Poser une question et y répondre brièvement en anglais suit une mécanique régulière, avec un « auxiliaire ».

Former une question : l'auxiliaire passe devant

• Présent simple : "Do you deliver abroad?" / "Does she speak English?"
• Passé : "Did you send it?"
• Avec "be" : "Are you available?" / "Is the order ready?"
• Present perfect : "Have you received the payment?"

Les réponses courtes : on reprend l'auxiliaire, pas le verbe entier

• "Do you deliver abroad?" → "Yes, we do." / "No, we don't."
• "Did you send it?" → "Yes, I did." / "No, I didn't."
• "Is the order ready?" → "Yes, it is." / "No, it isn't."
• "Have you received it?" → "Yes, I have." / "No, I haven't."

Répondre juste "Yes" ou "No" sec peut sembler abrupt ; la réponse courte complète est plus polie.

Les questions ouvertes (wh-)

"What", "Where", "When", "Who", "Why", "How much", "How long" + auxiliaire :

• "How long does delivery take?" — "About a week."
• "Why is it delayed?" — "The supplier is late."

Piège fréquent chez les francophones

• "You have received it?" (ton montant seul) → à l'écrit et en pro, on forme la vraie question : "Have you received it?"
• "How much costs it?" → "How much does it cost?"

Exemple concret : "Do you ship internationally?" — "Yes, we do." — "How long does it usually take?" — "It depends on the country, but usually two to three weeks." — "Have you had problems with customs?" — "No, we haven't, so far."