French expressions & patterns
servir vs. servir à faire quelque chose vs. se servir de: how to choose
Same root verb, three distinct jobs. 'Servir' (plain) means to serve someone something. 'Servir à' describes what something is FOR — its purpose. 'Se servir de' means a person actively USES something.
The decision: Someone serving something to someone? → servir. Describing what an object/action is for? → servir à + infinitif. Someone actively using a tool/object? → se servir de.
The choices at a glance
| Choose | When to use it | Pattern and example |
|---|---|---|
| servir | To serve — a person serves a thing to/for someone. | Le serveur nous a servi le dessert. |
| servir à faire quelque chose | To be used for / to be an object's or action's purpose. | Ce bouton sert à allumer l'écran. |
| se servir de | To use something — a person actively uses a tool or object. | Je me sers d'un couteau pour couper le pain. |
Common mistakes
✗ je sers de cet outil
✓ je me sers de cet outil
'Se servir de' is reflexive — dropping 'me/te/se' turns it into a different (rare, awkward) construction. Don't confuse it with 'servir de' (to act as/serve as, e.g. 'ça sert de preuve'), which is not reflexive.
Practise this decision in FKE
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Open servir vs. servir à faire quelque chose vs. se servir de in FKE