French phrase
Comment puis-je acheter ~ ?
Meaning
How can I buy ___?
When to use it
A polite way to ask how to purchase something. Used in shops or at service counters.
Example dialogue
Comment puis-je acheter un ticket de métro ?
How can I buy a subway ticket?
Vous pouvez l'acheter au distributeur automatique.
You can buy it at the ticket machine.