4 sentences

1. 你怎么能说这么难听的话？

   nǐ zěn​me néng shuō zhè​me nán​tīng de huà?

   How could you say such unpleasant things?

   Source: Dong Chinese Dictionary

2. 他在大家面前故意说些难听的话来糟蹋我。

   tā zài dà​jiā miàn​qián gù​yì shuō xiē nán​tīng de huà lái zāo​tà wǒ.

   He intentionally said nasty things in front of everyone to humiliate me.

   Source: Dong Chinese Dictionary

3. 他唱歌的声音很难听。

   tā chàng​gē de shēng​yīn hěn nán​tīng.

   His singing voice is awful.

   Source: Dong Chinese Dictionary

4. 这种丑事传出去太难听了。

   zhè zhǒng chǒu​shì chuán​chū​qù tài nán​tīng le.

   It would be shameful if this scandal got out.

   Source: Dong Chinese Dictionary