xiān / sheng / mù / mù / yǐ / gǒng / kě / shì / tā / de / jiào / huì / wǒ / shǐ / zhōng / bù / gǎn / wàng / jì

先生墓木已拱，可是他的教诲我始终不敢忘记。

The gentleman has been dead for many years, but I have never dared to forget his teachings.