Question

como se usa was y were en negativo , .

Answer 1

Se usa para was es wasn t el negativo .
Se usa para el were es weren t el negativo.

Answer 2

Was y were es el verb to be en pasado fui y/o estuve depende el pronombre was se usa con I, he, she y it, were con they, we y you, el orden de ubicación de was y were dependen de la oración si es affirmativa , neg, interr o con palabras de wh.