Formal:
* 我叫… (wǒ jiào...) - This is the most common and formal way to introduce yourself. It literally translates to "I am called...".
* 我的名字是… (wǒ de míngzi shì...) - This is a slightly more formal and literary way to say "my name is...".
Informal:
* 我叫… (wǒ jiào...) - This is also used in informal settings.
Example:
* 我叫李明。 (Wǒ jiào Lǐ Míng.) - My name is Li Ming.
* 我的名字是张丽。 (Wǒ de míngzi shì Zhāng Lì.) - My name is Zhang Li.
Note: The word "name" (名字, míngzi) is often omitted when introducing yourself in Chinese.