The Imperfect Tense of AR, ER and IR Verbs (contrasted with Present and Preterite)

This is a great resource for your more able students. It clearly demonstrates how to form the Imperfect Tense of regular (and the 3 irregular) verbs in Spanish and it makes the meaning clear, too. In addition, the Present and Preterite Tenses are revisited and there are exercises which involve using these 2 tenses alongside the Imperfect Tense: 'I was doing ..... when .....' and 'I used to ..... but now I .....'
There is an exercise on 'I only do, read, study' etc. using 'sólo' as well as an exercise on 'I no longer go, watch, read' etc. using 'ya no'.
To differentiate effectively, I introduce the vocabulary which will be needed in the more difficult translation exercises prior to the task. There is 1 answer sheet so that students can mark their own work. The worksheets come in a 'tú' and an 'vd.' version.

These worksheets have been meticulously designed and are at least as nicely presented as any resource you might buy from a respectable publisher. Please don't be put off by the preview image which at times looks distorted with text not fitting into boxes or lines missing from tables (due, I think, to the inclusion of tables/grids/text boxes); the actual resource looks professional in appearance when downloaded.

Any feedback would be appreciated.