Subject + 姓 + Surname
姓 (xìng) means "to have the surname" or "to be surnamed." It is used to state or ask about a person's family name, as in 他姓王 (His surname is Wang).
你好,请问您贵姓?我姓李。
Nǐ hǎo, qǐngwèn nín guì xìng? Wǒ xìng Lǐ.
Hello, may I ask your surname? My surname is Li.
他姓张,是我的同事。
Tā xìng Zhāng, shì wǒ de tóngshì.
His surname is Zhang; he is my colleague.
我姓王,你可以叫我小王。
Wǒ xìng Wáng, nǐ kěyǐ jiào wǒ Xiǎo Wáng.
My surname is Wang; you can call me Xiao Wang.