Most verbs with double past participle
are not very used (old fashioned)
but there are yet a good number of them
very common in our lives...
Take a look at this curiosity in the verb: "come":
[COME / CAME / COME] - irregular
[beCOME / beCAME / beCOME] - irregular
[welCOME / welCOMEd / welCOMEd] - regular
"Sometimes they are different verbs, or are used in different ways.
In some cases, the regular form is preferred in AmE, the irregular in BrE.
Examples (with the irregular form) include: burn/burnt, dream/dreamt, dwell/dwelt, earnt/earnt/, kneel/knelt, lean/leant, leap/leapt, learn/learnt, smell/smelt, spell/spelt, spill/spilt/, spoil/spoilt.
In some, the past simple and past participle forms are the same as the base forms in AmE; BrE prefers the regular form. Examples include:fit and knit. I'll stop there. I think the only guidance I can give is to follow the usage of the community in which you find yourself."
bet - bet/betted - bet/betted
broadcast - broadcast/broadcasted - broadcast/broadcasted
burn - burned/burnt - burned/burnt
bust - busted/bust - busted/bust
clothe - clothed/clad - clothed/clad
daydream - daydreamed/daydreamt - daydreamed/daydreamt
dwell - dwelt/dwelled - dwelt/dwelled
fit - fitted/fit - fitted/fit
hang (kill by hanging) - hanged/hung - hanged/hung
heave - heaved/hove - heaved/hove
input - input/inputted - input/inputted
kneel - knelt/kneeled - knelt/kneeled
knit - knitted/knit - knitted/knit
lean - leaned/leant - leaned/leant
leap - leaped/leapt - leaped/leapt
learn - learned/learnt - learned/learnt
light - lit/lighted - lit/lighted
mow - mowed - mowed/mown
output - output/outputted - output/outputted
plead - pleaded/pled - pleaded/pled
prove - proved - proven/proved
quit - quit/quitted - quit/quitted
sew - sewed - sewn/sewed
shave - shaved - shaved/shaven
shear - sheared - sheared/shorn
shine - shined/shone - shined/shone
shit - shit/shat/shitted - shit/shat/shitted
show - showed - shown/showed
slay (kill) - slew/slayed - slain/slayed
slink - slinked/slunk - slinked/slunk
smell - smelled/smelt - smelled/smelt
sow - sowed - sown/sowed
speed - sped/speeded - sped/speeded
spell - spelled/spelt - spelled/spelt
spill - spilled/spilt - spilled/spilt
spoil - spoiled/spoilt - spoiled/spoilt
strew - strewed - strewn/strewed
strip - stripped/stript - stripped/stript
strive - strove/strived - striven/strived
swell - swelled - swollen/swelled
thrive - thrived/throve - thrived/thriven
wake - woke/waked - woken/waked
weave - wove/weaved - woven/weaved
wet - wet/wetted - wet/wetted
I know how you feel. You are a learner. You want definite "rules" to follow.
(1) Unlike France or Spain, we here in the United States do not have an official
academy to decide which past participle is "correct."
(2) Therefore, we are usually guided by what good newspapers use or by
books of English usage.
(3) Some Americans, for example, follow the recommendations by Mr. Bryan A.
Garner, who has written a book entitled A DICTIONARY OF MODERN AMERICAN
USAGE.
(a) For example, today I heard someone say "wetted." I was not sure if the
"correct" past and past participle forms were "wet" or "wetted," so I turned to his book.
Mr. Garner says "wet" is INFERIOR to "wetted." Therefore, whenever I need to say or
write that word, I shall use "wetted." I have simply decided to accept his decision.
That gives me peace of mind.
(4) I suggest you do the same: find a source that you respect and follow its
recommendations. Then you will feel better, too.
BY THE WAY: Mr. Garner says "wet" is idiomatic (the way native speakers speak) in two
exceptions:
He wet his whistle with a couple of beers. ( = He satisfied his thirst.)
Little Bobby has wet his bed again. (Of course, everyone understands what that means!!!)
