我买了一把梳子。

Wǒ mǎi le yì bǎ shūzi.

I bought a comb.

我忘记带梳子了，能借一下吗？

Wǒ wàngjì dài shūzi le, néng jiè yīxià ma?

I forgot to bring a comb, can I borrow one?

梳子掉到地上了，你帮我捡一下好吗？

Shūzi diào dào dìshàngle, nǐ bāng wǒ jiǎn yīxià hǎo ma?

The comb fell on the ground, can you help me pick it up?