在世

dàng nián de lǎo rén zài shì de yǐ jīng bù duō le

当年的老人在世的已经不多了。

Few of the elders then remain alive now.

tā zài shì de shí hou

她在世的时候

in her lifetime

rú guǒ nǐ mā hái zài shì

如果你妈还在世

if your mother was still alive