关键字 base 的作用

　　　　 public class Father
        {
            public virtual void Show()
            {
                Console.WriteLine(" I am your father ");
            }
        }
        public class Child:Father
        {
            public override void Show()
            {
                base.Show();
                Console.WriteLine("I am your child");
            }
        }

       public class Father
        {
           public string Name { get; set; }
           public Father(string Name)
            {
                this.Name = Name;
            }
        }
        public class Child:Father
        {
            public Child():base("小明")
            {
                Console.WriteLine("输出基类的Name:{0}",Name);
            }
        }
        static void Main(string[] args)
        {
            Child child = new Child();
            Console.ReadKey();
        }