French phrase
Comment change-t-on de ~ ?
Meaning
How do you change ___?
When to use it
An inquiry about how to change one thing to another. It is often used to ask about a procedure and can sound somewhat formal.
Example dialogue
Comment change-t-on de cours ?
How do you change courses?
Il faut parler au bureau des inscriptions.
You need to speak to the registrar's office.