Formal:
* 歡迎 (huānyíng): This is the most common and formal way to say "welcome." It's used in most situations, like welcoming someone to a shop or event.
Informal:
* 歡迎光臨 (huānyíng guānglín): This is a more polite way to say "welcome" and is commonly used in shops and restaurants. It literally means "welcome to visit."
* 歡迎來到 (huānyíng láidào): This translates to "welcome to" and can be used in various informal settings. For example, you could say "歡迎來到我的家 (huānyíng láidào wǒ de jiā)" which means "Welcome to my home."
Other options:
* 你好 (nǐ hǎo): This means "hello" and can also be used as a casual greeting.
* 請進 (qǐng jìn): This means "please come in" and is a polite way to invite someone into a space.
The best way to say "welcome" depends on the situation and your relationship with the person you're greeting.