正常聊天怎么说晚安英语

To say "good night" in English, you can simply say "good night." You can also add "sleep well" or "have a good night's rest" for a more formal or polite way of saying it. Here are a few examples:
Good night.
Good night, sleep well.
Have a good night's rest.
I hope you have a good night's sleep.
You can also use "goodbye" as a way of saying "good night," particularly if you are leaving the conversation or ending the day's interactions.
Example:
Goodbye, have a good night.
You can also use "sweet dreams" as a way of saying "good night" and expressing the hope that the person will have pleasant dreams.
Example:
Good night, sweet dreams.