代だい稽げい古こ

noun

substitute teaching; teaching in place of the regular instructor

Used when someone teaches a lesson (often in traditional arts, martial arts, or private tutoring) on behalf of the usual teacher.

• 先せん生せいが病びょう気きなので、今日きょうは代だい稽古げいこをお願ねがいします。

  Since the teacher is ill, please do the substitute teaching today.

• 代だい稽古げいこを頼たのまれたが、同おなじ流りゅう派はの者ものでないと難むずかしい。

  I was asked to do substitute teaching, but it's difficult unless you belong to the same school.