s'attache à elle, même si elle est loin.
You must speak to him personally.
Vous devez vous adresser à lui personnellement.
The opponents are strong, but we oppose them.
Les adversaires sont forts, mais nous nous opposons à eux.
I believe that the successor is joining us.
Je crois que le successeur se joint à nous.