Question

cuando usar was were y did

Answer 1

-el DID lo usas en las preguntas solamente. Ejemplo: did you buy a bike?=compraste una bici? (Despues del did en la pregunta el verbo va en infinitivo)

-el DIDN'T lo usas para oraciones negativas:I didn'y buy a bike=yo no compre una bici. No varía en tercera persona

-el WAS es el verbo TO BE(is/are)en pasado:

-el WERE es lo mismo que el was la diferencia es que el was se usa para lo singular y el were para lo plural y el YOU, ej: where were they last night?=donde estaban ellos anoche?