现在分词 ski () buy( ) shop()

现在分词 ski () buy( ) shop() 现在分词 ski buy shop ski的现在分词 谁知道ski的现在分词 ski的现在分词双写么?为什么? buy现在分词 buy的现在分词 buy现在分词是什么? 写出下列动词的现在分词 play run swim make go like write ski read have sing dance put see buy 写出下列动词的现在分词 play run swim make go like write ski read have sing dance put see buy ski的现在分词形式?拜托各位大神 buy的过去式,过去分词,现在分词 buy的现在分词是什么 改下列动词的现在分词play run swim make go like write ski read have sing dance put see buy love live take come get stop sit begin shop sit,buy,run的现在分词是? buy的过去式和现在分词是什么? buy 的现在分词是buying,为什么? run,ski ,eat,begin,use,plant的现在分词和过去时