你叫什么名字？ (nǐ jiào shénme míngzi?)
Breakdown:
* 你 (nǐ) - you
* 叫 (jiào) - to be called, to be named
* 什么 (shénme) - what
* 名字 (míngzi) - name
Pronunciation:
* nǐ (nee)
* jiào (jyaow)
* shénme (shen-muh)
* míngzi (ming-tzuh)
Tone:
* 你 (nǐ) - 3rd tone
* 叫 (jiào) - 4th tone
* 什么 (shénme) - 2nd tone
* 名字 (míngzi) - 3rd tone
You can also use a slightly more formal version:
您贵姓？ (nín guìxìng?)
This literally translates to "What is your honorable surname?"
Breakdown:
* 您 (nín) - you (formal)
* 贵 (guì) - honorable
* 姓 (xìng) - surname
Pronunciation:
* nín (nin)
* guì (gwey)
* xìng (shing)
Tone:
* 您 (nín) - 2nd tone
* 贵 (guì) - 4th tone
* 姓 (xìng) - 4th tone
This version is usually used in more formal situations, like when addressing someone older or in a business setting.