teach的過去式是

taught作為動詞：教育；教( teach的過去式和過去分詞 )；教書；訓練。

例句：1、He taught science and maths.

他教科學和數學這兩門課。

2、Their daughter's death had taught him humility.

他們女兒的死使他學會了謙遜。

3、I taught myself how to play the piano.

我自學了彈鋼琴。