teach的過去式是什麼

　　雙語例句

　　1.The trainers have a programme to teach them vocational skills.

　　培訓師計劃教他們一些職業技能。

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

　　他們女兒的死使他學會了謙遜。

　　3.Ingrid is currently teaching Mathematics at Shimla Public School.

　　英格麗德目前在希姆拉公立學校教數學。