22 december 2011 / Lara Ivanuša

http://esl.about.com/library/weekly/aa011201a.htm (his timeline tenses chart provides a handy reference sheet to English tenses and their relationship to one another and the past, present and future.)

http://www.ego4u.com/en/cram-up/grammar/passive (there you can learn where you can use passive voice and you can see form of passive.)

http://www.ego4u.com/en/read-on/animals/snowboarding?param=&mark=simpapassiv (There is a grammar in text. This is „History of Snowboarding“ and it can show you how to use Passive Voice in practice.

http://svet-anglescine.com/kategorija/271/Trpnik_Passive_Voice (Slovenian definition of passive voice)