How do you say go first in Mandarin Chinese?

There are a few ways to say "go first" in Mandarin Chinese, depending on the context:

Formal:

* 你先 (nián xiān): This literally means "you first" and is a polite way to ask someone to go before you.

* 请您先 (qǐng nín xiān): This is even more formal and polite, adding "please" to the phrase.

Informal:

* 你先走 (nián xiān zǒu): This means "you go first" and is a more casual way to say it.

* 你先 (nián xiān) + action verb: You can add the action verb after "you first" to be more specific. For example, "你先上车 (nián xiān shàng chē)" means "you get on the car first."

Example situations:

* At a restaurant: "请您先点菜 (qǐng nín xiān diǎn cài)" - "Please order your food first."

* Passing through a doorway: "你先走 (nián xiān zǒu)" - "You go first."

* In a line: "你先来 (nián xiān lái)" - "You go first."

Remember to use the appropriate level of formality depending on the situation and your relationship with the other person.