read,ski,play,skand,stud,visit,want,fall,hit的分词形式是什么

read：现在分词reading 过去分词 read
ski: 现在分词skiing过去分词 skiied
play现在分词playing过去分词 played
skand?是stand吧 现在分词standing过去分词stood
stud?是study吧 现在分词studying 过去分词studied
visit现在分词visiting 过去分词visited
want 现在分词wanting过去分词wanted
fall现在分词falling 过去分词fell
hit 现在分词hitting 过去分词hit
累死我了~~祝你学习进步,以后有问题可以问我哦!呵呵