1．无变化,过去式与原形相同.
let→let,put→put,hit→hit,must→must,set→set,beat→beat,cast→cast,cost→cost,cut→cut,hurt→hurt,read→red,shut→shut
(shed→shed split→split spread→spread burst→burst)
2．元音字母的变化.
i→a begin→began,drink→drank,ring→rang,sing→sang,swim→swam,give→gave,sit→sat,sink→sank
i→o drive→drove,ride→rode,shine→shone,write→wrote,rise→rose,win→won,(strive→strove arise→arose)
i→ou find→found (wind→wound,bind→bound,grind→ground)
a→oo take→took,shake→shook
e→o get→got,forget→forgot
o→a come→came,become→became
oo→o shoot→shot,choose→chose
3．元音字母组合的变化.
aw/ow/y→ew,draw→drew,blow→blew,grow→grew,know→knew,throw→threw,fly→flew
4．元音字母和辅音字母都有变化.
(1) sell→sold,tell→told,retell→retold
(2) say→said,pay→paid,lay→laid,relay→relaid
(3)sweep→swept,keep→kept,sleep→slept,creep→crept
(4)bring→brought,buy→bought,think→thought,fight→fought
(5)catch→caught,teach→taught
(6) can→could,will→would,shall→should
5．辅音字母变化.
（1）build→built,send→sent,bend→bent,lend→lent,rend→rent,spend→spent
（2）make→made,have→had,hear→heard
（3）mean→meant,learn→learnt