(1)在动词原形后加-n或-en构成过去分词。be was/ were been 是eat ate eaten 吃fall fell fallen 落下give gave given 给take took taken/ took [2] 拿hide hid hidden/ hid 隐藏see saw seen 看见write wrote written 写ride rode ridden 骑rise rose risen 升起drive drove driven 驾驶(2)过去式将-aw, -ow, -y变为-ew,过去分词在原形后加-n,其中“fly”的过去分词是将“y”改为“ow”再加“n”。blow blew blown 吹grow grew grown 生长know knew known 知道throw threw thrown 抛,扔draw drew drawn 拉,绘画fly flew flown 飞(3)过去式加-n或-en构成过去分词,其中“wear”的过去分词是将“e”改为“n”。wear wore worn 穿freeze froze frozen 冻结steal stole stolen 偷speak spoke spoken 说话tread trod trodden/ trod 行走break broke broken 破碎,折断choose chose chosen 选择weave wove/ weft woven/ weft 编织wake waked/ woke waked/ waken 醒get got gotten/ got得forget forgot forgotten/ forgot忘记(4)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)。begin began begun 开始drink drank drunk 饮ring rang/ ringed rung/ ringed 按铃sing sang/ sung sung 唱swim swam swum 游泳spin span/ spun spun 旋转sink sank/ sunk sunk/ sunken 沉spring sprang/ sprung sprung 跳跃(5)其他不规则动词的变化。do did done 做go went gone