Yes, it is the past participle of the verb train.
I have trained hard for the event.
Yes, "trained" can function as a participle in the sentence "The trained dog performed well at the show."
The word "trained" can be both a participle and a gerund depending on its use in a sentence. As a participle, it functions as an adjective (e.g., "the trained dog"). As a gerund, it functions as a noun (e.g., "training is important").
The past participle of the word "have" is "had."
The past participle of the word "do" is "done."
The past participle of the word "Find" is the word "Found."
The past participle of the word "pick" is "picked".
Trained.
The word "trained" can be both a participle and a gerund depending on its use in a sentence. As a participle, it functions as an adjective (e.g., "the trained dog"). As a gerund, it functions as a noun (e.g., "training is important").
The past participle is trained.
The past participle of the word "have" is "had."
No, the word old is an adjective, not a participle.
The past participle of the word "pick" is "picked".
The present participle of the word "go" is "going."
The present participle for the word 'hit' is 'hitting'.
The past participle of the word "finish" is "finished."
No. The word "vast" is a straightforward adjective, not a participle.
The past participle of the word "Find" is the word "Found."
The past participle of the word "touch" is "touched."