如果單詞以元音字母（a,e,i,o,u）加 y 以外的其他輔音字母結(jié)尾的,一般要雙寫最后一個(gè)字母加ed,像stop,drop,要寫成stopped,dropped.
如果元音字母加y結(jié)尾的直接ed即可.像play,stay,要寫成played,stayed.
如果以輔間字母加y結(jié)尾的要把y改為i加ed,像study,cry要寫成studied,cried,以不發(fā)字母e結(jié)尾的,直接加d,像like要寫成liked.
我的理解是這樣,
當(dāng)然還有要死記的不規(guī)則動(dòng)詞：
英語不規(guī)則單詞的過去式和過去分詞
am\are\is was\were been
bear bore born
beat beat beaten
become became become
begin began begun
blow blew blown
break broke broken
bring brought brought
build built built
burn burnt burnt
buy bought bought
can could
catch caught caught
choose chose chosen
come came come
cost cost cost
cut cut cut
dig dug dug
do did done
draw drew drawn
drink drank drunk
drive drove driven
eat ate eaten
fall fell fallen
feed fed fed
feel felt felt
fight fought fought
find found found
fly flew flown
forget forgot forgetten
freeze froze frozen
get got got
give gave given
go went gone
grow grew grown
hang hung hung
have had had
hear heard heard
hide hid hidden
hit hit hit
hold held held
hurt hurt hurt
keep kept kept
kneel knelt knelt
know knew known
lay laid laid
lean leant leant
leave left left
let let let
lie lay lain
lose lost lost
make made made
may might
mean meant meant
meet meet met
melt melted melted
pay paid paid
put put put
read read read
ride rode ridden
ring rang rung
rise rose risen
run ran run
say said said
see saw seen
sell sold sold
send sent sent
sew sewed sewn
shake shook shaken
shine shone shone
show showed shown
shut shut shut
sing sang sung
sink sank sunk
sit sat sat
sleep slept slept
smell smelt smelt
speak spoke spoken
speed sped sped
spell spelt spelt
spend spent spent
spin spun spun
spread spread spread
spring sprang sprung
stand stood stood
steal stole stolen
stick stuck stuck
sweat sweated sweated
sweep swept swept
swim swam swum
swing swung swung
take took taken
teach taught taught
tell told told
think thought thought
throw threw thrown
understand understood understood
wake woke woken
wear wore worn
win won won
write wrote written