Used in questions and negative sentences to mean some amount or number of something.
Do you have any questions about the lesson?
关于这节课,你有什么问题吗?
Used to mean one thing or person when it doesn't matter which one.
You can choose any book from the shelf.
你可以从书架上选择任何一本书。
Used to show that something is special or not ordinary.
This isn't just any cake—it's my grandmother's special recipe!
这可不是普通的蛋糕——这是我祖母的特别配方!
Used in questions and negative sentences to mean some amount or number.
I need sugar. Do you have any?
我需要糖。你有吗?
Used to mean one or more things when it doesn't matter which ones.
If you have extra tickets, I'll take any.
如果你有多余的票,我随便哪张都要。
Used to mean 'at all' in questions and negative sentences.
Is the pain any better today?
今天疼痛好点了吗?
Used at the end of negative sentences to mean 'at all'.
The medicine didn't help me any.
这药对我一点用都没有。