Tener, Saber, Conocer in the Imperfect
There are words that change their meaning when put into the preterite tense from the present. These words change BACK to their original meaning when put in the imperfect.
|conocer||conozco (I know)||conocí (I met)||conocía (I knew)|
|saber||sé (I know)||supe (I found out)||sabía (I knew)|
|tener||tengo sed (I’m thirsty)||tuve sed (I got thirsty)||tenía sed (I was thirsty)|