这家店今天打折。
zhè jiā diàn jīntiān dǎzhē 。
This store is having a sale today.
如果你买三件衣服,店里会打折。
rúguǒ nǐ mǎi sān jiàn yīfú , diàn lǐ huì dǎzhē 。
If you buy three pieces of clothing, the store will give you a discount.
我想知道这个商品打折吗?
wǒxiǎng zhīdào zhègè shāngpǐn dǎzhē ma ?
I want to know if this product is on discount.