blow [bl u] grow [ɡr u] know fly
blew [blu:] grew [ɡru:]
blown [bl n]
吹
grown [gr n] 生长 known
[n n] 知道
knew [nju:]
flew [flu:] flown [fl un]
飞
拉，绘画 展示
draw show
drew [dru:]
showed
drawn [dr :n]
shown [ n]
（2）过去式加-n或-en构成过去分词。 动词原形（现在式） 过去式
speak break wake
过去分词
说话
spoke [sp k] broke [br k]
spoken [sp k n] broken [br k n]
破碎，折断
醒
waked/ woke[w k] waked/ waken[we k n]
选择 忘记
choose [t u:z] chose ] [t uz] forget
forgot [f ɡ t]
chosen [t z n] forgotten [f ɡ tn]
（3）变单词在重读音节中的元音字母“i”分别为“a”（过去式）和“u”（过去分词）。 动词原形（现在式） 过去式
begin ring sing
过去分词 begun [b g n] rung [r ]
按铃
唱 沉
开始
began [biɡæn] rang [ræ ]
sang [sæ ] sank [sæ k]
sung [s ] sunk [s k]
sink [s k]