Formal:
* 不 (bù): This is the most common and general way to say "no." It's used in most situations and is considered neutral in tone.
* 没有 (méiyǒu): This literally means "not have" and is used to express the absence of something. For example, "我没有时间" (méiyǒu shíjiān) means "I don't have time."
Informal:
* 别 (bié): This means "don't" and is used to give commands or make requests. For example, "你别走" (bié zǒu) means "Don't go."
* 不要 (búyào): This is a more emphatic version of "别" and also means "don't."
* 不行 (bù xíng): This means "not possible" or "not allowed" and is often used to refuse a request or suggestion.
Other ways to express "no" in Chinese:
* 不行 (bù xíng): This means "no way" or "not allowed."
* 不可能 (bù kěnéng): This means "impossible."
* 没 (méi): This is a shortened form of "没有" (méiyǒu) and is used in informal situations.
The best way to express "no" in Chinese will depend on the context and the relationship between the speaker and the listener.