Preterite vs. Imperfect. Both the preterite and imperfect explain past actions, but they are used in different situations to mean different things. - ppt download
Spanish English Verb TENER Imperfect tense (Past)||Español Inglés Verbo TENER Imperfecto - YouTube
Tenses review: present, preterit, imperfect, ir + a and tener + que infinitive | Teaching Resources