e,am ,is -was -been
are-were -been
begin-began -begun
break-broke-broken
bring-brought-brought
build-built-built
buy-bought-bought
can-could
catch-caught -caught
come-came -come
do-did -done
draw-drew -drawn
drink-drank -drunk
drive-drove-driven
eat-ate -eaten
fall-fell-fallen
feed-fed -fed
feel-felt-felt
find-found -found
fly-flew -flown
forget-forgot -forgetten
get-got -gotten
go-went-gone
have,has-had -had
hear-heard -heard
hold-held-held
keep-kept-kept
knoe-knew -known
learn-learnt,learned -learnt,learned
leave-left-left
let-let-let
make-made-made
may-might
mean-meant -meant
meet-met-met
must-must
put-put -put
read-read -read
ride-rode -ridden
ring-rang -rung
run-ran -run
say-said -said
see-saw -seen
sell-sold -sold
shall-should
sing-sang-sung
sit- sat-sat
sleep-slept -slept
speak-spoke -spoken
stand-stood -stood
swim-swam -swum
take-took -taken
teach-taught -taught
tell-told -told
think-thought -thought
throw-threw -thrown
understand-understood -understood
will-would
win-won-won
write-wrote-written
第一组是原形,第二组是过去式,第三组是过去分词,第三组没写的就是没有过去分词的.