lǎo / shī / yǐ / jīng / tí / xǐng / tā / hěn / duō / cì / le / kě / tā / hái / shì / lǚ / jiào / bù / gǎi

老师已经提醒他很多次了，可他还是屡教不改。

The teacher has reminded him many times, but he still refuses to mend his ways.