动词转为过去式有什么规律

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→cre