go do work leave play的第三人称单数,现在分词,过去式,过去分词...答:所有动词的现在分词都是动词本身+ing 原形、三单、过去式、过去分词:go, goes, went, gone do, does, did, done <<不规则动词 leave, leaves, left, left sit, sits, sat, sat spend, spends, spent, spent <<也是不规则动词---过去式不规则 work, works, worked, worked play, pl...