英语动词中，字母双写的情况：双写加ing,双写加ed，规则：在重读闭音节里，末尾只有一个辅音字母，辅音字母前只有一个元音字母时，要双写这个辅音字母。

辅－元－辅关于“双写的问题”，很简单地说：一个单词只需要看最后3个字母是由“辅元辅”构成，那么就需要“双写”，如果不是，那么就不用了。

(1)动词加ed/ing双写的有：
drop ，fit，travel ,trap,control,nod ,plan, permit, pat, prefer，refer , regret, rub, drop, hug,
commit, ,occur,equip,tap,jog,ban,beg,chat,shop, spot,step,star,skip, sum, stop , sob，slip，submit
(2)动词加ing要双写的有
begin --beginning cut ---- cutting
dig ---- digging get ---- getting
hit ---- hitting let ---- letting
put ---- putting run ---- running
set ---- setting shut ---- shutting
sit ---- sitting spit ---- spitting
split ---- splitting swim ---- swimming
win ---- winning forget-forgetting
去e加-ly
1.true-truly
2.gentle-gently
3.whole-wholly
4.terrible-terribly
5.simple-simply
6.considerable-considerably
7.possible-possibly
8.probable-probably
fortable-comfortably
10.i ncredible-incredibly
11.h orrible-horribly
12.s uitable-suitably
13.s ensible-sensibly
14.admirable-admirably
15.c apable-capably
❖。