4 sentences

1. 他们决定私奔到远方。

   tā​men jué​dìng sī bēn dào yuǎn​fāng.

   They decided to elope to a distant place.

   Source: Dong Chinese Dictionary

2. 他竟敢私自拿走公司的重要文件，真是太胆大了。

   tā jìng gǎn sī zì ná​zǒu gōng​sī de zhòng​yào wén​jiàn, zhēn shì tài dǎn​dà le.

   He was so bold as to take important company documents without permission.

   Source: Dong Chinese Dictionary

3. 他一心只顾私利，不顾集体利益。

   tā yī​xīn zhǐ gù sī lì, bù gù jí​tǐ lì​yì.

   He cares only about his own interests, ignoring the interests of the collective.

   Source: Dong Chinese Dictionary

4. 我们要坚决打击营私舞弊的行为。

   wǒ​men yào jiān​jué dǎ​jī yíng sī wǔ​bì de xíng​wéi.

   We must resolutely crack down on acts of job-related malpractice for personal gain.

   Source: Dong Chinese Dictionary