The past tense and past participle is equipped; equipping is the present participle.
Designed is both the simple past and the past participle of 'design'.
The past participle is repaired.
The past participle is "designed".
Steel is a noun and so doesn't have any verb tenses.The past participle of the verb steal is stolen.
"invented" is a verb. It is the past tense or the past participle of "to invent".
The word 'invented' is the past participle, past tense of the verb to invent. The past participle of the verb also functions as an adjective.Examples:This device was invented by my grandfather. (verb)A recently invented version runs on solar power. (adjective)The noun forms of the verb to invent are inventor, invention, and the gerund, inventing.
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 the word "have" is "had."
The past participle of "am, are, is" is "been."
The past participle of "will" is "willed."
The past participle is thought.
The past participle of "to" is "been." The past participle of "be" is also "been."
Being is the present participle. The past participle is been.