In order to express "some", you can use "一些" (yìxiē). It is mostly used to modify an object, but it can also be used to modify subjects as well.

Examples

Nǐ ké yǐ ɡěi wǒ yì xiē qián mɑ?
你 可以 给 我 一些 钱 吗？
Can you give me some money?

Tā de pénɡ you yǒu yì xiē zhōnɡ wén shū.
她 的 朋友 有 一些 中文 书。
Her friend has some Chinese books.