3 sentences

1. 他的老母亲依然健在。

   tā de lǎo mǔ​qīn yī​rán jiàn​zài.

   His elderly mother is still alive and well.

   Source: Dong Chinese Dictionary

2. 你爸爸还健在吗？

   nǐ bà​ba hái jiàn​zài ma?

   Is your father still alive?

   Source: OpenSubtitles

3. 听说你的爷爷虽然已经九十岁了，但依然健在，真是好福气。

   tīng​shuō nǐ de yé​ye suī​rán yǐ​jīng jiǔ​shí suì le, dàn yī​rán jiàn​zài, zhēn shì hǎo fú​qi.

   I heard your grandfather is still alive and well at ninety years old; you are truly blessed.

   Source: Dong Chinese Dictionary