Desde, desde hace y hace

This document explains in detail the differences between these temporal expressions (desde, desde hace y hace), which are difficult for students to understand and to use. Students needs to have a intermediate level because includes when to use the preterit (and the imperfect - this one can be avoid if necessary). After the grammatical explanations there are three different activities to practice what they have learnt. The first activity is to choose the right answer, the second is to write the correct answer and the third one is to practice conversation using these temporal expressions. Includes the key answers of the activities.