這是我昨天買(mǎi)的，不能用?

Zhè shì w? zuótiān m?i de, bù néng yòng.

I bought it yesterday, but it doesnt work.

Dialogue

A: 這是我昨天買(mǎi)的，不能用?

Zhè shì w? zuótiān m?i de, bù néng yòng.

I bought it yesterday, but it doesnt work.

B: 讓我看看?

Ràng w? kànkan.

Let me have a look.