Used to express completed action, whether in the past, present or future. Normally translated by the past tense (קָטַל he killed). With Waw Conversive, it is usually translated by the future tense (וְקָטַל and he will kill). 2. Imperfect (Prefix Conjugation). Used to express incomplete action, whether in the past, present or future. Normally translated by the future tense (יִקְטֹל he will kill). It may also be rendered with certain modal or volitional values (would, could, should, may, might, can,