第1个回答 2020-01-02
以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加
-ed，
如:
stopped
begged
fretted
dragged
dropped
planned
dotted
以下动词加-ed或-ing要双写最后一个字母
1.
regret
(regretted,
regretting)
后悔
2.
control
(controlled,
controlling)
控制
3.
admit
(admitted,
admitting)
承认
4.
occur
(occurred,
occurring)
出现
5.
prefer
(preferred,
preferring)
宁愿
6.
refer
(referred,
referring)
提到
7.
forget
(forgetting
)
忘记
8.
permit
(permitted,
permitting)允许
9.
equip
(equipped,
equipping)
装备
注意:quarrel,
signal,
travel中的l可双写(英国英语)也可不双写(美国英语)
还有，beg,drip,dot,drop,fit,hug,plan,pat,rid,rob,rebet,stop,regret,stir,rub,travel,whip
关键是动词加ed后，单词主干发音不能改变
第3个回答 2020-02-25
keep---kept,
know---knew,
learn---learned,
let=---let,
lose----lost,
make----made.
may---might,
mean---meant,
meet----met,
pay----paid,
put----put,
read----read,
ride----rode,
run----ran,
say----said,
see----saw,
sell=-----sold,
shake----shook,
shine====----shone,
show----showed,
sing----sang,
sit---sat,
sleep-----splept,
smell----smelt,
speak---spoke,
spend---spent,
stand---stood,
sweep----swept,
swim----swam,
take----took,
teach---taught,
tell---told,
think---thought,
understand---understood,
wear---wore,
win---won,
write---wrote,
cook---cooked,
visit---visited,
live---lived,
travel---traveled,
play---played,
try---tried,
enjoy--enjoyed,
stop---stopped,
enter---entered,
want---wanted