Formal:
* 对不起 (duì bù qǐ) - This is the most common and versatile way to say "sorry." It can be used in almost any situation.
* 抱歉 ( bào qiàn) - This is a more polite and formal way to say "sorry." It is often used in business settings or when addressing someone you don't know well.
Informal:
* 不好意思 (bù hǎo yì si) - This is a more casual way to say "sorry." It's often used with friends or family.
* 抱歉 ( bào qiàn) - This can also be used in informal situations, but it sounds a bit more serious than "不好意思."
Other:
* 没关系 (méi guān xí) - This literally translates to "it doesn't matter" and is often used as a response to someone apologizing. It can also be used to say "sorry" in certain situations, particularly if you are apologizing for a minor inconvenience.
* 请原谅 (qǐng yuán liàng) - This is a very formal way to say "please forgive me." It is rarely used in everyday conversation.
It's important to remember that the best way to say "sorry" in Chinese will depend on the specific situation. If you're unsure, it's always best to err on the side of formality.