Translation of "Enseñaban" in English

Me enseñaban a hacer chanchullos.

- I was being taught to cheat.
- I was taught to pull a fast one.

Jugaba con los chicos, me enseñaban lengua de señas,

I'd play with the kids, they'd teach me sign language,

Pero, ¿por qué a mis 20 años me enseñaban cómo caminar?

But why in my early 20s was I being taught how to walk?