There is no present tense form of the verb "laugh" that includes a past participle of "laugh" except in a strained passive voice construction such as, "His reply was loudly laughed".
Present tense: laugh Past participle: laughed
Present tense: lead Present participle: leading Past tense: led Past participle: led
The past tense of laugh is "laughed" and the past participle is also "laughed."
Present tense: strike Past tense: struck Past participle: struck
Present tense: am Past tense: was Past participle: been
Past tense: bit Present participle: biting Past participle: bitten
The present participle is laughing. The past tense is laughed. The past participle is laughed.
Laughed
Present tense: lead Present participle: leading Past tense: led Past participle: led
The past tense of laugh is "laughed" and the past participle is also "laughed."
The past participle is done. The simple past tense is did. The present participle is doing.
The past tense and past participle is equipped; equipping is the present participle.
Laughed is the past participle (as well as the simple past tense).
Present tense: strike Past tense: struck Past participle: struck
Present: seek Past: sought Past participle: sought
The past tense is brought. The past participle is brought. The present participle is bringing.
Present participle: pulling Past tense: pulled Past participle: pulled
Past tense: bit Present participle: biting Past participle: bitten