Past tense - was/were.
Past participle - been.
The past participle of am is been. Not does not have a past participle
The past participle of do is done. The past participle of have is had.
The past participle of the word "have" is "had."
The past tense and the past participle is "answered".
The past participle of have is had....:) I have had...
The past and past participle for "buy" is "bought."
The past participle of "was" is "been" and the past participle of "were" is also "been".
Being is the present participle. The past participle is been.
The past participle is thought.
Eating is the present participle; eaten is the past participle.
Present participle: developing Past form: developed Past participle: developed
Present participle: talking Past participle: talked