perform和performance的区别.为什么perform为动词

perform和performance的区别.为什么perform为动词 perform和performance的区别和用法 show和perform的区别 behave和perform区别 perform fulfill的区别 conduct与perform的区别 perform 与 conduct的区别 perform与play的用法区别 perform 与 behave用法的区别 perform play 区别是什么? act action actor perform 区别 perform和do有什么区别啊?主要是用法上的