Is ruined a gerund, inifintive, or participle?

Question

Is ruined a gerund, inifintive, or participle?

Answer 1

Jay D. is correct. "Ruined" is in the past participle form. The infinitive would be "to ruin," and the gerund form would be "ruining" (and whether it's a gerund would depend on how it functions within the sentence, ie. as a noun or verb).

Answer 2

Hello! I believe it's a participle. If you need more help, please send me a message. We can set up a session!

Answer 3

It depends how you use it. If you say, "I ruined the surprise," then it's simply past tense. If you say "He had ruined the surprise," then it's a past participle.