am(was/been)
beat(beat/beaten)
begin(began/begun)
break(broke/broken)
catch(caught/caught)
do(did/done)
drink(drank/drunk)
find(found/found)
get[got/got](英)
[got/gotten](美)
go(went/gone)
is(was/been)
learn[learned/learned]
[learnt/learnt]
make(made/made)
put(put/put)
run(ran/run)
see(saw/seen)
sit(sat/sat)
speak(spoke/spoken)
swim(swam/swum)
teach(taught/taught)
think(thought/thought)
wear(wore/worn)
are(were/been)
become(became/become)
blow(blew/blown)
bring(brought/brought)
come(came/come)
draw(drew/drawn)
eat(ate/eaten).
fly(flew/flown)
give(gave/given)
have/has(had/had)
know(knew/known)
let(let/let).
meet(met/met)
ride(rode/ridden)
say(said/said)
sing(sang/sung)
sleep(slept/slept)
spell[spelt/spelt](英)
[spelled/spelled](美)
take(took/taken)
tell(told/told)
throw(threw/thrown)
write(wrote/written)