Questions & Answers about Я благодарен другу за помощь.
Благодарен is an adjective, not a verb.
More precisely, it is a short-form adjective meaning “(am) grateful / thankful.”
So:
- Я благодарен ≈ “I am grateful / I am thankful.”
- It describes a state of the subject (я), just like English “I am happy / I am tired / I am grateful.”
The verb “to thank” is благодарить (e.g. я благодарю – “I thank”).
So:
- Я благодарен другу за помощь. = “I am grateful to my friend for the help.”
- Я благодарю друга за помощь. = “I thank my friend for the help.”