3 sentences

1. 我可以给你打个折扣。

   wǒ kě​yǐ gěi nǐ dǎ ge zhé​kòu.

   I can give you a discount.

   Source: OpenSubtitles

2. 我帮你打了很大的折扣。

   wǒ bāng nǐ dǎ le hěn dà de zhé​kòu.

   I gave you a big discount.

   Source: OpenSubtitles

3. 有时候他是对的，不过，通常听他的预测要打折扣。

   yǒu shí​hou tā shì duì de, bù​guò, tōng​cháng tīng tā de yù​cè yào dǎ zhé​kòu.

   Sometimes he is right, but usually his predictions have to be taken with a grain of salt.

   Source: UM-Corpus: News