tā / bù / jǐn / bù / gǎn / xiè / bāng / zhù / guò / zì / jǐ / de / rén / fǎn / ér / wéi / ēn / fù / yì / de / shāng / hài / le / duì / fāng

他不仅不感谢帮助过自己的人，反而违恩负义地伤害了对方。

Instead of thanking those who helped him, he repaid their kindness with harm.