3 sentences

1. 你真可耻。

   nǐ zhēn kě​chǐ.

   Shame on you.

   Source: OpenSubtitles

2. 这种恶意欺骗老年人的行为实在是太可耻了。

   zhè zhǒng è​yì qī​piàn lǎo​nián​rén de xíng​wéi shí​zài shì tài kě​chǐ le.

   This behavior of maliciously deceiving the elderly is truly shameful.

   Source: Dong Chinese Dictionary

3. 他出卖了组织的秘密，被大家视为可耻的叛徒。

   tā chū​mài le zǔ​zhī de mì​mì, bèi dà​jiā shì​wéi kě​chǐ de pàn​tú.

   He sold out the organization's secrets and is seen by everyone as a shameful traitor.

   Source: Dong Chinese Dictionary