3 sentences

1. 他决定给公司改名。

   tā jué​dìng gěi gōng​sī gǎi​míng.

   He decided to rename the company.

   Source: Dong Chinese Dictionary

2. 你干嘛改名？

   nǐ gàn​má gǎi​míng?

   Why'd you change your name?

   Source: OpenSubtitles

3. 我改名了。

   wǒ gǎi​míng le.

   I've changed my name.

   Source: OpenSubtitles