"您想买什么？"

Translation: What would you like to buy?

[harijoel]

您(nín) = you (courteous, as opposed to informal 你)

您好(nínhǎo) = hello (polite)
您的(nínde) = your, yours (polite form)

[FaizalZahid]

Xiexienin

[Imnuts7]

Unlike the T-V distinction in European languages, you can use 您 when addressing your grandparents to convey filial piety/respect for the elderly （孝）.

[_LolZ_]

Yes, similar to tú and usted in Spanish

[Agnes278593]

Thank you

[duckmaestro]

What about "Would you like to buy something?"

[JensBjrnha1]

That would be a yes/no question, and there is no 吗 or the like.

[_LolZ_]

"Would you like" is the same as "Do/Would you want" I think

[Andrew-Lin]

您想買什麼？

[pierobonal]

Interesting, this is is the same of lei in italian, usted in Spanish and vous in French. (You sir in English ?)

[TydalM.]

Actually "you" is the formal way of adressing someone in English. Thee, thou, thy, thine used to be the informal way. But since English dropped the informal way, the formal way became the informal way.
Doesn't make a lot of sense, but what actually does in English?

[yula699827]

Why not "what do you want to buy?" or that's will be "yao"?

[scoobert420]

What would you like to purchase is not acceptable...wtf