Palabras con Significados Diversos Entre Pretérito y Imperfecto

	Pretérito	Imperfecto
Conocer	to meet	to know to be acquainted with
Saber	to find out	to know facts
Poder	to be able to try and succeed	to be able to no knowledge of success
No Poder	to try but fail	to be incapable of
Querer	to try but fail	to want
No Querer	to refuse	not to want
Tener	to recieve	to have
tener que	to have to, and do	to have the obligation to
costar	to cost, be bought for	to cost, be available for