请问你想要买什么怎么翻译英语

1. What do you want to buy?
请问您想购买什么？
2. What do you want?
您想要什么？
3. May I help you with something?
有什么可以帮您的吗？
4. What did you have in mind?
您有具体想要购买的物品吗？