The past participle is equivocated.
The present participle is equivocating.
The past participle of "form" is "formed."
She tried to equivocate when asked about her involvement in the incident, but her shifting explanations only made her appear more suspicious.
The past participle form of wear is worn.
The past participle form of "give" is "given".
The past participle form of "laugh" is "laughed."
The present participle form of "talk" is "talking."
The past participle form of "rely" is "relied."
If you are referring to "can" as in "to be able to", then the past participle is could. If you are referring the "can" as in "fires" (i.e. The boss cans anyone who doesn't answer her emails immediately) then the past participle is canned.The past participle is the verb in its past tense form.
Sent is the past participle of send.
The past participle form of 'introduce' is 'introduced.'
The past participle form of "grew" is "grown."
The past participle form of "culture" is "cultured," and the present participle form is "culturing."