不规则动词
1．原形同过去式和过去分词相同的不规则动词
cost-cost-cost
cut-cut-cut
hit-hit-hit
hurt-hurt-hurt
let-let-let
put-put-put
read-read-read
2．原式同过去分词或过去式相同的不规则动词
become-became-become
come-came-come
run-ran-run
beat-beat-beaten
3．过去分词同过去式相同的不规则动词
bring-brought-brought
buy-bought-bought
fight-fought-fought
think-thought-thought
catch-caught-caught
teach-taught-taught
build-built-built
lend-lent-lent
send-sent-sent
spend-spent-spent
lose-lost-lost
smell-smelt-smelt（smell-smelled-smelled）
feel-felt-felt
keep-kept-kept
sleep-slept-slept
sweep-swept-swept
leave-left-left
meet-met-met
burn-burnt-burnt（burn-burned-burned）
learn-learnt-learnt（learn-learned-learned）
mean-meant-meant
sell-sold-sold
tell-told-told
hold-held-held
shine-shone-shone（shine-shined-shined）
win-won-won
get-got-got
stand-stood-stood
understand-understood-understood
dig-dug-dug
hang-hung-hung
have(has)-had-had
hear-heard-heard
make-made-made
pay-paid-paid
say-said-said
sit-sat-sat
find-found-found
4．原形、过去式和过去分词三者都不相同的不规则动词
be(am,is)-was-been
be(are)-were-been
do-did-done
go-went-gone
wear-wore-worn
lie-lay-lain（lie-lied-lied撒谎）
see-saw-seen
begin-began-begun
drink-drank-drunk
ring-rang-rung
sing-sang-sung
swim-swam-swum
drive-drove-driven
rise-rose-risen
ride-rode-ridden
write-wrote-written
blow-blew-blown
grow-grew-grown
know-knew-known
throw-threw-thrown
fly-flew-flown
draw-drew-drawn
show-showed-shown
break-broke-broken
speak-spoke-spoken
choose-chose-chosen
take-took-taken
mistake-mistook-mistaken
wake-woke-woken（wake-waked-waked）
eat-ate-eaten
fall-fell-fallen
give-gave-given
forget-forgot-forgotten
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