1. A-A-A型（无变化的动词）
cut-cut-cut
let-let-let
hit-hit-hit
put-put-put
cost-cost-cost
hurt-hurt-hurt
read-read-read

2. A-A-B型（现在式和过去式同形）
beat-beat-beaten

3. A-B-A型（现在式和过去分词同形）
come-came-come
become-became-become
run-ran-run

4. A-B-B型（动词的过去式与过去分词相同）
（1）词尾的“d”变为“t”或词尾是“n”加“t”
build-built-built
lend-lent-lent
send-sent-sent
spend-spent-spent
burn-burnt/burned-burnt/burned
learn-learnt/learned-learnt/learned
mean-meant-meant
（2）把原形变为aught及ought的变化（如果原形有a则是aught，无a则是ought）
buy-bought-bought
bring-brought-brought
think-thought-thought
fight-fought-fought
catch-caught-caught
teach-taught-taught
（3）eep变ept或过去式、过去分词含有/e/音的动词
keep-kept-kept
sleep-slept-slept
sweep-swept-swept
leave-left-left
say-said-said
meet-met-met
spell-spelt-spelt
smell-smelt/smelled-smelt/smelled
hold-held-held
feel-felt-felt
（4）其他
dig-dug-dug
find-found-found
stand-stood-stood
understand-understood-understood
get-got-got
sit-sat-sat
spoil-spoilt-spoilt
have/has-had-had
sell-sold-sold
tell-told-told
hang-hanged/hung-hanged/hung
hear-heard-heard
make-made-made
pay-paid-paid
lay-laid-laid
lie（说谎）-lied-lied
lose-lost-lost
shine-shone/shined-shone/shined
win-won-won　shoot-shot-shot

5. A-B-C型（现在式、过去式和过去分词都不相同）
（1）in、im的变化（i-a-u型）
sing-sang-sung
ring-rang-rung
begin-began-begun
drink-drank-drunk
swim-swam-swum
sink-sank-sunk
（2）在动词原形后加－n或－en构成过去分词
①ow及aw的变化（过去式以ew结尾，过去分词以wn结尾）
draw-drew-drawn
know-knew-known
throw-threw-thrown
blow-blew-blown
grow-grew-grown
fly-flew-flown
②元音是i的开音节的变化（过去分词以en结尾）
drive-drove-driven
rise-rose-risen
ride-rode-ridden
write-wrote-written
give-gave-given
③其他
see-saw-seen
eat-ate-eaten
take-took-taken
fall-fell-fallen　
freeze-froze-frozen
show-showed-shown
break-broke-broken
speak-spoke-spoken
wake-woke-woken
choose-chose-chosen
forget-forgot-forgotten
lie（躺，放）-lay-lain
wear-wore-worn
be（am，is，are）-was/were-been
（3）其他
go-went-gone
do-did-done

6. 有过去式，没有过去分词的动词
can-could
may-might
must-must
shall-should
will-would