以至于

他的能力以至于可以完成这项艰巨的任务。

tā de nénglì yǐzhì kěyǐ wánchéng zhè xiàng jījùnde rènwù.

His ability is such that he can complete this arduous task.

以至于他不得不承认失败。

yǐzhì tā bù dé róngnéng chóng rèn shībài.

He had to admit his defeat.