一些 + Noun
一些 means "some" or "a few" and is used before a noun to indicate an indefinite quantity. It functions as a determiner-like modifier. For example, 一些人 means "some people" and 我买了一些水果 means "I bought some fruit."
我认识一些在北京工作的朋友。
wǒ rènshi yìxiē zài běijīng gōngzuò de péngyǒu.
I know some friends who work in Beijing.
桌子上有一些零钱。
zhuōzi shàng yǒu yīxiē língqián.
There is some loose change on the table.
老师给了我们一些建议。
lǎoshī gěi le wǒmen yīxiē jiànyì.
The teacher gave us some advice.