Liú / lǎo shī / de / lǎo shī / jiù shì / wǒ / de / shī yé / jīn tiān / tè yì / lái / kàn / wǒ men / shàng kè

刘老师的老师就是我的师爷，今天特意来看我们上课。

My teacher's teacher is my grand-teacher, and he came specially today to observe our class.