Formal:
* 您怎么样 (nín zěnme yàng): This is the most formal way to ask "How are you?". It's used for elders, people in authority, and strangers.
* 您最近好吗 (nín zuì jìn hǎo ma): This is also a formal way to ask "How are you?", but it implies "How are you doing recently?".
Informal:
* 你好吗 (nǐ hǎo ma): This is the most common way to ask "How are you?" in casual conversation. It's used for friends, family, and people you know well.
* 怎么样 (zěnme yàng): This is a more informal way to ask "How are you?" and can be used in many situations.
Other options:
* 你身体好吗 (nǐ shēntǐ hǎo ma): This means "How is your health?".
* 你工作怎么样 (nǐ gōngzuò zěnme yàng): This means "How is your work going?".
* 你最近在做什么 (nǐ zuì jìn zài zuò shénme): This means "What have you been up to lately?".
Remember to use the appropriate tone and formality depending on the context. For example, you wouldn't use "你好吗" (nǐ hǎo ma) to ask a teacher or boss "How are you?".