写出这些单词的过去式和过去分词，现在分词，谢谢。 原形 过去式 过去分词 现在分词make，made made makingfly，flew flown flyinglive，lived lived livingdrop dropped dropped droppingshave，shaved shaved shavingopen，opened opened openinglisten，listened listened listeningrun，ran run runningsit sat sat sittingread，read read readinggo went gone goingwalk walked walked walkingwait waited waited waitingwash washed washed washingswim swam swum swimming保证准确率~
用swim做例子，表明过去式和过去分词有什么区别 I I swam yesterday我昨天游泳（swam与swim意思一样，只是时态（一般过去时）的原因必须用swam）I have never swum before 这里 have+swum 这个整体做谓语，用在现在完成时。
swim的过去式和过去分词分别是什么 其实可以去一些在线字典查的.swim 过去式 swam/sw？m/过去分词 swum/sw？m/
