The injured cyclist was helped by a passerby. Here 'helped' is a/an -

• The injured cyclist was helped by a passerby. Here 'helped' is a - Participle/ Past Participle.
• A participle is a verb that ends in -ing (present participle) or -ed, -d, -t, -en, -n (past participle). Participles may function as adjectives, describing or modifying nouns.
- Participle একই সাথে Verb ও Adjective এর কাজ করে।

• Participle মূলত: তিন প্রকার: 
1. Present Participle. Ex: Do not disturb a sleeping dog. 
2. Past Participle. Ex: This is a book written by Charles Dickens. 
3. Perfect Participle. Ex: Having eaten rice, he went to bed. 
- সাধারণত মূল Verb-এর সাথে ed যুক্ত হয়ে past participle গঠিত হয়।
- যেমন work-worked।