that's right ,that's OK,all right 区别

that's right = that's corret,即：是的,正确；that's OK 好的 （比如朋友问过会儿去做什么 你说去看电影 他说：That's ok）all right = OK,即：好的.（比如在问路时别人指路,你可以答all right）that's all right ...