TENSES CHART:

http://www.englishtenses.com/tenses/past_perfect

http://esl.about.com/od/grammarstructures/ig/Tenses-Chart/pastperfect.htm

GRAMMAR:

http://www.ego4u.com/en/cram-up/grammar/past-perfect-simple

http://www.englisch-hilfen.de/en/exercises/tenses/past_perfect.htm

WRITING:

short story:Mini sagas

https://www.youtube.com/watch?v=W0HEqI3pJIM

https://www.youtube.com/watch?v=jUbVH20qW0A

https://www.youtube.com/watch?v=xjKruwAfZWk