2 sentences

1. 他们自以为了解我。

   tā​men zì​yǐ​wéi liǎo​jiě wǒ.

   They think they know me.

   Source: OpenSubtitles

2. 你自以为很聪明。

   nǐ zì​yǐ​wéi hěn cōng​ming.

   You think you're so smart.

   Source: OpenSubtitles