https://3asafeer.com/en/learn/104/the-passive-participle-and-how-to-form-it-from-triliteral-verbs-sound-and-weak
The Passive Participle and How to Form It from Triliteral Verbs (Sound and Weak) | Grammar |...
Simple lesson on the passive participle from regular and weak triliteral verbs for Grade 9, with patterns, rules, examples and exercises plus sentence use
passive participleand howformtriliteralverbs