http://www.engvid.com/english-grammar-subjunctive/ http://www.engvid.com/wish-subjunctive/
http://www.esl-lounge.com/student/grammar/4g7-wishes-and-regrets.php
http://www.flo-joe.co.uk/fce/students/strategy/transfrm/pasts.htm (Transformations)
http://www.learn-english-today.com/lessons/lesson_contents/exercises/wish-if%20ex.html
