This is the 301st most frequent Chinese word.
有的
"有的" means "some" or "some of."
有的 is used here to mean 'some' as a determinative referring to people (人) from a larger group.
有的人喜欢夏天，有的人喜欢冬天。
Some people like summer, and some people like winter.
有的 is used to denote 'some' items (书) among a specific collection.
这里有的书是新的，有的是二手的。
Some of the books here are new, and some are second-hand.
有的 is employed to indicate 'some' students (同学) engaging in different actions.