2 sentences

1. 他经常向老师告状。

   tā jīng​cháng xiàng lǎo​shī gào​zhuàng.

   He often complains to the teacher about others.

   Source: Dong Chinese Dictionary

2. 他决定去法院告状，以此维护自己的权益。

   tā jué​dìng qù fǎ​yuàn gào​zhuàng, yǐ cǐ wéi​hù zì​jǐ de quán​yì.

   He decided to go to court and file a lawsuit to protect his rights.

   Source: Dong Chinese Dictionary