how to use "一点儿"

我会说一点儿汉语。Wǒ huì shuō yī diǎnr hàn yǔ.-------------I can speak a little bit Chinese.

我要去超市买一点儿东西。Wǒ yào qù chāoshì mǎi yìdiǎnr dōngxi.

I need to go to the supermarket to buy a little bit of something.

一点儿 + 名词yìdiǎnr + n