//public class seaInhClass : seaClass { } // Use this for initialization void Start() { baseClass baseClassInstance = new baseClass(); derivedClass deriveClassInstacne = new derivedClass(); baseClassInstance.virMethod(); deriveClassInstacne.virMethod(); //没有override过的虚方法采用基类中的实现 baseClassInstance.virMethod2(); deriveClassInstacne.virMethod2(); }