Fun isn't a verb, so it doesn't have a past or present participle.
"Encouraged" is the simple past and past participle of the verb "encourage".
Increased is the past tense of increase.
Present participle - doing. Past participle - done.
The present and past particle of the butterfly is butterflies. butterfly is a noun and doesn't have a present and past participle
Write is the present tense. The past tense is wrote, and the past participle is written.
Brought is the simple past and past participle of bring.
do/did/done - present - past - past participleI do the dishes everyday. (present)I did the dishes this morning. (past)I have done the dishes all week. (past participle)
'Fun' is not a verb.
Past is : Beat (itself) Past Particle : Beaten
As it does not have a third form (A Past Particle) we must replace CAN with TO BE ABLE TO. Therefore, the Present Perfect of CAN is HAS/HAVE BEEN ABLE TO.
get
That could be: present continuous eg -- am watching, is listening, are going past continuous eg -- was watching, were going.