3 sentences

1. 至少我会承认错误、努力改正。

   zhì​shǎo wǒ huì chéng​rèn cuò​wù, nǔ​lì gǎi​zhèng.

   At least I admit my mistakes and try to correct them.

   Source: OpenSubtitles

2. 犯了错误以后，应当及时改正。

   fàn le cuò​wù yǐ​hòu, yīng​dāng jí​shí gǎi​zhèng.

   One should correct their mistakes as soon as they are made.

   Source: Dong Chinese Dictionary

3. 老师让他改正作业里的错字，他偏偏不听。

   lǎo​shī ràng tā gǎi​zhèng zuò​yè lǐ de cuò​zì, tā piān​piān bù tīng.

   The teacher told him to correct the typos in his homework, but he stubbornly refused to listen.

   Source: Dong Chinese Dictionary