1．把動(dòng)詞原形中的i改為a,變成過去式.如：
begin—began,drink—drank,give—gave,ring—rang,sing—sang,sit—sat,swim—swam
2．把重讀開音節(jié)中的i改為o,變成過去式.如：
drive—drove,ride—rode,write—wrote
3．改動(dòng)詞原形中的aw ／ow為ew,變成過去式.如：
draw—drew,grow—grew,know—knew,throw—threw（動(dòng)詞show除外,show—showed）
4．動(dòng)詞原形中的e改為o,變成過去式.如：
get—got,forget—forgot
5．動(dòng)詞原形中的ee改為e,變成過去式.如：
feed—fed,meet—met
6．動(dòng)詞原形中的eep改為ept,變成過去式.如：
keep—kept,sleep—slept,sweep—swept
7．動(dòng)詞原形中的eak改為oke,變成過去式.如：
break—broke,speak—spoke
8．動(dòng)詞原形中的ell改為old,變成過去式.如：
sell—sold,tell—told
9．動(dòng)詞原形中的an改為oo,變成過去式.如：
stand—stood,understand—understood
10．以ought和aught結(jié)尾,且讀音是〔 :t〕的過去式.如：
bring—brought,buy— bought,think—thought,catch—caught,teach—taught
11．以ould結(jié)尾且讀音為〔ud〕的情態(tài)動(dòng)詞過去式.如：
can—could,shall—should,will—would
2．把動(dòng)詞原形中的o改為a,變成過去式.如：
come—came,become—became
13．在動(dòng)詞原形后加d或t變成過去式,并且發(fā)生音變.如：
hear〔hi 〕—heard〔h :d〕,say〔sei〕—said〔sed〕,mean〔mi:n〕—meant〔ment〕
14．動(dòng)詞的過去式與動(dòng)詞原形一樣.如：
let—let,must—must,put—put,read—read〔red〕
15．不符合上述規(guī)律的動(dòng)詞過去式.如：
am,is—was,are—were,build—built,do—did,eat—ate,fall—fell,feel—felt,find—found,fly—flew,go—went,have ／has— had,hold—held,leave—left,make—made,may—might,run—ran,see—saw,take—took動(dòng)詞的過去式