If by "lay" is meant the present indicative and infinitive form of "to lay", a transitive verb, the past participle is "laid". "Lay", however, is also the past indicative form of the irregular and intransitive verb "to lie", and if that is the meaning of "lay", it, like other past tense verbs, has no participle of its own; the past participle of this meaning of "lie" is lain.
The past participle of "lay" is "laid." For example, "I had laid the book on the table."
The past participle is laid.
If by "lay" is meant the present indicative and infinitive form of "to lay", a transitive verb, the present participle is "laying". "Lay", however, is also the past indicative form of the irregular and intransitive verb "to lie", and if that is the meaning of "lay", it, like other past tense verbs, has no participle of its own.
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
The past participle of "do" is "done."
The past tense of "have" is "had," and the past participle is also "had."
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."
Being is the present participle. The past participle is been.
Eating is the present participle; eaten is the past participle.
The past participle is thought.
"Did" is the past and "done" is the past participle.
The past participle is had.
The past participle of "do" is "done."
The past participle is done. The simple past tense is did. The present participle is doing.
Present Participle of pull is pulling, past is pulled, and past participle is have pulled