We state the adjective 有的 before a noun to refer to some group of people or objects.
Examples
有的孩子对牛奶过敏
Some children are allergic to milk
yǒude háizi duì niúnǎi guòmǐn
This adjective also can be used in the structure 有的A有的B
It contrasts one group with another. For example: “Some people like coffee and others like tea”.
Pay attention
In place of "A" and "B", we can state any part of a sentence such as subjects, predicates, circumstances or objects.
Examples
晚上六点以后,有的人下班了, 有的人在加班
After 6:00 p.m., some people are leaving work, and some are working overtime