Drawn is the past participle of draw.
draw drew drawn
They have drawn self portraits.
Present - I/You/We/They draw. He/She/It draws. The present participle is drawing. Past tense - drew. Future tense - will draw. going to draw. am/is/are drawing - I am drawing my picture tomorrow
The past participle of "am not" is "have not been."
The past participle of "do" is "done." The past participle of "have" is "had."
The past tense of "have" is "had," and the past participle is also "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: talking Past participle: talked
"Did" is the past and "done" is the past participle.
The past participle is had.