1》 第一類不規(guī)則動詞的三種形式同形,如：
cost cost cost
cut cut cut
hurt hurt hurt
shut shut shut
set set set
注意,有些動詞的過去式與過去分詞有兩中形式,如：
bet bet / betted bet / betted
wed wed / wedded wed / wedded
wet wet / wetted wet / wetted
2》 第二類不規(guī)則動詞的過去式和過去分詞同形,如：
bend bent bent
bring brought brought
catch caught caught
hide hid hid / hidden
get got got/ gotten(AmE)
lead led led
3》 第三類不規(guī)則動詞的原形、過去式和過去分詞都不相同,如：
原形 過去式 過去分詞
begin began begun
break broke broken
forbid forbade forbidden
grow grew grown
ring rang rung
wake woke / waked woken / waked
此外還有少數(shù)不規(guī)則動詞的過去分詞與原形相同,如：
come came come
become became become
run ran run