那nà 位wèi 老lǎo 先生xiānsheng 在zài 浇水jiāoshuǐ。nà wèi lǎo xiānsheng zài jiāoshuǐ.That elderly gentleman is watering the plant.Breakdown of nà wèi lǎo xiānsheng zài jiāoshuǐ.在zàizàiprogressive marker那nànàthat位wèiwèipolite person classifier先生xiānshengxiānshengMr.; sir