explanation (Sp)

http://personales.ya.com/mjandres/archivos/Present%20continuous.pdf

 

exercises:

http://agendaweb.org/verbs/present_continuous-exercises.html

games:

http://www.eslgamesworld.com/members/games/grammar/present%20tenses/present%20tenses%20snakes%20and%20ladders.html

video:

http://www.youtube.com/watch?v=SzL6Ww7xUWc&feature=youtu.be